Regarding the distribution of baseline characteristics between White American and Chinese individuals, the latter were more likely to be younger (P<.001) and have a lower-grade tumor (P<.001), infiltrating duct carcinoma (P<.001), luminal B or HER2-enriched subtype (P<.001), and a lower-stage tumor (P<.001) than White American participants. The gene discussed is ERBB2; the disease is neoplasm.