Cancer Screening & PreventionJuly 29, 2026·5 min read
By the CIRRUS Editorial Team — how we write and source this
BRCA and genetic testing: understanding hereditary cancer risk before you test
BRCA mutations carry substantial, well-documented cancer risk implications, but genetic testing raises considerations — for the individual and their family — worth thinking through before testing, not just after results arrive.
BRCA1 and BRCA2 gene mutations are among the most well-studied hereditary cancer risk mutations, associated with substantially elevated lifetime risk of breast and ovarian cancer in carriers, and to a lesser but still meaningful degree, certain other cancers including prostate and pancreatic cancer — the risk elevation associated with a confirmed mutation is genuinely significant and well-documented across a large body of research, which is exactly why understanding testing implications carefully, before testing rather than only after results arrive, matters.
Genetic counseling before testing is generally recommended specifically because a BRCA test result carries implications extending well beyond the individual being tested: a positive result has direct relevance for blood relatives, who may share the same mutation and the same elevated risk, raising family communication considerations that a pre-test genetic counseling conversation helps a patient think through deliberately rather than confronting unprepared after an unexpected positive result arrives.
Testing criteria generally focus on personal or family history factors suggesting an elevated likelihood of carrying a mutation — a personal or family history of breast cancer at a younger age than typical, ovarian cancer at any age, male breast cancer, or a known mutation already identified in a family member — rather than recommending BRCA testing for the general population without one of these specific risk indicators present, since testing without these risk indicators has a low likelihood of detecting a mutation and doesn't reflect current testing guidance.
For patients who do test positive, a range of risk management options exist beyond simply increased surveillance alone — including enhanced screening protocols, risk-reducing medications in some cases, and for some patients, risk-reducing surgery — and working through these options with a genetic counselor and appropriate specialists, rather than researching independently under the stress of a new result, generally produces a more informed and less overwhelming decision-making process for what is, understandably, a significant and emotionally weighty result to process.
This article is general health information, not medical advice, and doesn’t replace evaluation by your own physician. Talk to a doctor about anything specific to your own diagnosis or treatment.