Cancer care in 2017: the promise of more cures with the challenges of an unstable health care system

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This past year will likely be remembered as one of breakthrough advances in reducing the burden of cancer, with some landmark “firsts” coming out of the US Food and Drug Administration (FDA). Among the notable approvals were the first CART [chimeric antigen receptor T-cell] immunotherapies – tisagenlecleucel (Kymriah) for B-cell precursor acute lymphoblastic leukemia, and axicabtagene ciloleucel (Yescarta) for relapsed or refractory large B-cell lymphoma; the first US-approved biosimilar for cancer, bevacizumab-awwb (Mvasi) for multiple types of cancer; and first-time approvals for neratinib (Nerlynx) as an extended adjuvant therapy for early-stage human epidermal growth factor receptor 2 (HER2)-overexpressed/amplified breast cancer, and avelumab (Bavencio) for the treatment of metastatic Merkel cell carcinoma. But our excitement about those advances will undoubtedly be tempered by the continued challenges in expanding access to better quality health care, piloting more effective payment models, and consolidating delivery systems.

Our excitement has also been tempered by the rapid rise in the cost of effective biologic, immunologic, and targeted therapies. With the approval of trastuzumab-dkst (Ogivri), the first targeted biosimilar for HER2-positive breast and gastrointestinal cancers, we can look forward to price decreases possibly in the 20%-30% range over time from a targeted therapy with remarkable clinical efficacy. We know that approved biosimilars have demonstrated clinical efficacy along with similar minor biologic diversity that is also seen in the reference biologic.1 We can also hope that increasing competition among biosimilar and reference compounds will lead to improvements in production methodologies that can allow further price reductions so that even more patients can gain access to these highly effective therapies.

In addition, the first FDA approval for the next-generation sequencing (NGS) FoundationOne profiling test and the rapid announcement by the Centers for Medicare & Medicaid Services (CMS) that it will cover the cost of that testing brings us a step closer to knowing which patients most likely will or won’t benefit from costly and toxic targeted therapies. Along with the many clinical trials studying which mutations predict which efficacies of individual or combinations of targeted agents, the approval and CMS coverage policy will help us improve value to our patients; when we can recommend the most beneficial therapies and avoid futile ones.

Finally, the approval for the DigniCap Scalp Cooling System for patients on chemotherapy for all solid tumors is of great importance. Pending coverage availability, it may influence some patients to get chemotherapy they might otherwise have forgone to avoid hair loss (see related article).



More consolidation: the best of all worlds?

In my 27 years in private practice, during which practice revenues grew with the favorable profit margins on novel therapies, forward-thinking physician leaders piloted innovations in oncology electronic medical records (EMRs), the delivery of team-based care, clinical research partnerships, and more comprehensive care services to better serve diverse communities, including those in rural areas. At my previous practice, that included adding clinicians to our group to serve patients at hospital clinics in 2 counties in southern California, each county with populations larger than 15 states. Our private practice worked with these public entities to bring state-of-the art care and private practice efficiencies to the uninsured and underserved in our region.

Unfortunately, revenues plummeted with changes in reimbursement after passage of the Medicare Modernization Act in 2003 and they continue to destabilize and reduce the number of community practices across the country. Many oncologists and oncology practices, including mine, chose to join larger academic or hospital systems or larger oncology networks at a time they are also facing growing pressures to contain costs, focus on out-patient care, complex clinical trials, and expanded access to care.

Although we may lament the shrinking landscape of private oncology practices, we can also be inspired by the physicians who have joined ranks with the better-funded, better-resourced, more traditional hospital and academic systems. These larger systems have more resources, more clincial trial offerings, staffing, technology, and analytics to expand value-based care initiatives to larger numbers of patients.

The hub-and-spoke models of oncology care with integrated networks linked by technology, and networked into larger analytic and decision support systems such as CancerLinQ, the health information technology program of the American Society of Clinical Oncology (ASCO),2 could facilitate documentable delivery of comprehensive, evidence-based care, moving us closer to meeting the Quadruple Aim of optimal health care: improving the patient experience of care (including quality and satisfaction); improving the health of populations; reducing the per capita cost of health care; and improving the work life of those who deliver care.3,4



Payment reform: working to align incentives

 

 

Everyone seems to agree that the fee-for-service payment models do not align incentives for improving total health outcomes at the lowest costs, but at the moment, there seems to be no best way of aligning them. Robinson has reported on the oncology payment initiatives at four major health insurance plans – Medicare (public) and Anthem, Aetna, and UnitedHealthcare (all private), noting that:5

  • Medicare is testing its Oncology Care Model at more than 200 sites in the United States, and early data are expected to be released in 2018.
  • Anthem continues with its Cancer Care Quality Program that includes adherence to 2 key requirements: that participants are compliant with Anthem-approved drug pathways, and that they register their patients at the insurer’s oncology website and enter their clinical data. Anthem is also considering expanding the management fee for certain high priority clinical trials.
  • Aetna’s Oncology Solutions takes a different approach by providing increased payments for generic chemotherapies.
  • United has eliminated the mark-up for new drugs and continues to mark up the prices of the older and generic therapies. Its episode-based pricing gives practices upfront payments based on expected drug margins so that practices can fund more comprehensive evidence-based care. In a presentation at a Washington State Medical Oncology Society meeting recently, United’s Lee Newcomer, reported that the insurer continues to see improved clinical and financial outcomes as well as encouraging early data showing that patients might do better in the real-world setting on some therapies that have not been fully compared in head-to-head randomized clinical trials.6,7

ASCO is pulling these ideas together at the national level with its Patient-Centered Oncology Payment (PCOP) model, which is similar to Medicare’s alternative payment model. The PCOP model focuses on high-value, quality care. Higher upfront payments would cover the additional diagnostic services, care planning, and management to improve compliance and adherence as well as clinical trial evaluations. The model was developed and vetted by the ASCO Clinical Practice Committee and practicing oncologists, and is supported by staff and consultants. It is currently in its second year of operation with a commercial payer and will be submitted for review to the Physician-Focused Payment Model Technical Advisory Committee of the Health and Human Services. The results of the review are expected in 2018. If the model is approved, it could provide a uniform approach for payers that would align incentives for high-quality cancer care and allow for better predictive modeling for practices, irrespective of size, to invest in infrastructure and staffing to meet the growing demand for high-quality, value-based cancer care.



Better science: the promise of more cures

The FDA approved a record number drugs and biologics in 2017 for various cancers,8 including the landmark approval of the first CART therapy for cancer, tisagenlecleucel, which targets CD19 on B cells in the treatment of acute leukemia. That approval was rapidly followed by a second anti-CD19 CART therapy, axicabtagene ciloluecel, for refractory, aggressive B-cell non-Hodgkin lymphoma.9,10 Although these therapies can achieve remarkable response and even complete response rates in otherwise refractory patients, only some achieve a long-term remission, and the costs are an order of magnitude above most other cancer therapies. That raises the question of what duration of benefit we should expect for treatments that cost in the range of $500,000 for the therapy alone, along with the additional costs for care, hospitalization, monitoring, expensive biologics (eg, tocilizumab, for the severe and potentially life-threatening cytokine-release syndrome associated with CART therapies), and significant neurologic and other therapy-related toxicities.

Novel arrangements between pharmaceutical companies and payers are currently being discussed so that only patients who meet specific response criteria would be charged for the therapy. In addition, we await findings from ongoing research to see if new approaches can find specific targetable sites on solid tumors that could spare the healthy organ tissues while eliminating highly resistant or heterogeneous populations of mutations in patients with advanced solid tumors. Such development of highly specific targets for CART therapies would improve their efficacy and safety, and with defined protocols in place to address toxicities and efforts to reduce the costs of the therapies, we can hopefully ensure broader access for patients to this potentially transformative therapeutic tool.

In addition to the excitement around the CART therapies, many of the years other new approvals will bring incremental but meaningful improvement in outcomes for patients with common cancers. The approval of neratinib, the first agent approved as extended adjuvant therapy for women with early-stage HER2/neu-positive breast cancer, is welcome, given the current 30% recurrence risk that extends past 10 years for women in that disease population who have completed standard adjuvant HER2-directed therapies. The 34% reduction in recurrence risk with a year of extended oral adjuvant therapy, as reported by Martin and colleagues,11 with benefits sustained out to 5 years and with controllable diarrhea as the major toxicity, are encouraging. This oral therapy may be especially beneficial for hormone-receptor–positive women in whom blocking the HER2/neu pathway may enhance cell signaling through the hormone pathways, which can be blocked with oral agents at the same time to provide significant reduction of recurrence risk.

 

 



Diagnostics

The concept of personalized medicine is based on identifying biomarkers that are predictive of a patient’s response to treatment. There has been much progress toward applying NGS of tumors for use in the clinic, but we are still awaiting evidence from randomized clinical trials that such approaches prolong overall or progression-free survival.12 Dr Julie Lange, an associate professor of clinical surgery and director of the Breast Cancer Program at the Keck School of Medicine at the University of Southern California, Los Angeles, provided me with the references to key studies in this field in which she is a leading researcher.13 However, she pointed out that in the absence of effective therapies, advanced biomarker testing may be less helpful, as is the case in heavily pretreated patients,14 unless a molecular test can pinpoint a potentially clinically actionable mutation. With the plethora of available assays and the high costs of molecular testing, clinicians are challenged in knowing what testing is best for which patients. Findings from a number of key ongoing national trials may eventually help us understand which tumor mutations in which tumor types can be most effectively targeted when multiple targetable mutations are found (TAPUR,15 MATCH,16 and QUILT17 and other basket trials18). The complexity of molecular testing has led to the development of institutional, trial-based, or co-operative group molecular tumor boards to provide guidance on specific targeted therapies for specific tumor mutations.

ASCO has launched a monthly series called Molecular Oncology Tumor Boards19 to expand the knowledge base in this field. It is presented as user-driven discussions designed to help providers integrate the use of the new genetic and genomic tests and their results into the day-to-day clinical care of patients with cancer.20



Liquid biopsies

As busy clinicians, we need to understand the differences in liquid biopsy tests and their correlation with actionable targets, especially given the rapid progress in this field. Again, Dr Lange offered clarity on those differences. Liquid biopsy, refers to using a blood draw to isolate circulating tumor cells (CTCs) or circulating tumor DNA (ctDNA) to assess tumor biomarkers.21 Both CTCs and ctDNA tests have been shown to be prognostic of worse survival.22-24 Liquid biopsies are currently supplemental to direct tumor biopsies, not replacements for them. The theoretical advantage of liquid biopsies is that they may reflect tumor heterogeneity by examining the repertoire of mutations contributed by diverse metastatic sites that shed CTCs or ctDNA into the circulation. The question is which type of testing can best inform therapy decisions.

Assays for ctDNA using droplet digital PCR [polymerase chain reaction], a digital PCR method based on water-oil emulsion droplet technology, require a priori knowledge of the specific mutation associated with response or lack of response to a specific therapy.25,26 Technical issues related to the detection of rare alleles present within a mixed population of leukocytes, and ctDNA remains a challenge for many ctDNA assays. However, there is evidence to suggest that whole-exome sequencing of ctDNA is concordant with mutations in metastases,27 however benchmarking ctDNA against tissue biopsies of metastases was not possible in all studies because tumor blocks were not available or because of the failure of tumor NGS assays. 28,29

Newer generations of CTC assays take advantage of the circulating tumor cell as a functional assay for mutational status, gene expression, proteomics, epigenetics, and/or chemosensitivity of cultured cells. The relationship between CTCs and ctDNA remains uncertain as to whether CTCs are the cell of origin for ctDNA or if ctDNA may reflect responding or resistant tumor populations. The use of NGS on tumor specimens, ctDNA, and CTCs as a discovery tool is advancing the field by improving the understanding of disease heterogeneity and potential treatment targets. These results require correlation with patterns of response to therapy, and ultimately require validation in randomized clinical trials to provide strong evidence justifying their use outside of clinical trials. We can look forward to a time in the not distant future when specific liquid biopsy assays will reflect the array of mutations in different metastatic sites with validation that they correlate with efficacy of targeting those mutations that have targetable therapies.



