A mutation in BRCA1 increases risk for which cancers?

Prepare for the NBME Form 11 Test with targeted flashcards and multiple-choice questions. Each question includes hints and explanations to aid learning. Boost your readiness for exam day!

Multiple Choice

A mutation in BRCA1 increases risk for which cancers?

Explanation:
BRCA1 is a tumor suppressor gene that helps repair double-strand DNA breaks through homologous recombination. When BRCA1 is mutated and not working properly, cells accumulate DNA damage, which especially increases cancer risk in tissues with rapid cell turnover and hormonal influence, like breast and ovarian tissues. That’s why the cancers most strongly linked to BRCA1 mutations are breast cancer and ovarian cancer. The other cancer pairs aren’t as strongly associated with BRCA1 in standard risk patterns (prostate and pancreatic risks are more tied to BRCA2, and lung, colon, liver, and kidney cancers aren’t the classic BRCA1-linked cancers).

BRCA1 is a tumor suppressor gene that helps repair double-strand DNA breaks through homologous recombination. When BRCA1 is mutated and not working properly, cells accumulate DNA damage, which especially increases cancer risk in tissues with rapid cell turnover and hormonal influence, like breast and ovarian tissues. That’s why the cancers most strongly linked to BRCA1 mutations are breast cancer and ovarian cancer. The other cancer pairs aren’t as strongly associated with BRCA1 in standard risk patterns (prostate and pancreatic risks are more tied to BRCA2, and lung, colon, liver, and kidney cancers aren’t the classic BRCA1-linked cancers).

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