In the past decade, as targeted therapies have permitted better management of CLL, a new realm of possibilities has opened up for patients with this blood cancer.
“Previously, patients may not have been candidates for elective surgeries, such as hip replacements,” said hematologist-oncologist Helen Ma, MD, of the University of Irvine (Calif.) and VA Long Beach Healthcare System. She is the lead author of the report, which appeared in the British Journal of Hematology.
“Now that targeted therapies are controlling CLL well, patients may elect to have procedures that they may not have considered if their blood counts were very low or they felt too unwell to go through such invasive surgeries,” said Dr. Ma in an interview. In fact, the study authors noted that, “with currently available treatments, many patients with CLL are living considerably longer than the 1-year life expectancy threshold that proceduralists require.”
But extra surgical risks persist. “Both CLL and its treatment can increase the risk of complications during and after procedures, though available data are not consistently stratified by stage and whether patients are undergoing treatment,” the report authors noted.
Research has linked CLL to higher rates of blood transfusions in cardiac surgeries: One study, conducted partially in the era of targeted therapy, found that 87% of these surgery patients with CLL needed blood products vs. 65% of those who didn’t have CLL (P = .01). Studies didn’t find any extra risk of infections in patients with CLL, however, and there are conflicting findings about whether hospital mortality is higher.
Another study, also conducted partially in the era of targeted therapy, found that patients with CLL who had percutaneous coronary intervention procedures “developed higher rates of in-hospital mortality, any complication, bleeding and postoperative stroke compared to those seen in patients without leukemia.”
The authors of the new report noted that “patients with more advanced stage are at increased risk of bleeding and thromboembolic events relevant to their disease and invasive procedures.” Patients at more than minimal risk should undergo electrocardiograms prior to cardiac procedures, they wrote. Stress tests, coronary angiography, and percutaneous coronary intervention may also be warranted.
“To optimize evaluation and perioperative management, we strongly recommend the prospective collaborative inclusion of a multidisciplinary team including hematologists/oncologists, cardiologists (ideally cardio-oncologists), surgeons and anesthetists, as well as their ongoing involvement during the postoperative period,” the authors wrote.
As for medications, the researchers said that “generally, antibody therapy has no impact on surgery.” They added, “There is no evidence to hold treatment with anti-CD20 monoclonal antibodies prior to procedures unless the patient has cytopenias that may be a contra-indication. If that is the case, we recommend holding until counts recover to the parameters required for the procedure.”
In regard to Bruton’s tyrosine kinase inhibitors such as ibrutinib, “patients undergoing major surgeries with high risk of bleeding should hold Bruton’s tyrosine kinase inhibitors for a week prior to surgery to ensure adequate platelet function recovery given the disruption between collagen and platelet aggregation. Medications can be resumed 3-7 days after achieving postoperative hemostasis, depending on the type of surgery and risk of bleeding.”
As for venetoclax, “prior to surgery, patients should receive granulocyte colony-stimulating factor for neutropenia, blood transfusions for anemia, and platelet transfusions for thrombocytopenia to maintain procedural parameters.”
In the big picture, study lead author Dr. Ma said, “patients with CLL are doing well on continuous targeted treatments, and if there are otherwise no contraindications, they should be considered for procedures to improve their quality of life.”
In an interview, Stanford (Calif.) University surgeon Joe Forrester MD, MSc, who’s familiar with the report findings, said its conclusions are valid. “The nice thing is that a lot of the [CLL] therapies don’t have a lot of surgical side effects. Most should not preclude a patient from going to surgery.”
He advised colleagues to make sure to be open with patients about the heightened surgical risks due to CLL, such when they need emergency procedures. And it’s important to be realistic about whether patients will live long enough to benefit from the rare surgeries – such as weight-loss procedures – that won’t show major benefits for 5-10 years, he said.
The Lymphoma Research Foundation supported the study. Dr. Ma, several coauthors, and Dr. Forrester report no disclosures. One coauthor reports multiple relationships with industry.