In a population‐based case‐case study consisting of 2710 women, they found that age at menopause were positively associated with odds of triple‐negative breast cancer.23 In a case‐control study in Southeast Asia, late age of menopause was associated with an increased risk of luminal and basal‐like tumors.15 Women with benign breast disease and higher breast density were more common in HER2‐enriched subtype, whereas Holm et al. Here, ERBB2 is linked to breast fibrocystic disease.