From the FDA

New approvals

  • Trastuzumab-dkst (Ogivri, Mylan; Dec 1) was approved as a biosimilar to trastuzumab (Herceptin, Genentech) for the treatment of patients with HER2-overexpressing breast or metastatic stomach cancer (gastric or gastroesophageal junction adenocarcinoma).
  • Sunitinib malate (Sutent, Pfizer; Nov 16) was approved for the adjuvant treatment of adult patients at high risk of recurrent renal cell carcinoma after nephrectomy.
  • Obinutuzumab (Gazyva, Genentech; Nov 16) received regular approval in combination with chemotherapy, followed by obinutuzumab monotherapy in patients achieving partial remission, for adult patients with previously untreated stage II bulky, III, or IV follicular lymphoma.
  • Emicizumab-kxwh (Hemlibra, Genentech; Nov 16) was approved for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adult and pediatric patients with hemophilia A with factor VIII inhibitors.
  • Dasatinib (Sprycel, Bristol-Myers Squibb; Nov 9) was approved for the treatment of pediatric patients with Philadelphia chromosome-positive chronic myeloid leukemia (CML) in the chronic phase.
  • Brentuximab vedotin (Adcetris, Seattle Genetics; Nov 9) for the treatment of previously treated adult patients with primary cutaneous anaplastic large cell lymphoma (pcALCL) or CD30-expressing mycosis fungoides.
  • Alectinib (Alecensa, Hoffmann-La Roche/Genentech; Nov 6) was approved for treatment of patients with anaplastic lymphoma kinase–positive metastatic non-small cell lung cancer (NSCLC), as detected by an FDA-approved test.
  • Vemurafenib (Zelboraf, Hoffmann-La Roche; Nov 6) received approval for the treatment of Acalabrutinib (Calquence, AstraZeneca/Acerta; Oct 31) was granted accelerated approval for treatment of adult patients with mantle cell lymphoma (MCL) who have received at least one previous therapy.
  • Axicabtagene ciloleucel (Yescarta, Kite; Oct 18), a CART therapy, was approved for treatment of adult patients with relapsed or refractory large B-cell lymphoma after two or more lines of systemic therapy, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified, primary mediastinal large B-cell lymphoma, high-grade B-cell lymphoma, and DLBCL arising from follicular lymphoma. The complete remission rate reviewed by the FDA for trial patients was 51%.30 It was the second CART therapy this year to receive approval (see tisagenlecleucel; Aug 30). The agency granted orphan drug designation and priority review to therapy for this indication.
  • Abemaciclib (Verzenio, Eli Lilly; Sep 28) was approved in combination with fulvestrant for women with hormone receptor-positive, HER2-negative advanced or metastatic breast cancer with disease progression following endocrine therapy.
  • Copanlisib (Aliqopa, Bayer; Sep 14) got accelerated approval for the treatment of adult patients with relapsed follicular lymphoma who have received at least two prior systemic therapies.
  • Bevacizumab-awwb (Mvasi, Amgen; Sep 14) was approved as a biosimilar to bevacizumab (Avastin, Genentech) for treating multiple types of cancer. It was the first biosimilar approved in the US for the treatment of cancer.
  • Gemtuzumab ozogamicin (Mylotarg, Pfizer; Sep 1) was approved for the treatment of newly diagnosed CD33-positive acute myeloid leukemia (AML) in adults and of relapsed/refractory CD33-positive AML in adults and pediatric patients aged 2 or older. It can be used in combination with daunorubicin and cytarabine for adults with newly diagnosed AML, or as a standalone treatment for certain adult and pediatric patients. The drug was originally approved in 2000 as a standalone treatment for CD33-positive AML in patients older than 60 years, but was withdrawn in 2010 because of safety concerns and postmarketing trials could not confirm benefit. The current approval is for a lower recommended dose and schedule.31
  • Tisagenlecleucel (Kymriah, Novartis; Aug 30) was approved for the treatment of patients up to age 25 years with B-cell precursor acute lymphoblastic leukemia (ALL) that is refractory or in second or later relapse. It is the first CART immunotherapy approved by the agency.
  • Inotuzumab ozogamicin (Besponsa, Wyeth; Aug 17) was approved for the treatment of adults with relapsed or refractory B-cell precursor ALL.
  • A liposome-encapsulated combination of daunorubicin and cytarabine (Vyxeos, Jazz; Aug 3) was approved for the treatment of adults with newly diagnosed therapy-related AML (t-AML) or AML with myelodysplasia-related changes (AML-MRC), two types of AML having a poor prognosis.
  • Enasidenib (Idhifa, Celgene; Aug 1) was approved for the treatment of adult patients with relapsed or refractory AML with an isocitrate dehydrogenase-2 mutation as detected by an FDA-approved test.
  • Neratinib (Nerlynx, Puma; Jul 17) was approved as the first extended adjuvant therapy for adult patients with early stage HER2-overexpressed/amplified breast cancer, to follow adjuvant trastuzumab-based therapy.
  • Blinatumomab (Blincyto, Amgen; Jul 11) was approved for the treatment of relapsed or refractory B-cell precursor acute lymphoblastic leukemia in adults and children.
  • L-glutamine oral powder (Endari, Emmaus; Jul 7) was approved for oral administration to reduce the acute complications of sickle cell disease in adult and pediatric patients 5 years and older.
  • Betrixaban (Bevyxxa, Portola; Jun 23) was approved for the prophylaxis of venous thromboembolism (VTE) in adult patients hospitalized for an acute medical illness who are at risk for thromboembolic complications because of moderate or severe restricted mobility and other risk factors for VTE.
  • The combination of rituximab and hyaluronidase human (Rituxan Hycela, Genentech; Jun 22) was approved for adult patients with follicular lymphoma, DLBCL, and chronic lymphocytic leukemia. Hyaluronidase human is an enzyme that helps deliver the rituximab. This formulation allows subcutaneous administration of the combination, which will shorten patient visit times and potentially even allow at-home therapy delivery.
  • Ceritinib (Zykadia, Novartis; May 26) was approved for patients with metastatic NSCLC whose tumors are anaplastic lymphoma kinase (ALK)-positive as detected by an FDA-approved test.
  • Avelumab (Bavencio, EMD Serono; May 9) got accelerated approval for patients with locally advanced or metastatic urothelial carcinoma whose disease progressed during or following platinum-containing chemotherapy or within 12 months of neoadjuvant or adjuvant platinum-containing chemotherapy.
  • Durvalumab (ImfinzI, AstraZeneca; May 1) got accelerated approval for the treatment of patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or who have disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy.
  • Brigatinib (Alunbrig tablets, Takeda through Ariad; Apr 28) got accelerated approval for the treatment of patients with metastatic anaplastic lymphoma kinase (ALK)-positive NSCLC who have progressed on or are intolerant to crizotinib.
  • Midostaurin (Rydapt, Novartis; Apr 28) was approved for the treatment of adult patients with newly diagnosed AML who are FLT3 mutation-positive, as detected by an FDA-approved test, in combination with standard cytarabine and daunorubicin induction and cytarabine consolidation.
  • Osimertinib (Tagrisso, AstraZeneca; Mar 30) got regular approval for the treatment of patients with metastatic epidermal growth factor receptor (EGFR) T790M mutation-positive NSCLC, as detected by an FDA-approved test, whose disease has progressed on or after EGFR tyrosine-kinase inhibitor therapy.
  • Niraparib (Zejula, Tesaro; Mar 27), a poly ADP-ribose polymerase (PARP) inhibitor, was approved for the maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer who are in complete or partial response to platinum-based chemotherapy.
  • Avelumab (Mar 23), a PD-L1–blocking human IgG1 lambda monoclonal antibody, got accelerated approval for the treatment of patients 12 years and older with metastatic Merkel cell carcinoma. It is the first FDA-approved product to treat this type of cancer.
  • Ribociclib (Kisqali, Novartis; Mar 13), a CDK4/6 inhibitor, was approved as a breakthrough therapy after priority review for use in combination with an aromatase inhibitor as initial endocrine-based therapy for the treatment of postmenopausal women with HR-positive, HER2-negative advanced or metastatic breast cancer.
 

 



Expanded/additional indications

  • Nivolumab (Opdivo, Bristol-Myers Squibb; Sep 22) got accelerated expanded indication approval for treatment of hepatocellular carcinoma (HCC) in patients previously treated with sorafenib.
  • Pembrolizumab (Keytruda, Merck; Sep 22) got accelerated expanded indication approval for recurrent locally advanced or metastatic gastric or gastroesophageal junction adenocarcinoma in patients whose tumors express PD-L1 as determined by an FDA-approved test.
  • DigniCap Scalp Cooling System (Dignitana Inc; Jul 3) was cleared for expanded use for reducing hair loss during chemotherapy for all solid tumors. Marketing authorization for the cooling cap had been granted in 2015 for patients with breast cancer.
  • Olaparib tablets (Lynparza, AstraZeneca; Aug 17) got approval for an expanded indication as maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer, who are in a complete or partial response to platinum-based chemotherapy.
  • Ibrutinib (Imbruvica, Pharmacyclics; Aug 2) got expanded indication approval for the treatment of adult patients with chronic graft-versus-host disease (cGVHD) after failure of one or more lines of systemic therapy. It was the first FDA-approved therapy for the treatment of cGVHD. (Ibrutinib was previously approved for chronic lymphocytic leukemia/small lymphocytic lymphoma, chronic lymphocytic leukemia/small lymphocytic lymphoma with 17p deletion, Waldenström’s macroglobulinemia, marginal zone lymphoma, and mantle cell lymphoma).
  • Nivolumab (Aug 2) got an accelerated expanded indication for the treatment of patients 12 years and older with mismatch repair deficient (dMMR) and microsatellite instability-high (MSI-H) metastatic colorectal cancer that has progressed after treatment with a fluoropyrimidine, oxaliplatin, and irinotecan.
  • Dabrafenib and trametinib (Tafinlar and Mekinist, Novartis; Jun 22) were approved for the expanded indication in combination for patients with metastatic NSCLC with BRAF V600E mutation as detected by an FDA-approved test. The combination demonstrated superior efficacy compared with dabrafenib alone (overall response rate: 61% and 27%, respectively).32
  • Pembrolizumab (May 23) got approved for expanded indication for adult and pediatric patients with unresectable or metastatic, MSI-H or dMMR solid tumors that have progressed after treatment and who have no satisfactory alternative treatment options or with MSI-H or dMMR colorectal cancer that has progressed after treatment with a fluoropyrimidine, oxaliplatin, and irinotecan.
  • Pembrolizumab (May 18) got approval for expanded indication for patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy.
  • Pembrolizumab (May 10) got accelerated expanded indication for use combination with pemetrexed and carboplatin for the treatment of patients with previously untreated metastatic NSCLC.
  • Regorafenib (Stivarga, Bayer; Apr 27) got an additional indication for the treatment of patients with HCC who have been previously treated with sorafenib.
  • Palbociclib (Ibrance, Pfizer; Mar 31) got an expanded indication that includes first-line therapy for the treatment of hormone receptor–positive, HER2-negative advanced or metastatic breast cancer in combination with an aromatase inhibitor as initial endocrine based therapy in postmenopausal women.
  • Pembrolizumab (Mar 15) got an accelerated additional indication approval for treatment of adult and pediatric patients with refractory classical Hodgkin lymphoma, or those who have relapsed after three or more previous lines of therapy.
  • Lenalidomide (Revlimid, Celgene; Feb 22) got an additional indication as maintenance therapy for patients with multiple myeloma following autologous stem cell transplant.
  • Nivolumab (Feb 2) got an accelerated expanded indication for treatment of patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or have disease progression within 12 months of neoadjuvant or adjuvant treatment with a platinum-containing chemotherapy.
 

 



Modified use

  • Cabazitaxel (Jevtana, Sanofi-Aventis; Sep 14) in combination with prednisone was approved at a lower dose of 20 mg/m2 every 3 weeks for the treatment of patients with metastatic castration-resistant prostate cancer previously treated with a docetaxel-containing treatment regimen. It had been approved at 25 mg/m2 every 3 weeks for this indication in 2010.



Tests/diagnostics

  • Marketing approval was given to the FoundationOne CDx (Foundation Medicine; Nov 30), an NGS-based in vitro diagnostic to detect genetic mutations in 324 genes and 2 genomic signatures in any solid tumor type.
  • Marketing approval was given to the Praxis Extended RAS Panel (Illumina; Jun 29), a next generation sequencing test to detect certain genetic mutations in RAS genes in tumor samples of patients with metastatic colorectal cancer. The test is used to aid in the identification of patients who may be eligible for treatment with panitumumab (Vectibix, Amgen).
  • Marketing was approved for ipsogen JAK2 RGQ PCR Kit (Qiagen ; Mar 27) to detect mutations affecting the Janus tyrosine kinase 2 gene. This is the first FDA-authorized test intended to help physicians in evaluating patients for suspected polycythemia vera.



