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VHA Practice Guideline Recommendations for Diffuse Gliomas
Although histology still plays a critical role in diagnosing diffuse gliomas, additional ancillary testing is an essential tool for VA pathology...
Vickie Venne, MS, was a Senior Genetic Counselor for the US Department of Veterans Affairs (VA) Genomic Medicine Services at the time this conversation was recorded.
Lisa Arfons, MD, is a Medical Oncologist at the Louis Stokes Cleveland VA Medical Center in Ohio where she is the Cancer Committee Chair.
Maj Mauricio De Castro, MD, FACMG, USAF, is a Clinical Geneticist and the Director of the Molecular Genetics Laboratory located at Keesler Air Force Base in Mississippi, the reference germline testing laboratory for the US Department of Defense (DoD). Maj De Castro currently participates in a telegenetics initiative that sees remote patients remotely at DoD bases across the world.
Renee Rider, JD, MS, LCGC, is a Lead Genetic Counselor with the VA Genomic Medicine Service.
Ishita Thakar, MD, FACP, is the Women’s Health Medical Director and the Deputy Chief of Staff at the Oklahoma City VA Medical Center.
Renee Rider. I want to talk about money. When we order a genetic test, that test is paid for by the pathology department at the patient’s VAMC. Most of the pathology departments we work with are clear that they only can provide
genetic testing that is considered medically necessary. Thus, we review each test to make sure it meets established guidelines for testing. We don’t do population genetic screening as there isn’t evidence or guidelines to support offering it. We are strict about who does and does not get genetic testing, partly because we have a responsibility to pathology departments and to the taxpayers.
GMS focuses on conditions that are inherited, that is to say, we deal with germline genetics. Therefore, we discontinue referrals for somatic requests, such as when an OncotypeDX test is requested. It is my understanding that pharmacogenetic referrals may be sent to the new PHASeR initiative, which is a joint collaboration between the VA and Sanford Health and is headed by Deepak Voora, MD.
We generally don’t see patients who still are having diagnostic procedures done. For example, if a veteran has a suspicious breast mass, we recommend that the provider workup the mass before referring to GMS. Regardless of a genetic test result, a suspicious mass needs to be worked up. And, knowing if the mass is cancerous could change how we would proceed with the genetic workup. For example, if the mass were not cancerous, we may recommend that an affected relative have the first genetic evaluation. Furthermore, knowing if the patient has cancer changes how we interpret negative test results.
Another group of patients we don’t see are those who already had genetic testing done by the referring provider. It’s a VA directive that if you order a test, you’re the person who is responsible for giving the results. We agree with
this directive. If you don’t feel comfortable giving back test results, don’t order the test. Often, when a provider sends a patient to us after the test was done, we discover that the patient didn’t have appropriate pretest counseling. A test result, such as a variant of uncertain significance (VUS), should never be a surprise to either the provider or the patient.
Ishta Thakar. For newly diagnosed cancers, the first call is to the patient to inform them that they have cancer. We usually bring up genetic counseling or testing, if applicable, when they are ready to accept the diagnosis and have a conversation about it. All our consults are via telehealth, so none of our patients physically come to GMS in Salt Lake City. All the consults are done virtually.
For newly diagnosed patients, we would send a consult in within a couple of weeks. For patients who had a family history, the referral would not be urgent: They can be seen within about 3 months. The turnaround times for GMS are so much better than what we have available in the community where it’s often at least 6 months, as previously noted.
Although histology still plays a critical role in diagnosing diffuse gliomas, additional ancillary testing is an essential tool for VA pathology...
Genomic testing may be a vital component in the medical management of patients with complex clinical phenotypes and cancer.