
Are Surgeons Adept at Handling BRCA1/2 Mutations of Uncertain Significance?
Study identifies need for surgeons to maximize benefits of genetic testing for surgical decisions in breast cancer.
According to a new study published in the
Several of the researchers who are a part of the JCO study
For the current study, the authors surveyed a population-based sample of patients with breast cancer from 2 SEER registries in Georgia and Los Angeles, who were diagnosed between 2014 and 2015. About 68% (n = 2497) of the 3672 patients responded to questions on their genetic testing experience; the patients’ attending surgeons were also surveyed on genetic testing and results management.
Of the patients who responded to questions on genetic testing, only about 27% (n = 666) reported genetic testing. Nearly two-thirds of patients were tested prior to surgical treatment, and patients enrolled in commercial health plans did not face as much delays as those on government health plans. While 50% of patients discussed their results with a genetic counselor (57% at higher pretest risk and 42% at average risk), there was a pattern of discrepancy when it came to BLM in patients with VUS versus pathogenic mutations in the BRCA1/2 genes. While 80% of higher risk patients with pathogenic mutations in BRCA1/2 underwent BLM, 43% of higher risk patients with VUS also underwent BLM.
Interestingly, many women undergo BLM prior to receiving genetic testing or even seeing their results, according to the study.
The authors write that while a surgeon’s confidence with discussing genetic testing with patients increased with the volume of patients being managed, many surgeons continued to manage patients with VUS and with pathogenic mutations in BRCA1/2 the same way.
“Our findings suggest a limited understanding among physicians and patients of the meaning of genetic testing results,”
Senior author on the study, Steven Katz, MD, MPH, professor of medicine and of health management and policy at the University of Michigan, believes there’s need to maximize the benefits of genetic testing for patients with breast cancer, “to incorporate results into treatment decisions.”
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