Imaging and pathology aids

  • Aminolevulinic acid hydrochloride, known as ALA HCl (Gleolan, NX; Jun 6) was approved as an optical imaging agent indicated in patients with gliomas (suspected World Health Organization grades III or IV on preoperative imaging) as an adjunct for the visualization of malignant tissue during surgery.
  • Marketing was approved for the Philips IntelliSite Pathology Solution (PIPS, Philips Medical Systems Nederland; Apr 17), as an aid to the pathologist to review and interpret digital images of surgical pathology slides prepared from formalin-fixed paraffin embedded tissue.
     

Challenges and uncertainties

The current administration’s initiatives to reduce administrative burdens is underway with the Patients Over Paperwork initiative. Eliminating and streamlining regulations to increase efficiency and improve beneficiary experience could be helpful to both oncologists and patients. For now, the Medicare Access and CHIP Reauthorization Act (MACRA) program, allows you to “pick your pace” in the 2017 performance year and report on at least one measure to avoid a payment reduction penalty on your Medicare payments in 2019. In the final rule for 2018, the CMS finalized a proposal to apply the MIPS [Merit-based Incentive Payment System] adjustment to all Part B items and services, which will include Part B drugs. This would be unfair to oncologists who treat on the basis of evidence-based guidelines and pathways and have no control over the costs of the drugs they prescribe.

In addition, more requirements will be imposed in 2018 in a move toward full MACRA implementation. All four composite categories (Quality – 60% for 2017; Advancing Care Information (ACI, renamed from Meaningful Use) – 25% for 2017; Improvement Activities (IA) – 15% for 2017; and Cost – 0% for 2017, but weighted in the future) will be scored, including resource use (cost) at 10%. CMS will collect data to assess the total cost of care and the Medicare Spend per Beneficiary to assess use. Full program implementation, with cost being assessed at 30% of your score is expected in the 2019 performance year. ASCO’s clinical affairs and policy experts have studied the implications of Part B chemotherapy drugs being included in the cost component of the MIPS scoring and will continue advocating for policies that hold clinicians responsible only for the aspects of care they can control, such as providing high-quality care based on the patient’s disease, biomarkers, comorbidities, and preferences, and not the costs of the evidence-based therapies needed by patients.
 

Toward a better 2018 for ourselves and our patients

As an eternal optimist, I remain enthusiastic that despite the many challenges, we will find effective ways to bring standard as well as newer, cell-based and targeted therapies to our patients and cover the costs of highly effective therapies. I also remain hopeful that improving technological capabilities and payment reforms will be used by innovative clinical and administrative care teams to give clinicians more time to improve the care and health of patients while validating the methodologies so that real world data can help us further craft therapies to improve the health of each individual who needs our care. As we close this 15th year of our journal, we hope our presentations of practical science and implementation content has helped support your work while freeing some time for you to enjoy the journey. Our best wishes for a joyful holiday season celebrated with friends and family and the patients who entrust us to help them face and live beyond their cancer diagnoses.

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16. US National Library of Medicine. NCI-MATCH: Targeted therapy
directed by genetic testing in treating patients with advanced refractory
solid tumors, lymphomas, or multiple myeloma. https://clinicaltrials.
gov/ct2/show/NCT02465060. First posted June 8, 2015; last
updated November 9, 2017. Accessed November 10, 2017.
17. US National Library of Medicine. QUILT-3.039: NANT Pancreatic
cancer vaccine: combination immunotherapy in subjects with pancreatic
cancer who have progressed on or after standard-of-care therapy.
https://clinicaltrials.gov/ct2/show/NCT03136406. First posted May
2, 2017; last updated October 30, 2017. Accessed November 10,
2017.
18. Cunanan KM, Gonen M, Shen R, et al. Basket trials in oncology:
A trade-o™ between complexity and eŸciency. J Clin Oncol.
2017;35(3):271-273.
19. ASCO website. https://university.asco.org/motb. Last update
November 2017. Accessed November 10, 2017.
20. ASCO website. Molecular oncology tumor boards invite discussion
of growing eld in cancer care. http://www.ascopost.com/issues/
february-25-2015/molecular-oncology-tumor-boards-invite-discussion-
of-growing-eld-in-cancer-care/. Published February 25, 2017.
Accessed November 10, 2017.
21. de Lartigue J. Liquid gold: blood-based biopsies make headway.
JCSO 2017;15(1):49-54.
22. Cristofanilli M, Budd GT, Ellis MJ, et al. Circulating tumor cells,
disease progression, and survival in metastatic breast cancer. N Engl J
Med. 2004;351(8):781-791.
23. Lucci A, Hall CS, Lodhi AK, et al. Circulating tumour cells in
non-metastatic breast cancer: a prospective study. Lancet Oncol.
2012;13(7):688-695.
24. Dawson SJ, Tsui DW, Murtaza M, et al. Analysis of circulating
tumor DNA to monitor metastatic breast cancer. N Engl J Med.
2013;368(13):1199-1209.
25. Chandarlapaty S, Chen D, He W, et al. Prevalence of ESR1 mutations
in cell-free DNA and outcomes in metastatic breast cancer: a
secondary analysis of the BOLERO-2 clinical trial. JAMA Oncol.
2016;2(10):1310-1315.
26. Kim SB, Dent R, Wongchenko WJ, et al. Concordance between
plasma-based and tissue-based next-generation sequencing in
LOTUS [Correspondence]. http://www.thelancet.com/journals/
lanonc/article/PIIS1470-2045(17)30785-4/fulltext. Published
November 2017. Accessed December 3, 2017.
27. Adalsteinsson VA, Ha G, Freeman SS, et al. Scalable whole-exome
sequencing of cell-free DNA reveals high concordance with metastatic
tumors. https://www.nature.com/articles/s41467-017-00965-y.
Published online November 6, 2017. Accessed November 19, 2017.
28. Parsons DW, Roy A, Yang Y, et al. Clinical genomics for children
with solid tumors: current realities and future opportunities
[Abstract]. Clin Cancer Res. 2016;22(1 Suppl):abstract IA16.
29. ¬ompson JC, Yee SS, Troxel AB, et al. Detection of therapeutically
targetable driver and resistance mutations in lung cancer patients by
next-generation sequencing of cell-free circulating tumor DNA. Clin
Cancer Res. 2016;22(23):5772-5782.
30. Press release, FDA. FDA approves axicabtagene ciloleucel
for large B-cell lymphoma. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm581296.htm. Last
updated October 25, 2017. Accessed November 6, 2017.
31. Press release, FDA. FDA Approves gemtuzumab ozogamicin
for CD33-positive AML. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm574518.htm. Last
updated September 1, 2017. Accessed November 6, 2017.
32. Press release, FDA. FDA grants regular approval to dabrafenib and
trametinib combination for metastatic NSCLC with BRAF V600E
mutation. https://www.fda.gov/Drugs/InformationOnDrugs/
ApprovedDrugs/ucm564331.htm. Last updated June 22, 2017.
Accessed November 6, 2017.

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This past year will likely be remembered as one of breakthrough advances in reducing the burden of cancer, with some landmark “firsts” coming out of the US Food and Drug Administration (FDA). Among the notable approvals were the first CART [chimeric antigen receptor T-cell] immunotherapies – tisagenlecleucel (Kymriah) for B-cell precursor acute lymphoblastic leukemia, and axicabtagene ciloleucel (Yescarta) for relapsed or refractory large B-cell lymphoma; the first US-approved biosimilar for cancer, bevacizumab-awwb (Mvasi) for multiple types of cancer; and first-time approvals for neratinib (Nerlynx) as an extended adjuvant therapy for early-stage human epidermal growth factor receptor 2 (HER2)-overexpressed/amplified breast cancer, and avelumab (Bavencio) for the treatment of metastatic Merkel cell carcinoma. But our excitement about those advances will undoubtedly be tempered by the continued challenges in expanding access to better quality health care, piloting more effective payment models, and consolidating delivery systems.

Our excitement has also been tempered by the rapid rise in the cost of effective biologic, immunologic, and targeted therapies. With the approval of trastuzumab-dkst (Ogivri), the first targeted biosimilar for HER2-positive breast and gastrointestinal cancers, we can look forward to price decreases possibly in the 20%-30% range over time from a targeted therapy with remarkable clinical efficacy. We know that approved biosimilars have demonstrated clinical efficacy along with similar minor biologic diversity that is also seen in the reference biologic.1 We can also hope that increasing competition among biosimilar and reference compounds will lead to improvements in production methodologies that can allow further price reductions so that even more patients can gain access to these highly effective therapies.

In addition, the first FDA approval for the next-generation sequencing (NGS) FoundationOne profiling test and the rapid announcement by the Centers for Medicare & Medicaid Services (CMS) that it will cover the cost of that testing brings us a step closer to knowing which patients most likely will or won’t benefit from costly and toxic targeted therapies. Along with the many clinical trials studying which mutations predict which efficacies of individual or combinations of targeted agents, the approval and CMS coverage policy will help us improve value to our patients; when we can recommend the most beneficial therapies and avoid futile ones.

Finally, the approval for the DigniCap Scalp Cooling System for patients on chemotherapy for all solid tumors is of great importance. Pending coverage availability, it may influence some patients to get chemotherapy they might otherwise have forgone to avoid hair loss (see related article).



More consolidation: the best of all worlds?

In my 27 years in private practice, during which practice revenues grew with the favorable profit margins on novel therapies, forward-thinking physician leaders piloted innovations in oncology electronic medical records (EMRs), the delivery of team-based care, clinical research partnerships, and more comprehensive care services to better serve diverse communities, including those in rural areas. At my previous practice, that included adding clinicians to our group to serve patients at hospital clinics in 2 counties in southern California, each county with populations larger than 15 states. Our private practice worked with these public entities to bring state-of-the art care and private practice efficiencies to the uninsured and underserved in our region.

Unfortunately, revenues plummeted with changes in reimbursement after passage of the Medicare Modernization Act in 2003 and they continue to destabilize and reduce the number of community practices across the country. Many oncologists and oncology practices, including mine, chose to join larger academic or hospital systems or larger oncology networks at a time they are also facing growing pressures to contain costs, focus on out-patient care, complex clinical trials, and expanded access to care.

Although we may lament the shrinking landscape of private oncology practices, we can also be inspired by the physicians who have joined ranks with the better-funded, better-resourced, more traditional hospital and academic systems. These larger systems have more resources, more clincial trial offerings, staffing, technology, and analytics to expand value-based care initiatives to larger numbers of patients.

The hub-and-spoke models of oncology care with integrated networks linked by technology, and networked into larger analytic and decision support systems such as CancerLinQ, the health information technology program of the American Society of Clinical Oncology (ASCO),2 could facilitate documentable delivery of comprehensive, evidence-based care, moving us closer to meeting the Quadruple Aim of optimal health care: improving the patient experience of care (including quality and satisfaction); improving the health of populations; reducing the per capita cost of health care; and improving the work life of those who deliver care.3,4



Payment reform: working to align incentives

 

 

Everyone seems to agree that the fee-for-service payment models do not align incentives for improving total health outcomes at the lowest costs, but at the moment, there seems to be no best way of aligning them. Robinson has reported on the oncology payment initiatives at four major health insurance plans – Medicare (public) and Anthem, Aetna, and UnitedHealthcare (all private), noting that:5

  • Medicare is testing its Oncology Care Model at more than 200 sites in the United States, and early data are expected to be released in 2018.
  • Anthem continues with its Cancer Care Quality Program that includes adherence to 2 key requirements: that participants are compliant with Anthem-approved drug pathways, and that they register their patients at the insurer’s oncology website and enter their clinical data. Anthem is also considering expanding the management fee for certain high priority clinical trials.
  • Aetna’s Oncology Solutions takes a different approach by providing increased payments for generic chemotherapies.
  • United has eliminated the mark-up for new drugs and continues to mark up the prices of the older and generic therapies. Its episode-based pricing gives practices upfront payments based on expected drug margins so that practices can fund more comprehensive evidence-based care. In a presentation at a Washington State Medical Oncology Society meeting recently, United’s Lee Newcomer, reported that the insurer continues to see improved clinical and financial outcomes as well as encouraging early data showing that patients might do better in the real-world setting on some therapies that have not been fully compared in head-to-head randomized clinical trials.6,7

ASCO is pulling these ideas together at the national level with its Patient-Centered Oncology Payment (PCOP) model, which is similar to Medicare’s alternative payment model. The PCOP model focuses on high-value, quality care. Higher upfront payments would cover the additional diagnostic services, care planning, and management to improve compliance and adherence as well as clinical trial evaluations. The model was developed and vetted by the ASCO Clinical Practice Committee and practicing oncologists, and is supported by staff and consultants. It is currently in its second year of operation with a commercial payer and will be submitted for review to the Physician-Focused Payment Model Technical Advisory Committee of the Health and Human Services. The results of the review are expected in 2018. If the model is approved, it could provide a uniform approach for payers that would align incentives for high-quality cancer care and allow for better predictive modeling for practices, irrespective of size, to invest in infrastructure and staffing to meet the growing demand for high-quality, value-based cancer care.



