Patients with HDC (P = 0.013) or TNFRSF1A (P = 0.0031) overexpression showed shorter PFS, whereas patients with RAD51 overexpression showed prolonged PFS (P = 0.049)….The immune-related gene model consisting of HDC, TNFRSF1A, and RAD51 could potentially predict the efficacy of EVE in premenopausal patients with HR+/HER2− ABC with endocrine resistance, which could help stratify responders to EVE and guide the choice of EVE in clinical practice.