research
A Negative BRCA Test Did Not Erase Family Risk
Ontario records placed lifetime breast-cancer risk near 25% for referred women without a pathogenic BRCA result.
Summary
Ontario records placed lifetime breast-cancer risk near 25% for referred women without a pathogenic BRCA result.
Cedars-Sinai researchers analyzed records for nearly 16,000 Ontario women tested between 2007 and 2016. In this referred, family-history-enriched group, those without a pathogenic BRCA1 or BRCA2 result still had an estimated 25% lifetime breast-cancer risk, while women with variants of uncertain significance were near 30%. The observational study supports risk assessment beyond a binary genetic result; it does not apply the same estimate to every person with a negative test.
Why it matters
Ontario records placed lifetime breast-cancer risk near 25% for referred women without a pathogenic BRCA result.
Limits and context
- The observational study supports risk assessment beyond a binary genetic result; it does not apply the same estimate to every person with a negative test.
Key claims
Ontario records placed lifetime breast-cancer risk near 25% for referred women without a pathogenic BRCA result.
Qualification: The observational study supports risk assessment beyond a binary genetic result; it does not apply the same estimate to every person with a negative test.
Evidence: source-2026-07-31-013
Sources
- Cedars-Sinai via Newswise: Family history after BRCA testingCedars-Sinai · secondary reporting
Corrections
No corrections have been recorded for this story.