Better science: the promise of more cures

The FDA approved a record number drugs and biologics in 2017 for various cancers,8 including the landmark approval of the first CART therapy for cancer, tisagenlecleucel, which targets CD19 on B cells in the treatment of acute leukemia. That approval was rapidly followed by a second anti-CD19 CART therapy, axicabtagene ciloluecel, for refractory, aggressive B-cell non-Hodgkin lymphoma.9,10 Although these therapies can achieve remarkable response and even complete response rates in otherwise refractory patients, only some achieve a long-term remission, and the costs are an order of magnitude above most other cancer therapies. That raises the question of what duration of benefit we should expect for treatments that cost in the range of $500,000 for the therapy alone, along with the additional costs for care, hospitalization, monitoring, expensive biologics (eg, tocilizumab, for the severe and potentially life-threatening cytokine-release syndrome associated with CART therapies), and significant neurologic and other therapy-related toxicities.

Novel arrangements between pharmaceutical companies and payers are currently being discussed so that only patients who meet specific response criteria would be charged for the therapy. In addition, we await findings from ongoing research to see if new approaches can find specific targetable sites on solid tumors that could spare the healthy organ tissues while eliminating highly resistant or heterogeneous populations of mutations in patients with advanced solid tumors. Such development of highly specific targets for CART therapies would improve their efficacy and safety, and with defined protocols in place to address toxicities and efforts to reduce the costs of the therapies, we can hopefully ensure broader access for patients to this potentially transformative therapeutic tool.

In addition to the excitement around the CART therapies, many of the years other new approvals will bring incremental but meaningful improvement in outcomes for patients with common cancers. The approval of neratinib, the first agent approved as extended adjuvant therapy for women with early-stage HER2/neu-positive breast cancer, is welcome, given the current 30% recurrence risk that extends past 10 years for women in that disease population who have completed standard adjuvant HER2-directed therapies. The 34% reduction in recurrence risk with a year of extended oral adjuvant therapy, as reported by Martin and colleagues,11 with benefits sustained out to 5 years and with controllable diarrhea as the major toxicity, are encouraging. This oral therapy may be especially beneficial for hormone-receptor–positive women in whom blocking the HER2/neu pathway may enhance cell signaling through the hormone pathways, which can be blocked with oral agents at the same time to provide significant reduction of recurrence risk.

 

 



Diagnostics

The concept of personalized medicine is based on identifying biomarkers that are predictive of a patient’s response to treatment. There has been much progress toward applying NGS of tumors for use in the clinic, but we are still awaiting evidence from randomized clinical trials that such approaches prolong overall or progression-free survival.12 Dr Julie Lange, an associate professor of clinical surgery and director of the Breast Cancer Program at the Keck School of Medicine at the University of Southern California, Los Angeles, provided me with the references to key studies in this field in which she is a leading researcher.13 However, she pointed out that in the absence of effective therapies, advanced biomarker testing may be less helpful, as is the case in heavily pretreated patients,14 unless a molecular test can pinpoint a potentially clinically actionable mutation. With the plethora of available assays and the high costs of molecular testing, clinicians are challenged in knowing what testing is best for which patients. Findings from a number of key ongoing national trials may eventually help us understand which tumor mutations in which tumor types can be most effectively targeted when multiple targetable mutations are found (TAPUR,15 MATCH,16 and QUILT17 and other basket trials18). The complexity of molecular testing has led to the development of institutional, trial-based, or co-operative group molecular tumor boards to provide guidance on specific targeted therapies for specific tumor mutations.

ASCO has launched a monthly series called Molecular Oncology Tumor Boards19 to expand the knowledge base in this field. It is presented as user-driven discussions designed to help providers integrate the use of the new genetic and genomic tests and their results into the day-to-day clinical care of patients with cancer.20



Liquid biopsies

As busy clinicians, we need to understand the differences in liquid biopsy tests and their correlation with actionable targets, especially given the rapid progress in this field. Again, Dr Lange offered clarity on those differences. Liquid biopsy, refers to using a blood draw to isolate circulating tumor cells (CTCs) or circulating tumor DNA (ctDNA) to assess tumor biomarkers.21 Both CTCs and ctDNA tests have been shown to be prognostic of worse survival.22-24 Liquid biopsies are currently supplemental to direct tumor biopsies, not replacements for them. The theoretical advantage of liquid biopsies is that they may reflect tumor heterogeneity by examining the repertoire of mutations contributed by diverse metastatic sites that shed CTCs or ctDNA into the circulation. The question is which type of testing can best inform therapy decisions.

Assays for ctDNA using droplet digital PCR [polymerase chain reaction], a digital PCR method based on water-oil emulsion droplet technology, require a priori knowledge of the specific mutation associated with response or lack of response to a specific therapy.25,26 Technical issues related to the detection of rare alleles present within a mixed population of leukocytes, and ctDNA remains a challenge for many ctDNA assays. However, there is evidence to suggest that whole-exome sequencing of ctDNA is concordant with mutations in metastases,27 however benchmarking ctDNA against tissue biopsies of metastases was not possible in all studies because tumor blocks were not available or because of the failure of tumor NGS assays. 28,29

Newer generations of CTC assays take advantage of the circulating tumor cell as a functional assay for mutational status, gene expression, proteomics, epigenetics, and/or chemosensitivity of cultured cells. The relationship between CTCs and ctDNA remains uncertain as to whether CTCs are the cell of origin for ctDNA or if ctDNA may reflect responding or resistant tumor populations. The use of NGS on tumor specimens, ctDNA, and CTCs as a discovery tool is advancing the field by improving the understanding of disease heterogeneity and potential treatment targets. These results require correlation with patterns of response to therapy, and ultimately require validation in randomized clinical trials to provide strong evidence justifying their use outside of clinical trials. We can look forward to a time in the not distant future when specific liquid biopsy assays will reflect the array of mutations in different metastatic sites with validation that they correlate with efficacy of targeting those mutations that have targetable therapies.



From the FDA

New approvals

  • Trastuzumab-dkst (Ogivri, Mylan; Dec 1) was approved as a biosimilar to trastuzumab (Herceptin, Genentech) for the treatment of patients with HER2-overexpressing breast or metastatic stomach cancer (gastric or gastroesophageal junction adenocarcinoma).
  • Sunitinib malate (Sutent, Pfizer; Nov 16) was approved for the adjuvant treatment of adult patients at high risk of recurrent renal cell carcinoma after nephrectomy.
  • Obinutuzumab (Gazyva, Genentech; Nov 16) received regular approval in combination with chemotherapy, followed by obinutuzumab monotherapy in patients achieving partial remission, for adult patients with previously untreated stage II bulky, III, or IV follicular lymphoma.
  • Emicizumab-kxwh (Hemlibra, Genentech; Nov 16) was approved for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adult and pediatric patients with hemophilia A with factor VIII inhibitors.
  • Dasatinib (Sprycel, Bristol-Myers Squibb; Nov 9) was approved for the treatment of pediatric patients with Philadelphia chromosome-positive chronic myeloid leukemia (CML) in the chronic phase.
  • Brentuximab vedotin (Adcetris, Seattle Genetics; Nov 9) for the treatment of previously treated adult patients with primary cutaneous anaplastic large cell lymphoma (pcALCL) or CD30-expressing mycosis fungoides.
  • Alectinib (Alecensa, Hoffmann-La Roche/Genentech; Nov 6) was approved for treatment of patients with anaplastic lymphoma kinase–positive metastatic non-small cell lung cancer (NSCLC), as detected by an FDA-approved test.
  • Vemurafenib (Zelboraf, Hoffmann-La Roche; Nov 6) received approval for the treatment of Acalabrutinib (Calquence, AstraZeneca/Acerta; Oct 31) was granted accelerated approval for treatment of adult patients with mantle cell lymphoma (MCL) who have received at least one previous therapy.
  • Axicabtagene ciloleucel (Yescarta, Kite; Oct 18), a CART therapy, was approved for treatment of adult patients with relapsed or refractory large B-cell lymphoma after two or more lines of systemic therapy, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified, primary mediastinal large B-cell lymphoma, high-grade B-cell lymphoma, and DLBCL arising from follicular lymphoma. The complete remission rate reviewed by the FDA for trial patients was 51%.30 It was the second CART therapy this year to receive approval (see tisagenlecleucel; Aug 30). The agency granted orphan drug designation and priority review to therapy for this indication.
  • Abemaciclib (Verzenio, Eli Lilly; Sep 28) was approved in combination with fulvestrant for women with hormone receptor-positive, HER2-negative advanced or metastatic breast cancer with disease progression following endocrine therapy.
  • Copanlisib (Aliqopa, Bayer; Sep 14) got accelerated approval for the treatment of adult patients with relapsed follicular lymphoma who have received at least two prior systemic therapies.
  • Bevacizumab-awwb (Mvasi, Amgen; Sep 14) was approved as a biosimilar to bevacizumab (Avastin, Genentech) for treating multiple types of cancer. It was the first biosimilar approved in the US for the treatment of cancer.
  • Gemtuzumab ozogamicin (Mylotarg, Pfizer; Sep 1) was approved for the treatment of newly diagnosed CD33-positive acute myeloid leukemia (AML) in adults and of relapsed/refractory CD33-positive AML in adults and pediatric patients aged 2 or older. It can be used in combination with daunorubicin and cytarabine for adults with newly diagnosed AML, or as a standalone treatment for certain adult and pediatric patients. The drug was originally approved in 2000 as a standalone treatment for CD33-positive AML in patients older than 60 years, but was withdrawn in 2010 because of safety concerns and postmarketing trials could not confirm benefit. The current approval is for a lower recommended dose and schedule.31
  • Tisagenlecleucel (Kymriah, Novartis; Aug 30) was approved for the treatment of patients up to age 25 years with B-cell precursor acute lymphoblastic leukemia (ALL) that is refractory or in second or later relapse. It is the first CART immunotherapy approved by the agency.
  • Inotuzumab ozogamicin (Besponsa, Wyeth; Aug 17) was approved for the treatment of adults with relapsed or refractory B-cell precursor ALL.
  • A liposome-encapsulated combination of daunorubicin and cytarabine (Vyxeos, Jazz; Aug 3) was approved for the treatment of adults with newly diagnosed therapy-related AML (t-AML) or AML with myelodysplasia-related changes (AML-MRC), two types of AML having a poor prognosis.
  • Enasidenib (Idhifa, Celgene; Aug 1) was approved for the treatment of adult patients with relapsed or refractory AML with an isocitrate dehydrogenase-2 mutation as detected by an FDA-approved test.
  • Neratinib (Nerlynx, Puma; Jul 17) was approved as the first extended adjuvant therapy for adult patients with early stage HER2-overexpressed/amplified breast cancer, to follow adjuvant trastuzumab-based therapy.
  • Blinatumomab (Blincyto, Amgen; Jul 11) was approved for the treatment of relapsed or refractory B-cell precursor acute lymphoblastic leukemia in adults and children.
  • L-glutamine oral powder (Endari, Emmaus; Jul 7) was approved for oral administration to reduce the acute complications of sickle cell disease in adult and pediatric patients 5 years and older.
  • Betrixaban (Bevyxxa, Portola; Jun 23) was approved for the prophylaxis of venous thromboembolism (VTE) in adult patients hospitalized for an acute medical illness who are at risk for thromboembolic complications because of moderate or severe restricted mobility and other risk factors for VTE.
  • The combination of rituximab and hyaluronidase human (Rituxan Hycela, Genentech; Jun 22) was approved for adult patients with follicular lymphoma, DLBCL, and chronic lymphocytic leukemia. Hyaluronidase human is an enzyme that helps deliver the rituximab. This formulation allows subcutaneous administration of the combination, which will shorten patient visit times and potentially even allow at-home therapy delivery.
  • Ceritinib (Zykadia, Novartis; May 26) was approved for patients with metastatic NSCLC whose tumors are anaplastic lymphoma kinase (ALK)-positive as detected by an FDA-approved test.
  • Avelumab (Bavencio, EMD Serono; May 9) got accelerated approval for patients with locally advanced or metastatic urothelial carcinoma whose disease progressed during or following platinum-containing chemotherapy or within 12 months of neoadjuvant or adjuvant platinum-containing chemotherapy.
  • Durvalumab (ImfinzI, AstraZeneca; May 1) got accelerated approval for the treatment of patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or who have disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy.
  • Brigatinib (Alunbrig tablets, Takeda through Ariad; Apr 28) got accelerated approval for the treatment of patients with metastatic anaplastic lymphoma kinase (ALK)-positive NSCLC who have progressed on or are intolerant to crizotinib.
  • Midostaurin (Rydapt, Novartis; Apr 28) was approved for the treatment of adult patients with newly diagnosed AML who are FLT3 mutation-positive, as detected by an FDA-approved test, in combination with standard cytarabine and daunorubicin induction and cytarabine consolidation.
  • Osimertinib (Tagrisso, AstraZeneca; Mar 30) got regular approval for the treatment of patients with metastatic epidermal growth factor receptor (EGFR) T790M mutation-positive NSCLC, as detected by an FDA-approved test, whose disease has progressed on or after EGFR tyrosine-kinase inhibitor therapy.
  • Niraparib (Zejula, Tesaro; Mar 27), a poly ADP-ribose polymerase (PARP) inhibitor, was approved for the maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer who are in complete or partial response to platinum-based chemotherapy.
  • Avelumab (Mar 23), a PD-L1–blocking human IgG1 lambda monoclonal antibody, got accelerated approval for the treatment of patients 12 years and older with metastatic Merkel cell carcinoma. It is the first FDA-approved product to treat this type of cancer.
  • Ribociclib (Kisqali, Novartis; Mar 13), a CDK4/6 inhibitor, was approved as a breakthrough therapy after priority review for use in combination with an aromatase inhibitor as initial endocrine-based therapy for the treatment of postmenopausal women with HR-positive, HER2-negative advanced or metastatic breast cancer.
 

