Latinas in the United States are more likely than non-Latina Whites to be diagnosed with breast cancer at advanced stages, with breast cancer subtypes that are more aggressive (e.g., triple-negative, and HER2-overexpressing tumors) (Zavala et al. 2021; Giaquinto et al. 2022; Swami et al. 2022). This evidence concerns the gene ERBB2 and breast cancer.