Natural menopause, menarche and breast cancer risk in BRCA1 and BRCA2 pathogenic variant carriers: a Mendelian randomization analysis.

Br J Cancer · 2026 · PMC13133355 · PMID 41912676

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an increasing trendno p-value reported

The effect size showed an increasing trend in OR by age for both subtypes, with no association below age 40 years.

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