 



Expanded/additional indications

  • Nivolumab (Opdivo, Bristol-Myers Squibb; Sep 22) got accelerated expanded indication approval for treatment of hepatocellular carcinoma (HCC) in patients previously treated with sorafenib.
  • Pembrolizumab (Keytruda, Merck; Sep 22) got accelerated expanded indication approval for recurrent locally advanced or metastatic gastric or gastroesophageal junction adenocarcinoma in patients whose tumors express PD-L1 as determined by an FDA-approved test.
  • DigniCap Scalp Cooling System (Dignitana Inc; Jul 3) was cleared for expanded use for reducing hair loss during chemotherapy for all solid tumors. Marketing authorization for the cooling cap had been granted in 2015 for patients with breast cancer.
  • Olaparib tablets (Lynparza, AstraZeneca; Aug 17) got approval for an expanded indication as maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer, who are in a complete or partial response to platinum-based chemotherapy.
  • Ibrutinib (Imbruvica, Pharmacyclics; Aug 2) got expanded indication approval for the treatment of adult patients with chronic graft-versus-host disease (cGVHD) after failure of one or more lines of systemic therapy. It was the first FDA-approved therapy for the treatment of cGVHD. (Ibrutinib was previously approved for chronic lymphocytic leukemia/small lymphocytic lymphoma, chronic lymphocytic leukemia/small lymphocytic lymphoma with 17p deletion, Waldenström’s macroglobulinemia, marginal zone lymphoma, and mantle cell lymphoma).
  • Nivolumab (Aug 2) got an accelerated expanded indication for the treatment of patients 12 years and older with mismatch repair deficient (dMMR) and microsatellite instability-high (MSI-H) metastatic colorectal cancer that has progressed after treatment with a fluoropyrimidine, oxaliplatin, and irinotecan.
  • Dabrafenib and trametinib (Tafinlar and Mekinist, Novartis; Jun 22) were approved for the expanded indication in combination for patients with metastatic NSCLC with BRAF V600E mutation as detected by an FDA-approved test. The combination demonstrated superior efficacy compared with dabrafenib alone (overall response rate: 61% and 27%, respectively).32
  • Pembrolizumab (May 23) got approved for expanded indication for adult and pediatric patients with unresectable or metastatic, MSI-H or dMMR solid tumors that have progressed after treatment and who have no satisfactory alternative treatment options or with MSI-H or dMMR colorectal cancer that has progressed after treatment with a fluoropyrimidine, oxaliplatin, and irinotecan.
  • Pembrolizumab (May 18) got approval for expanded indication for patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy.
  • Pembrolizumab (May 10) got accelerated expanded indication for use combination with pemetrexed and carboplatin for the treatment of patients with previously untreated metastatic NSCLC.
  • Regorafenib (Stivarga, Bayer; Apr 27) got an additional indication for the treatment of patients with HCC who have been previously treated with sorafenib.
  • Palbociclib (Ibrance, Pfizer; Mar 31) got an expanded indication that includes first-line therapy for the treatment of hormone receptor–positive, HER2-negative advanced or metastatic breast cancer in combination with an aromatase inhibitor as initial endocrine based therapy in postmenopausal women.
  • Pembrolizumab (Mar 15) got an accelerated additional indication approval for treatment of adult and pediatric patients with refractory classical Hodgkin lymphoma, or those who have relapsed after three or more previous lines of therapy.
  • Lenalidomide (Revlimid, Celgene; Feb 22) got an additional indication as maintenance therapy for patients with multiple myeloma following autologous stem cell transplant.
  • Nivolumab (Feb 2) got an accelerated expanded indication for treatment of patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or have disease progression within 12 months of neoadjuvant or adjuvant treatment with a platinum-containing chemotherapy.
 

 



Modified use

  • Cabazitaxel (Jevtana, Sanofi-Aventis; Sep 14) in combination with prednisone was approved at a lower dose of 20 mg/m2 every 3 weeks for the treatment of patients with metastatic castration-resistant prostate cancer previously treated with a docetaxel-containing treatment regimen. It had been approved at 25 mg/m2 every 3 weeks for this indication in 2010.



Tests/diagnostics

  • Marketing approval was given to the FoundationOne CDx (Foundation Medicine; Nov 30), an NGS-based in vitro diagnostic to detect genetic mutations in 324 genes and 2 genomic signatures in any solid tumor type.
  • Marketing approval was given to the Praxis Extended RAS Panel (Illumina; Jun 29), a next generation sequencing test to detect certain genetic mutations in RAS genes in tumor samples of patients with metastatic colorectal cancer. The test is used to aid in the identification of patients who may be eligible for treatment with panitumumab (Vectibix, Amgen).
  • Marketing was approved for ipsogen JAK2 RGQ PCR Kit (Qiagen ; Mar 27) to detect mutations affecting the Janus tyrosine kinase 2 gene. This is the first FDA-authorized test intended to help physicians in evaluating patients for suspected polycythemia vera.



Imaging and pathology aids

  • Aminolevulinic acid hydrochloride, known as ALA HCl (Gleolan, NX; Jun 6) was approved as an optical imaging agent indicated in patients with gliomas (suspected World Health Organization grades III or IV on preoperative imaging) as an adjunct for the visualization of malignant tissue during surgery.
  • Marketing was approved for the Philips IntelliSite Pathology Solution (PIPS, Philips Medical Systems Nederland; Apr 17), as an aid to the pathologist to review and interpret digital images of surgical pathology slides prepared from formalin-fixed paraffin embedded tissue.
     

Challenges and uncertainties

The current administration’s initiatives to reduce administrative burdens is underway with the Patients Over Paperwork initiative. Eliminating and streamlining regulations to increase efficiency and improve beneficiary experience could be helpful to both oncologists and patients. For now, the Medicare Access and CHIP Reauthorization Act (MACRA) program, allows you to “pick your pace” in the 2017 performance year and report on at least one measure to avoid a payment reduction penalty on your Medicare payments in 2019. In the final rule for 2018, the CMS finalized a proposal to apply the MIPS [Merit-based Incentive Payment System] adjustment to all Part B items and services, which will include Part B drugs. This would be unfair to oncologists who treat on the basis of evidence-based guidelines and pathways and have no control over the costs of the drugs they prescribe.

In addition, more requirements will be imposed in 2018 in a move toward full MACRA implementation. All four composite categories (Quality – 60% for 2017; Advancing Care Information (ACI, renamed from Meaningful Use) – 25% for 2017; Improvement Activities (IA) – 15% for 2017; and Cost – 0% for 2017, but weighted in the future) will be scored, including resource use (cost) at 10%. CMS will collect data to assess the total cost of care and the Medicare Spend per Beneficiary to assess use. Full program implementation, with cost being assessed at 30% of your score is expected in the 2019 performance year. ASCO’s clinical affairs and policy experts have studied the implications of Part B chemotherapy drugs being included in the cost component of the MIPS scoring and will continue advocating for policies that hold clinicians responsible only for the aspects of care they can control, such as providing high-quality care based on the patient’s disease, biomarkers, comorbidities, and preferences, and not the costs of the evidence-based therapies needed by patients.
 

Toward a better 2018 for ourselves and our patients

As an eternal optimist, I remain enthusiastic that despite the many challenges, we will find effective ways to bring standard as well as newer, cell-based and targeted therapies to our patients and cover the costs of highly effective therapies. I also remain hopeful that improving technological capabilities and payment reforms will be used by innovative clinical and administrative care teams to give clinicians more time to improve the care and health of patients while validating the methodologies so that real world data can help us further craft therapies to improve the health of each individual who needs our care. As we close this 15th year of our journal, we hope our presentations of practical science and implementation content has helped support your work while freeing some time for you to enjoy the journey. Our best wishes for a joyful holiday season celebrated with friends and family and the patients who entrust us to help them face and live beyond their cancer diagnoses.

This past year will likely be remembered as one of breakthrough advances in reducing the burden of cancer, with some landmark “firsts” coming out of the US Food and Drug Administration (FDA). Among the notable approvals were the first CART [chimeric antigen receptor T-cell] immunotherapies – tisagenlecleucel (Kymriah) for B-cell precursor acute lymphoblastic leukemia, and axicabtagene ciloleucel (Yescarta) for relapsed or refractory large B-cell lymphoma; the first US-approved biosimilar for cancer, bevacizumab-awwb (Mvasi) for multiple types of cancer; and first-time approvals for neratinib (Nerlynx) as an extended adjuvant therapy for early-stage human epidermal growth factor receptor 2 (HER2)-overexpressed/amplified breast cancer, and avelumab (Bavencio) for the treatment of metastatic Merkel cell carcinoma. But our excitement about those advances will undoubtedly be tempered by the continued challenges in expanding access to better quality health care, piloting more effective payment models, and consolidating delivery systems.

Our excitement has also been tempered by the rapid rise in the cost of effective biologic, immunologic, and targeted therapies. With the approval of trastuzumab-dkst (Ogivri), the first targeted biosimilar for HER2-positive breast and gastrointestinal cancers, we can look forward to price decreases possibly in the 20%-30% range over time from a targeted therapy with remarkable clinical efficacy. We know that approved biosimilars have demonstrated clinical efficacy along with similar minor biologic diversity that is also seen in the reference biologic.1 We can also hope that increasing competition among biosimilar and reference compounds will lead to improvements in production methodologies that can allow further price reductions so that even more patients can gain access to these highly effective therapies.

In addition, the first FDA approval for the next-generation sequencing (NGS) FoundationOne profiling test and the rapid announcement by the Centers for Medicare & Medicaid Services (CMS) that it will cover the cost of that testing brings us a step closer to knowing which patients most likely will or won’t benefit from costly and toxic targeted therapies. Along with the many clinical trials studying which mutations predict which efficacies of individual or combinations of targeted agents, the approval and CMS coverage policy will help us improve value to our patients; when we can recommend the most beneficial therapies and avoid futile ones.

Finally, the approval for the DigniCap Scalp Cooling System for patients on chemotherapy for all solid tumors is of great importance. Pending coverage availability, it may influence some patients to get chemotherapy they might otherwise have forgone to avoid hair loss (see related article).



More consolidation: the best of all worlds?

In my 27 years in private practice, during which practice revenues grew with the favorable profit margins on novel therapies, forward-thinking physician leaders piloted innovations in oncology electronic medical records (EMRs), the delivery of team-based care, clinical research partnerships, and more comprehensive care services to better serve diverse communities, including those in rural areas. At my previous practice, that included adding clinicians to our group to serve patients at hospital clinics in 2 counties in southern California, each county with populations larger than 15 states. Our private practice worked with these public entities to bring state-of-the art care and private practice efficiencies to the uninsured and underserved in our region.

Unfortunately, revenues plummeted with changes in reimbursement after passage of the Medicare Modernization Act in 2003 and they continue to destabilize and reduce the number of community practices across the country. Many oncologists and oncology practices, including mine, chose to join larger academic or hospital systems or larger oncology networks at a time they are also facing growing pressures to contain costs, focus on out-patient care, complex clinical trials, and expanded access to care.

