BRCA1 and breast cancer: The BRCA1 p.Pro346Ser was associated with breast cancer risk in Chinese women [5 out of 859 Chinese breast cancer patients (0.6%) and 2 out of 1,055 Chinese controls (0.2%), OR = 3.3; 95% CI, 0.6–17.3; p = 0.15] (Additional file 1: Table S3a and Additional file 2: Figure S2), but the results were not statistically significant.