Universal BRCA testing worthwhile for relatives of high-grade serous ovarian cancer patients

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– Universal BRCA mutation testing for first-degree relatives of women with high-grade serous ovarian cancer could prevent significantly more cases, according to a study presented at the annual clinical and scientific meeting of the American College of Obstetricians and Gynecologists.

Women with high-grade serous ovarian cancer have a 20% chance of having a BRCA mutation; however, the risk is 50% for first degree relatives of someone with that mutation.

“Until we find an effective screening test for ovarian cancer, which can identify women at an early stage for which there is curative treatment, we need to maximize opportunities for prevention,” said Janice S. Kwon, MD, the gynecologic oncology fellowship program director at the University of British Columbia, Vancouver. “An obvious target group,” she added, are women “at highest risk of developing ovarian cancers, specifically those who inherit mutations in BRCA1 or BRCA2.”

First-degree relatives of ovarian cancer patients have three conceivable options if their BRCA status is unknown, and have no other risk factor for BRCA testing: To not undergo testing; to get tested and, if found to have the mutation, undergo risk-reducing surgery (bilateral salpingo-oophorectomy); or to undergo surgery without testing.

To estimate the efficiency and cost effectiveness of universal BRCA testing of female first-degree relatives of women with high-grade serous ovarian cancer, Dr. Kwon and her colleagues used the “Markov Monte Carlo” simulation model, with a time horizon of 50 years, evaluating the costs and benefits of those three strategies.

They acknowledged that testing excluded women with a personal history of breast cancer and did not include nonhormonal interventions in their analysis.

They found that the average quality-adjusted life year (QUALY) gain of universal BRCA testing was 19.20 years, compared with 18.99 years for no BRCA testing, and 18.48 years for universal surgery with no BRCA testing.

Meeting/Event

ACOG 2018

Publications

MDedge ObGyn Ob.Gyn. News Family Practice News Internal Medicine News Oncology Practice

Topics

Gynecologic Cancer Breast Cancer Oncology Preventive Care

Article Type

News