Although we may lament the shrinking landscape of private oncology practices, we can also be inspired by the physicians who have joined ranks with the better-funded, better-resourced, more traditional hospital and academic systems. These larger systems have more resources, more clincial trial offerings, staffing, technology, and analytics to expand value-based care initiatives to larger numbers of patients.

The hub-and-spoke models of oncology care with integrated networks linked by technology, and networked into larger analytic and decision support systems such as CancerLinQ, the health information technology program of the American Society of Clinical Oncology (ASCO),2 could facilitate documentable delivery of comprehensive, evidence-based care, moving us closer to meeting the Quadruple Aim of optimal health care: improving the patient experience of care (including quality and satisfaction); improving the health of populations; reducing the per capita cost of health care; and improving the work life of those who deliver care.3,4



Payment reform: working to align incentives

 

 

Everyone seems to agree that the fee-for-service payment models do not align incentives for improving total health outcomes at the lowest costs, but at the moment, there seems to be no best way of aligning them. Robinson has reported on the oncology payment initiatives at four major health insurance plans – Medicare (public) and Anthem, Aetna, and UnitedHealthcare (all private), noting that:5

  • Medicare is testing its Oncology Care Model at more than 200 sites in the United States, and early data are expected to be released in 2018.
  • Anthem continues with its Cancer Care Quality Program that includes adherence to 2 key requirements: that participants are compliant with Anthem-approved drug pathways, and that they register their patients at the insurer’s oncology website and enter their clinical data. Anthem is also considering expanding the management fee for certain high priority clinical trials.
  • Aetna’s Oncology Solutions takes a different approach by providing increased payments for generic chemotherapies.
  • United has eliminated the mark-up for new drugs and continues to mark up the prices of the older and generic therapies. Its episode-based pricing gives practices upfront payments based on expected drug margins so that practices can fund more comprehensive evidence-based care. In a presentation at a Washington State Medical Oncology Society meeting recently, United’s Lee Newcomer, reported that the insurer continues to see improved clinical and financial outcomes as well as encouraging early data showing that patients might do better in the real-world setting on some therapies that have not been fully compared in head-to-head randomized clinical trials.6,7

ASCO is pulling these ideas together at the national level with its Patient-Centered Oncology Payment (PCOP) model, which is similar to Medicare’s alternative payment model. The PCOP model focuses on high-value, quality care. Higher upfront payments would cover the additional diagnostic services, care planning, and management to improve compliance and adherence as well as clinical trial evaluations. The model was developed and vetted by the ASCO Clinical Practice Committee and practicing oncologists, and is supported by staff and consultants. It is currently in its second year of operation with a commercial payer and will be submitted for review to the Physician-Focused Payment Model Technical Advisory Committee of the Health and Human Services. The results of the review are expected in 2018. If the model is approved, it could provide a uniform approach for payers that would align incentives for high-quality cancer care and allow for better predictive modeling for practices, irrespective of size, to invest in infrastructure and staffing to meet the growing demand for high-quality, value-based cancer care.



Better science: the promise of more cures

The FDA approved a record number drugs and biologics in 2017 for various cancers,8 including the landmark approval of the first CART therapy for cancer, tisagenlecleucel, which targets CD19 on B cells in the treatment of acute leukemia. That approval was rapidly followed by a second anti-CD19 CART therapy, axicabtagene ciloluecel, for refractory, aggressive B-cell non-Hodgkin lymphoma.9,10 Although these therapies can achieve remarkable response and even complete response rates in otherwise refractory patients, only some achieve a long-term remission, and the costs are an order of magnitude above most other cancer therapies. That raises the question of what duration of benefit we should expect for treatments that cost in the range of $500,000 for the therapy alone, along with the additional costs for care, hospitalization, monitoring, expensive biologics (eg, tocilizumab, for the severe and potentially life-threatening cytokine-release syndrome associated with CART therapies), and significant neurologic and other therapy-related toxicities.

Novel arrangements between pharmaceutical companies and payers are currently being discussed so that only patients who meet specific response criteria would be charged for the therapy. In addition, we await findings from ongoing research to see if new approaches can find specific targetable sites on solid tumors that could spare the healthy organ tissues while eliminating highly resistant or heterogeneous populations of mutations in patients with advanced solid tumors. Such development of highly specific targets for CART therapies would improve their efficacy and safety, and with defined protocols in place to address toxicities and efforts to reduce the costs of the therapies, we can hopefully ensure broader access for patients to this potentially transformative therapeutic tool.

In addition to the excitement around the CART therapies, many of the years other new approvals will bring incremental but meaningful improvement in outcomes for patients with common cancers. The approval of neratinib, the first agent approved as extended adjuvant therapy for women with early-stage HER2/neu-positive breast cancer, is welcome, given the current 30% recurrence risk that extends past 10 years for women in that disease population who have completed standard adjuvant HER2-directed therapies. The 34% reduction in recurrence risk with a year of extended oral adjuvant therapy, as reported by Martin and colleagues,11 with benefits sustained out to 5 years and with controllable diarrhea as the major toxicity, are encouraging. This oral therapy may be especially beneficial for hormone-receptor–positive women in whom blocking the HER2/neu pathway may enhance cell signaling through the hormone pathways, which can be blocked with oral agents at the same time to provide significant reduction of recurrence risk.

 

 



Diagnostics

The concept of personalized medicine is based on identifying biomarkers that are predictive of a patient’s response to treatment. There has been much progress toward applying NGS of tumors for use in the clinic, but we are still awaiting evidence from randomized clinical trials that such approaches prolong overall or progression-free survival.12 Dr Julie Lange, an associate professor of clinical surgery and director of the Breast Cancer Program at the Keck School of Medicine at the University of Southern California, Los Angeles, provided me with the references to key studies in this field in which she is a leading researcher.13 However, she pointed out that in the absence of effective therapies, advanced biomarker testing may be less helpful, as is the case in heavily pretreated patients,14 unless a molecular test can pinpoint a potentially clinically actionable mutation. With the plethora of available assays and the high costs of molecular testing, clinicians are challenged in knowing what testing is best for which patients. Findings from a number of key ongoing national trials may eventually help us understand which tumor mutations in which tumor types can be most effectively targeted when multiple targetable mutations are found (TAPUR,15 MATCH,16 and QUILT17 and other basket trials18). The complexity of molecular testing has led to the development of institutional, trial-based, or co-operative group molecular tumor boards to provide guidance on specific targeted therapies for specific tumor mutations.

ASCO has launched a monthly series called Molecular Oncology Tumor Boards19 to expand the knowledge base in this field. It is presented as user-driven discussions designed to help providers integrate the use of the new genetic and genomic tests and their results into the day-to-day clinical care of patients with cancer.20



Liquid biopsies

As busy clinicians, we need to understand the differences in liquid biopsy tests and their correlation with actionable targets, especially given the rapid progress in this field. Again, Dr Lange offered clarity on those differences. Liquid biopsy, refers to using a blood draw to isolate circulating tumor cells (CTCs) or circulating tumor DNA (ctDNA) to assess tumor biomarkers.21 Both CTCs and ctDNA tests have been shown to be prognostic of worse survival.22-24 Liquid biopsies are currently supplemental to direct tumor biopsies, not replacements for them. The theoretical advantage of liquid biopsies is that they may reflect tumor heterogeneity by examining the repertoire of mutations contributed by diverse metastatic sites that shed CTCs or ctDNA into the circulation. The question is which type of testing can best inform therapy decisions.

Assays for ctDNA using droplet digital PCR [polymerase chain reaction], a digital PCR method based on water-oil emulsion droplet technology, require a priori knowledge of the specific mutation associated with response or lack of response to a specific therapy.25,26 Technical issues related to the detection of rare alleles present within a mixed population of leukocytes, and ctDNA remains a challenge for many ctDNA assays. However, there is evidence to suggest that whole-exome sequencing of ctDNA is concordant with mutations in metastases,27 however benchmarking ctDNA against tissue biopsies of metastases was not possible in all studies because tumor blocks were not available or because of the failure of tumor NGS assays. 28,29

Newer generations of CTC assays take advantage of the circulating tumor cell as a functional assay for mutational status, gene expression, proteomics, epigenetics, and/or chemosensitivity of cultured cells. The relationship between CTCs and ctDNA remains uncertain as to whether CTCs are the cell of origin for ctDNA or if ctDNA may reflect responding or resistant tumor populations. The use of NGS on tumor specimens, ctDNA, and CTCs as a discovery tool is advancing the field by improving the understanding of disease heterogeneity and potential treatment targets. These results require correlation with patterns of response to therapy, and ultimately require validation in randomized clinical trials to provide strong evidence justifying their use outside of clinical trials. We can look forward to a time in the not distant future when specific liquid biopsy assays will reflect the array of mutations in different metastatic sites with validation that they correlate with efficacy of targeting those mutations that have targetable therapies.



