ERBB2 and neoplasm: In HR-/HER2- patients, the tumor biology was significantly associated with survival, with histologic grade being significantly associated with OS (HR 1.34, 95% CI 1.06–1.71, p = 0.014) and LVI being significantly associated with SAR (HR 1.38, 95% CI 1.09–1.75, p = 0.007) and OS (HR 1.43, 95% CI 1.13–1.81, p = 0.003).