ERBB2 and neoplasm: In our population-based, cross-sectional study from 2009 to 2018, the most common tumor was the HR+/HER2− (luminal A-like) subtype; meanwhile, the HR+/HER2+ (luminal B-like) subtype was the less frequent subtype in the early years but became the second most common subtype at the end of the study period.