From the FDA

New approvals

  • Trastuzumab-dkst (Ogivri, Mylan; Dec 1) was approved as a biosimilar to trastuzumab (Herceptin, Genentech) for the treatment of patients with HER2-overexpressing breast or metastatic stomach cancer (gastric or gastroesophageal junction adenocarcinoma).
  • Sunitinib malate (Sutent, Pfizer; Nov 16) was approved for the adjuvant treatment of adult patients at high risk of recurrent renal cell carcinoma after nephrectomy.
  • Obinutuzumab (Gazyva, Genentech; Nov 16) received regular approval in combination with chemotherapy, followed by obinutuzumab monotherapy in patients achieving partial remission, for adult patients with previously untreated stage II bulky, III, or IV follicular lymphoma.
  • Emicizumab-kxwh (Hemlibra, Genentech; Nov 16) was approved for routine prophylaxis to prevent or reduce the frequency of bleeding episodes in adult and pediatric patients with hemophilia A with factor VIII inhibitors.
  • Dasatinib (Sprycel, Bristol-Myers Squibb; Nov 9) was approved for the treatment of pediatric patients with Philadelphia chromosome-positive chronic myeloid leukemia (CML) in the chronic phase.
  • Brentuximab vedotin (Adcetris, Seattle Genetics; Nov 9) for the treatment of previously treated adult patients with primary cutaneous anaplastic large cell lymphoma (pcALCL) or CD30-expressing mycosis fungoides.
  • Alectinib (Alecensa, Hoffmann-La Roche/Genentech; Nov 6) was approved for treatment of patients with anaplastic lymphoma kinase–positive metastatic non-small cell lung cancer (NSCLC), as detected by an FDA-approved test.
  • Vemurafenib (Zelboraf, Hoffmann-La Roche; Nov 6) received approval for the treatment of Acalabrutinib (Calquence, AstraZeneca/Acerta; Oct 31) was granted accelerated approval for treatment of adult patients with mantle cell lymphoma (MCL) who have received at least one previous therapy.
  • Axicabtagene ciloleucel (Yescarta, Kite; Oct 18), a CART therapy, was approved for treatment of adult patients with relapsed or refractory large B-cell lymphoma after two or more lines of systemic therapy, including diffuse large B-cell lymphoma (DLBCL) not otherwise specified, primary mediastinal large B-cell lymphoma, high-grade B-cell lymphoma, and DLBCL arising from follicular lymphoma. The complete remission rate reviewed by the FDA for trial patients was 51%.30 It was the second CART therapy this year to receive approval (see tisagenlecleucel; Aug 30). The agency granted orphan drug designation and priority review to therapy for this indication.
  • Abemaciclib (Verzenio, Eli Lilly; Sep 28) was approved in combination with fulvestrant for women with hormone receptor-positive, HER2-negative advanced or metastatic breast cancer with disease progression following endocrine therapy.
  • Copanlisib (Aliqopa, Bayer; Sep 14) got accelerated approval for the treatment of adult patients with relapsed follicular lymphoma who have received at least two prior systemic therapies.
  • Bevacizumab-awwb (Mvasi, Amgen; Sep 14) was approved as a biosimilar to bevacizumab (Avastin, Genentech) for treating multiple types of cancer. It was the first biosimilar approved in the US for the treatment of cancer.
  • Gemtuzumab ozogamicin (Mylotarg, Pfizer; Sep 1) was approved for the treatment of newly diagnosed CD33-positive acute myeloid leukemia (AML) in adults and of relapsed/refractory CD33-positive AML in adults and pediatric patients aged 2 or older. It can be used in combination with daunorubicin and cytarabine for adults with newly diagnosed AML, or as a standalone treatment for certain adult and pediatric patients. The drug was originally approved in 2000 as a standalone treatment for CD33-positive AML in patients older than 60 years, but was withdrawn in 2010 because of safety concerns and postmarketing trials could not confirm benefit. The current approval is for a lower recommended dose and schedule.31
  • Tisagenlecleucel (Kymriah, Novartis; Aug 30) was approved for the treatment of patients up to age 25 years with B-cell precursor acute lymphoblastic leukemia (ALL) that is refractory or in second or later relapse. It is the first CART immunotherapy approved by the agency.
  • Inotuzumab ozogamicin (Besponsa, Wyeth; Aug 17) was approved for the treatment of adults with relapsed or refractory B-cell precursor ALL.
  • A liposome-encapsulated combination of daunorubicin and cytarabine (Vyxeos, Jazz; Aug 3) was approved for the treatment of adults with newly diagnosed therapy-related AML (t-AML) or AML with myelodysplasia-related changes (AML-MRC), two types of AML having a poor prognosis.
  • Enasidenib (Idhifa, Celgene; Aug 1) was approved for the treatment of adult patients with relapsed or refractory AML with an isocitrate dehydrogenase-2 mutation as detected by an FDA-approved test.
  • Neratinib (Nerlynx, Puma; Jul 17) was approved as the first extended adjuvant therapy for adult patients with early stage HER2-overexpressed/amplified breast cancer, to follow adjuvant trastuzumab-based therapy.
  • Blinatumomab (Blincyto, Amgen; Jul 11) was approved for the treatment of relapsed or refractory B-cell precursor acute lymphoblastic leukemia in adults and children.
  • L-glutamine oral powder (Endari, Emmaus; Jul 7) was approved for oral administration to reduce the acute complications of sickle cell disease in adult and pediatric patients 5 years and older.
  • Betrixaban (Bevyxxa, Portola; Jun 23) was approved for the prophylaxis of venous thromboembolism (VTE) in adult patients hospitalized for an acute medical illness who are at risk for thromboembolic complications because of moderate or severe restricted mobility and other risk factors for VTE.
  • The combination of rituximab and hyaluronidase human (Rituxan Hycela, Genentech; Jun 22) was approved for adult patients with follicular lymphoma, DLBCL, and chronic lymphocytic leukemia. Hyaluronidase human is an enzyme that helps deliver the rituximab. This formulation allows subcutaneous administration of the combination, which will shorten patient visit times and potentially even allow at-home therapy delivery.
  • Ceritinib (Zykadia, Novartis; May 26) was approved for patients with metastatic NSCLC whose tumors are anaplastic lymphoma kinase (ALK)-positive as detected by an FDA-approved test.
  • Avelumab (Bavencio, EMD Serono; May 9) got accelerated approval for patients with locally advanced or metastatic urothelial carcinoma whose disease progressed during or following platinum-containing chemotherapy or within 12 months of neoadjuvant or adjuvant platinum-containing chemotherapy.
  • Durvalumab (ImfinzI, AstraZeneca; May 1) got accelerated approval for the treatment of patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or who have disease progression within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy.
  • Brigatinib (Alunbrig tablets, Takeda through Ariad; Apr 28) got accelerated approval for the treatment of patients with metastatic anaplastic lymphoma kinase (ALK)-positive NSCLC who have progressed on or are intolerant to crizotinib.
  • Midostaurin (Rydapt, Novartis; Apr 28) was approved for the treatment of adult patients with newly diagnosed AML who are FLT3 mutation-positive, as detected by an FDA-approved test, in combination with standard cytarabine and daunorubicin induction and cytarabine consolidation.
  • Osimertinib (Tagrisso, AstraZeneca; Mar 30) got regular approval for the treatment of patients with metastatic epidermal growth factor receptor (EGFR) T790M mutation-positive NSCLC, as detected by an FDA-approved test, whose disease has progressed on or after EGFR tyrosine-kinase inhibitor therapy.
  • Niraparib (Zejula, Tesaro; Mar 27), a poly ADP-ribose polymerase (PARP) inhibitor, was approved for the maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer who are in complete or partial response to platinum-based chemotherapy.
  • Avelumab (Mar 23), a PD-L1–blocking human IgG1 lambda monoclonal antibody, got accelerated approval for the treatment of patients 12 years and older with metastatic Merkel cell carcinoma. It is the first FDA-approved product to treat this type of cancer.
  • Ribociclib (Kisqali, Novartis; Mar 13), a CDK4/6 inhibitor, was approved as a breakthrough therapy after priority review for use in combination with an aromatase inhibitor as initial endocrine-based therapy for the treatment of postmenopausal women with HR-positive, HER2-negative advanced or metastatic breast cancer.
 

 



Expanded/additional indications

  • Nivolumab (Opdivo, Bristol-Myers Squibb; Sep 22) got accelerated expanded indication approval for treatment of hepatocellular carcinoma (HCC) in patients previously treated with sorafenib.
  • Pembrolizumab (Keytruda, Merck; Sep 22) got accelerated expanded indication approval for recurrent locally advanced or metastatic gastric or gastroesophageal junction adenocarcinoma in patients whose tumors express PD-L1 as determined by an FDA-approved test.
  • DigniCap Scalp Cooling System (Dignitana Inc; Jul 3) was cleared for expanded use for reducing hair loss during chemotherapy for all solid tumors. Marketing authorization for the cooling cap had been granted in 2015 for patients with breast cancer.
  • Olaparib tablets (Lynparza, AstraZeneca; Aug 17) got approval for an expanded indication as maintenance treatment of adult patients with recurrent epithelial ovarian, fallopian tube, or primary peritoneal cancer, who are in a complete or partial response to platinum-based chemotherapy.
  • Ibrutinib (Imbruvica, Pharmacyclics; Aug 2) got expanded indication approval for the treatment of adult patients with chronic graft-versus-host disease (cGVHD) after failure of one or more lines of systemic therapy. It was the first FDA-approved therapy for the treatment of cGVHD. (Ibrutinib was previously approved for chronic lymphocytic leukemia/small lymphocytic lymphoma, chronic lymphocytic leukemia/small lymphocytic lymphoma with 17p deletion, Waldenström’s macroglobulinemia, marginal zone lymphoma, and mantle cell lymphoma).
  • Nivolumab (Aug 2) got an accelerated expanded indication for the treatment of patients 12 years and older with mismatch repair deficient (dMMR) and microsatellite instability-high (MSI-H) metastatic colorectal cancer that has progressed after treatment with a fluoropyrimidine, oxaliplatin, and irinotecan.
  • Dabrafenib and trametinib (Tafinlar and Mekinist, Novartis; Jun 22) were approved for the expanded indication in combination for patients with metastatic NSCLC with BRAF V600E mutation as detected by an FDA-approved test. The combination demonstrated superior efficacy compared with dabrafenib alone (overall response rate: 61% and 27%, respectively).32
  • Pembrolizumab (May 23) got approved for expanded indication for adult and pediatric patients with unresectable or metastatic, MSI-H or dMMR solid tumors that have progressed after treatment and who have no satisfactory alternative treatment options or with MSI-H or dMMR colorectal cancer that has progressed after treatment with a fluoropyrimidine, oxaliplatin, and irinotecan.
  • Pembrolizumab (May 18) got approval for expanded indication for patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or within 12 months of neoadjuvant or adjuvant treatment with platinum-containing chemotherapy.
  • Pembrolizumab (May 10) got accelerated expanded indication for use combination with pemetrexed and carboplatin for the treatment of patients with previously untreated metastatic NSCLC.
  • Regorafenib (Stivarga, Bayer; Apr 27) got an additional indication for the treatment of patients with HCC who have been previously treated with sorafenib.
  • Palbociclib (Ibrance, Pfizer; Mar 31) got an expanded indication that includes first-line therapy for the treatment of hormone receptor–positive, HER2-negative advanced or metastatic breast cancer in combination with an aromatase inhibitor as initial endocrine based therapy in postmenopausal women.
  • Pembrolizumab (Mar 15) got an accelerated additional indication approval for treatment of adult and pediatric patients with refractory classical Hodgkin lymphoma, or those who have relapsed after three or more previous lines of therapy.
  • Lenalidomide (Revlimid, Celgene; Feb 22) got an additional indication as maintenance therapy for patients with multiple myeloma following autologous stem cell transplant.
  • Nivolumab (Feb 2) got an accelerated expanded indication for treatment of patients with locally advanced or metastatic urothelial carcinoma who have disease progression during or following platinum-containing chemotherapy or have disease progression within 12 months of neoadjuvant or adjuvant treatment with a platinum-containing chemotherapy.
 

 



Modified use

  • Cabazitaxel (Jevtana, Sanofi-Aventis; Sep 14) in combination with prednisone was approved at a lower dose of 20 mg/m2 every 3 weeks for the treatment of patients with metastatic castration-resistant prostate cancer previously treated with a docetaxel-containing treatment regimen. It had been approved at 25 mg/m2 every 3 weeks for this indication in 2010.



Tests/diagnostics

  • Marketing approval was given to the FoundationOne CDx (Foundation Medicine; Nov 30), an NGS-based in vitro diagnostic to detect genetic mutations in 324 genes and 2 genomic signatures in any solid tumor type.
  • Marketing approval was given to the Praxis Extended RAS Panel (Illumina; Jun 29), a next generation sequencing test to detect certain genetic mutations in RAS genes in tumor samples of patients with metastatic colorectal cancer. The test is used to aid in the identification of patients who may be eligible for treatment with panitumumab (Vectibix, Amgen).
  • Marketing was approved for ipsogen JAK2 RGQ PCR Kit (Qiagen ; Mar 27) to detect mutations affecting the Janus tyrosine kinase 2 gene. This is the first FDA-authorized test intended to help physicians in evaluating patients for suspected polycythemia vera.



Imaging and pathology aids

  • Aminolevulinic acid hydrochloride, known as ALA HCl (Gleolan, NX; Jun 6) was approved as an optical imaging agent indicated in patients with gliomas (suspected World Health Organization grades III or IV on preoperative imaging) as an adjunct for the visualization of malignant tissue during surgery.
  • Marketing was approved for the Philips IntelliSite Pathology Solution (PIPS, Philips Medical Systems Nederland; Apr 17), as an aid to the pathologist to review and interpret digital images of surgical pathology slides prepared from formalin-fixed paraffin embedded tissue.
     

Challenges and uncertainties

The current administration’s initiatives to reduce administrative burdens is underway with the Patients Over Paperwork initiative. Eliminating and streamlining regulations to increase efficiency and improve beneficiary experience could be helpful to both oncologists and patients. For now, the Medicare Access and CHIP Reauthorization Act (MACRA) program, allows you to “pick your pace” in the 2017 performance year and report on at least one measure to avoid a payment reduction penalty on your Medicare payments in 2019. In the final rule for 2018, the CMS finalized a proposal to apply the MIPS [Merit-based Incentive Payment System] adjustment to all Part B items and services, which will include Part B drugs. This would be unfair to oncologists who treat on the basis of evidence-based guidelines and pathways and have no control over the costs of the drugs they prescribe.

In addition, more requirements will be imposed in 2018 in a move toward full MACRA implementation. All four composite categories (Quality – 60% for 2017; Advancing Care Information (ACI, renamed from Meaningful Use) – 25% for 2017; Improvement Activities (IA) – 15% for 2017; and Cost – 0% for 2017, but weighted in the future) will be scored, including resource use (cost) at 10%. CMS will collect data to assess the total cost of care and the Medicare Spend per Beneficiary to assess use. Full program implementation, with cost being assessed at 30% of your score is expected in the 2019 performance year. ASCO’s clinical affairs and policy experts have studied the implications of Part B chemotherapy drugs being included in the cost component of the MIPS scoring and will continue advocating for policies that hold clinicians responsible only for the aspects of care they can control, such as providing high-quality care based on the patient’s disease, biomarkers, comorbidities, and preferences, and not the costs of the evidence-based therapies needed by patients.
 

Toward a better 2018 for ourselves and our patients

As an eternal optimist, I remain enthusiastic that despite the many challenges, we will find effective ways to bring standard as well as newer, cell-based and targeted therapies to our patients and cover the costs of highly effective therapies. I also remain hopeful that improving technological capabilities and payment reforms will be used by innovative clinical and administrative care teams to give clinicians more time to improve the care and health of patients while validating the methodologies so that real world data can help us further craft therapies to improve the health of each individual who needs our care. As we close this 15th year of our journal, we hope our presentations of practical science and implementation content has helped support your work while freeing some time for you to enjoy the journey. Our best wishes for a joyful holiday season celebrated with friends and family and the patients who entrust us to help them face and live beyond their cancer diagnoses.

