Women with Ki67 expression above the median had suggestively higher risk of breast cancer, irrespective of AR expression (low AR/high Ki67: OR = 1.5, 95% CI = 0.6–3.9; high AR/high Ki67: OR = 1.2, 95% CI = 0.5–3.1), relative to women with low AR and low Ki67 expression. Here, MKI67 is linked to breast cancer.