No genome-wide correlations and little shared genetic architecture between reproductive life-history traits and estrogen receptor-positive breast cancer risk.

Genome-wide analyses reveal minimal genetic correlation between reproductive traits and estrogen receptor-positive breast cancer risk in European populations.

• Why it matters: Understanding the genetic links between reproductive life-history traits and breast cancer risk is crucial for unraveling the evolutionary factors influencing disease development and improving risk prediction.
• What they did: The study used genomic restricted maximum-likelihood and linkage disequilibrium score regression methods on biobank and GWAS data, analyzing three reproductive traits across multiple datasets, totaling thousands of individuals.
• The result: Findings show low, non-significant genetic correlations and only three loci with pleiotropic effects, indicating little shared genetic architecture and suggesting that life-history trade-offs have limited influence on ER+ BC risk.