References

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HowDrugsareDevelopedandApproved/ApprovalApplications/
¬erapeuticBiologicApplications/Biosimilars/ucm580419.htm. Last
updated October 23, 2017. Accessed December 11, 2017.
2. ASCO CancerLinQ website. https://cancerlinq.org/. Publishing/
update information not available. Accessed November 3, 2017.
3. Bodenheimer T, Sinsky C. From triple to quadruple aim: care of the
patient requires care of the provider. https://www.ncbi.nlm.nih.gov/
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4. Institute for Healthcare Improvement. http://www.ihi.org/Engage/
Initiatives/TripleAim/Pages/default.aspx. No update information
given. Accessed November 3, 2017.
5. Robinson JC. Value-based physician payment in oncology: public and
private insurer initiatives. Milbank Q. 2017;95(1);184-203.
6. Newcomer L. Oral communication: Washington State Medical
Oncology Society meeting, August 19, 2017.
7. Newcomer LN, Gould B, Page RD, Donelan SA, Perkins M.
Changing physician incentives for a™ordable, quality cancer
care: results of an episode payment model. J Oncol Pract.
2014;10(5):322-326.
8. US Department of Health and Human Services website. Hematology/
oncology (cancer) approvals & safety notications. https://www.fda.
gov/Drugs/InformationOnDrugs/ApprovedDrugs/ucm279174.htm.
Last updated December 1, 2017. Accessed December 3, 2017.
9. Hem-Onc Today website. CAR T-cell therapy approval huge
step for oncology, but only ‘beginning of story’. https://www.
healio.com/hematology-oncology/leukemia/news/print/hemonctoday/%
7B33119631-5996-45cf-9be6-8e36466ded9e%7D/car-tcell-
therapy-approval-huge-step-for-oncology-but-only-beginningof-
story. Published September 25, 2017. Accessed November 9, 2017.
10. Gauthier J, Yakoub-Agha I. Chimeric antigen-receptor T-cell therapy
for hematological malignancies and solid tumors: Clinical data
to date, current limitations and perspectives. Curr Res in Transl Med.
2017;65(3):93-102.
11. Martin M, Holmes FA, Ejlertsen B, et al. Neratinib after trastuzumab-
based adjuvant therapy in early-stage HER2+ breast cancer:
5-year analysis of the phase III ExteNET trial [ESMO oral presentation].
Ann Oncol. 2017;28(suppl 5):v43-v67.
12. Le Tourneau C, Delord JP, Goncalves A, et al. Molecularly targeted
therapy based on tumour molecular proling versus conventional
therapy for advanced cancer SHIVA): a multicentre, openlabel,
proof-of-concept, randomised, controlled phase 2 trial. Lancet
Oncol. 2015;16(13):1324-1334.
13. Forte V, Barrak DK, Elhodaky M, Tung L, Snow A, Lang JE. ¬e
potential for liquid biopsies in the precision medical treatment of
breast cancer. Cancer Biol Med. 2016;13(1):19-40.
14. Smerage JB, Barlow WE, Hortobagyi GN, et al. Circulating tumor
cells and response to chemotherapy in metastatic breast cancer:
SWOG S0500. J Clin Oncol. 2014;32(31):3483-3489.
15. US National Library of Medicine. TAPUR: testing the use of food
and drug administration (FDA) approved drugs that target a specific
abnormality in a tumor gene in people with advanced stage cancer
(TAPUR). https://clinicaltrials.gov/ct2/show/NCT02693535.
First posted February 26, 2016; last updated September 18, 2017.
Accessed November 10, 2017.
16. US National Library of Medicine. NCI-MATCH: Targeted therapy
directed by genetic testing in treating patients with advanced refractory
solid tumors, lymphomas, or multiple myeloma. https://clinicaltrials.
gov/ct2/show/NCT02465060. First posted June 8, 2015; last
updated November 9, 2017. Accessed November 10, 2017.
17. US National Library of Medicine. QUILT-3.039: NANT Pancreatic
cancer vaccine: combination immunotherapy in subjects with pancreatic
cancer who have progressed on or after standard-of-care therapy.
https://clinicaltrials.gov/ct2/show/NCT03136406. First posted May
2, 2017; last updated October 30, 2017. Accessed November 10,
2017.
18. Cunanan KM, Gonen M, Shen R, et al. Basket trials in oncology:
A trade-o™ between complexity and eŸciency. J Clin Oncol.
2017;35(3):271-273.
19. ASCO website. https://university.asco.org/motb. Last update
November 2017. Accessed November 10, 2017.
20. ASCO website. Molecular oncology tumor boards invite discussion
of growing eld in cancer care. http://www.ascopost.com/issues/
february-25-2015/molecular-oncology-tumor-boards-invite-discussion-
of-growing-eld-in-cancer-care/. Published February 25, 2017.
Accessed November 10, 2017.
21. de Lartigue J. Liquid gold: blood-based biopsies make headway.
JCSO 2017;15(1):49-54.
22. Cristofanilli M, Budd GT, Ellis MJ, et al. Circulating tumor cells,
disease progression, and survival in metastatic breast cancer. N Engl J
Med. 2004;351(8):781-791.
23. Lucci A, Hall CS, Lodhi AK, et al. Circulating tumour cells in
non-metastatic breast cancer: a prospective study. Lancet Oncol.
2012;13(7):688-695.
24. Dawson SJ, Tsui DW, Murtaza M, et al. Analysis of circulating
tumor DNA to monitor metastatic breast cancer. N Engl J Med.
2013;368(13):1199-1209.
25. Chandarlapaty S, Chen D, He W, et al. Prevalence of ESR1 mutations
in cell-free DNA and outcomes in metastatic breast cancer: a
secondary analysis of the BOLERO-2 clinical trial. JAMA Oncol.
2016;2(10):1310-1315.
26. Kim SB, Dent R, Wongchenko WJ, et al. Concordance between
plasma-based and tissue-based next-generation sequencing in
LOTUS [Correspondence]. http://www.thelancet.com/journals/
lanonc/article/PIIS1470-2045(17)30785-4/fulltext. Published
November 2017. Accessed December 3, 2017.
27. Adalsteinsson VA, Ha G, Freeman SS, et al. Scalable whole-exome
sequencing of cell-free DNA reveals high concordance with metastatic
tumors. https://www.nature.com/articles/s41467-017-00965-y.
Published online November 6, 2017. Accessed November 19, 2017.
28. Parsons DW, Roy A, Yang Y, et al. Clinical genomics for children
with solid tumors: current realities and future opportunities
[Abstract]. Clin Cancer Res. 2016;22(1 Suppl):abstract IA16.
29. ¬ompson JC, Yee SS, Troxel AB, et al. Detection of therapeutically
targetable driver and resistance mutations in lung cancer patients by
next-generation sequencing of cell-free circulating tumor DNA. Clin
Cancer Res. 2016;22(23):5772-5782.
30. Press release, FDA. FDA approves axicabtagene ciloleucel
for large B-cell lymphoma. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm581296.htm. Last
updated October 25, 2017. Accessed November 6, 2017.
31. Press release, FDA. FDA Approves gemtuzumab ozogamicin
for CD33-positive AML. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm574518.htm. Last
updated September 1, 2017. Accessed November 6, 2017.
32. Press release, FDA. FDA grants regular approval to dabrafenib and
trametinib combination for metastatic NSCLC with BRAF V600E
mutation. https://www.fda.gov/Drugs/InformationOnDrugs/
ApprovedDrugs/ucm564331.htm. Last updated June 22, 2017.
Accessed November 6, 2017.

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Ann Oncol. 2017;28(suppl 5):v43-v67.
12. Le Tourneau C, Delord JP, Goncalves A, et al. Molecularly targeted
therapy based on tumour molecular proling versus conventional
therapy for advanced cancer SHIVA): a multicentre, openlabel,
proof-of-concept, randomised, controlled phase 2 trial. Lancet
Oncol. 2015;16(13):1324-1334.
13. Forte V, Barrak DK, Elhodaky M, Tung L, Snow A, Lang JE. ¬e
potential for liquid biopsies in the precision medical treatment of
breast cancer. Cancer Biol Med. 2016;13(1):19-40.
14. Smerage JB, Barlow WE, Hortobagyi GN, et al. Circulating tumor
cells and response to chemotherapy in metastatic breast cancer:
SWOG S0500. J Clin Oncol. 2014;32(31):3483-3489.
15. US National Library of Medicine. TAPUR: testing the use of food
and drug administration (FDA) approved drugs that target a specific
abnormality in a tumor gene in people with advanced stage cancer
(TAPUR). https://clinicaltrials.gov/ct2/show/NCT02693535.
First posted February 26, 2016; last updated September 18, 2017.
Accessed November 10, 2017.
16. US National Library of Medicine. NCI-MATCH: Targeted therapy
directed by genetic testing in treating patients with advanced refractory
solid tumors, lymphomas, or multiple myeloma. https://clinicaltrials.
gov/ct2/show/NCT02465060. First posted June 8, 2015; last
updated November 9, 2017. Accessed November 10, 2017.
17. US National Library of Medicine. QUILT-3.039: NANT Pancreatic
cancer vaccine: combination immunotherapy in subjects with pancreatic
cancer who have progressed on or after standard-of-care therapy.
https://clinicaltrials.gov/ct2/show/NCT03136406. First posted May
2, 2017; last updated October 30, 2017. Accessed November 10,
2017.
18. Cunanan KM, Gonen M, Shen R, et al. Basket trials in oncology:
A trade-o™ between complexity and eŸciency. J Clin Oncol.
2017;35(3):271-273.
19. ASCO website. https://university.asco.org/motb. Last update
November 2017. Accessed November 10, 2017.
20. ASCO website. Molecular oncology tumor boards invite discussion
of growing eld in cancer care. http://www.ascopost.com/issues/
february-25-2015/molecular-oncology-tumor-boards-invite-discussion-
of-growing-eld-in-cancer-care/. Published February 25, 2017.
Accessed November 10, 2017.
21. de Lartigue J. Liquid gold: blood-based biopsies make headway.
JCSO 2017;15(1):49-54.
22. Cristofanilli M, Budd GT, Ellis MJ, et al. Circulating tumor cells,
disease progression, and survival in metastatic breast cancer. N Engl J
Med. 2004;351(8):781-791.
23. Lucci A, Hall CS, Lodhi AK, et al. Circulating tumour cells in
non-metastatic breast cancer: a prospective study. Lancet Oncol.
2012;13(7):688-695.
24. Dawson SJ, Tsui DW, Murtaza M, et al. Analysis of circulating
tumor DNA to monitor metastatic breast cancer. N Engl J Med.
2013;368(13):1199-1209.
25. Chandarlapaty S, Chen D, He W, et al. Prevalence of ESR1 mutations
in cell-free DNA and outcomes in metastatic breast cancer: a
secondary analysis of the BOLERO-2 clinical trial. JAMA Oncol.
2016;2(10):1310-1315.
26. Kim SB, Dent R, Wongchenko WJ, et al. Concordance between
plasma-based and tissue-based next-generation sequencing in
LOTUS [Correspondence]. http://www.thelancet.com/journals/
lanonc/article/PIIS1470-2045(17)30785-4/fulltext. Published
November 2017. Accessed December 3, 2017.
27. Adalsteinsson VA, Ha G, Freeman SS, et al. Scalable whole-exome
sequencing of cell-free DNA reveals high concordance with metastatic
tumors. https://www.nature.com/articles/s41467-017-00965-y.
Published online November 6, 2017. Accessed November 19, 2017.
28. Parsons DW, Roy A, Yang Y, et al. Clinical genomics for children
with solid tumors: current realities and future opportunities
[Abstract]. Clin Cancer Res. 2016;22(1 Suppl):abstract IA16.
29. ¬ompson JC, Yee SS, Troxel AB, et al. Detection of therapeutically
targetable driver and resistance mutations in lung cancer patients by
next-generation sequencing of cell-free circulating tumor DNA. Clin
Cancer Res. 2016;22(23):5772-5782.
30. Press release, FDA. FDA approves axicabtagene ciloleucel
for large B-cell lymphoma. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm581296.htm. Last
updated October 25, 2017. Accessed November 6, 2017.
31. Press release, FDA. FDA Approves gemtuzumab ozogamicin
for CD33-positive AML. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm574518.htm. Last
updated September 1, 2017. Accessed November 6, 2017.
32. Press release, FDA. FDA grants regular approval to dabrafenib and
trametinib combination for metastatic NSCLC with BRAF V600E
mutation. https://www.fda.gov/Drugs/InformationOnDrugs/
ApprovedDrugs/ucm564331.htm. Last updated June 22, 2017.
Accessed November 6, 2017.

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