marginally significantP =0.05
We observed a marginally significant association of the G allele in ERCC4 -rs744154 with breast cancer risk for both BRCA1 (HR: 0.78, 95% CI: 0.60–1.00, P =0.05) and BRCA2 (HR: 0.68, 95% CI: 0.45–1.02, P =0.06) mutation carriers.