Clinical Topics & News
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.
Last year we started the telegenetics initiative, which is small compared to the VA—it is comprised of 2 geneticists and 1 genetic counselor—but with the full intent of growing it over time. Its purpose is to extend the resources we
had to other MTFs. Genetics professionals stationed state-side can provide care to remote facilities with limited access to local genetics support such as Cannon Air Force Base (AFB) or overseas facilities such as Spangdahlem AFB in Germany.
We recognize there are military-specific needs for the DoD regarding the genetic counseling process that have to take into account readiness, genetic discrimination, continued ability to serve and fitness for duty. For this important reason, we are seeking to expand our telegenetics initiative. The goal is to be able to provide 100% of all genetic counseling in-house, so to speak.
Currently, providers at the 4 pilot sites (Cannon AFB, Fort Bragg, Spangdahlem AFB, and Guantanamo Bay) send us referrals. We triage them and assign the patient to see a geneticist or a counselor depending on the indication.
On the laboratory side, it has been a very interesting experience. Because we provide comprehensive germline cancer testing at very little cost to the provider at any MTF, we have had high numbers of test requests over the years.
In addition to saving the DoD millions of dollars in testing, we have learned some interesting lessons in the process. For instance, we have worked closely with several different groups to better understand how to educate providers on the genetic counseling and testing process. This has allowed us to craft a thorough and inclusive consent form that addresses the needs of the DoD. We have also learned valuable lessons about population-based screening vs evidence-based testing, and lessons surrounding narrow-based testing ( BRCA1 and BRCA2 only testing) vs ordering a more comprehensive panel that includes other genes supported by strong evidence (such as PALB2, CHEK2, or TP53).
For example, we have found that in a significant proportion of individuals with and without family history, there are clinically relevant variants in genes other than BRCA1 or BRCA2. And so, we have made part of our consent process,
a statement on secondary findings. If the patient consents, we will report pathogenic variants in other genes known to be associated with cancer (with strong evidence) even if the provider ordered a narrow panel such as BRCA1 and BRCA2 testing only. In about 1% to 4% of patients that would otherwise not meet NCCN guidelines, we’ve reported variants that were clinically actionable and changed the medical management of that patient.
We feel strongly that this is a conversation that we need to have in our field, and we realize it’s a complex issue, maybe we need to expand who gets testing. Guideline based testing is missing some patients out there that could benefit from it.
Vickie Venne. There certainly are many sides to the conversation of population-based vs evidence-based genetic testing. Genetic testing policies are changing rapidly. There are teams exploring comprehensive gene sequencing for
newborns and how that potential 1-time test can provide information will be reinterpreted as a person goes from cradle to grave. However, unlike the current DoD process, in the VA there are patients who we don’t see.
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.
CLL incidence by race and location