ERBB2 and breast cancer: A similar pattern of inverse association was observed for the HR-positive/HER2-negative breast cancer subtype (for 3–6 tablets/week, HRR = 0.66, 95% CI 0.47–0.94; for 7+ tablets/week, HRR = 0.83, 95% CI 0.68–1.01, data not shown).