ERBB2 and invasive ductal breast carcinoma: We also found that patients aged above 50 at diagnosis, with comorbidities, normal BMI, 7th AJCC anatomic pathological stage IIIC, invasive ductal carcinoma, higher histologic grade, HER2-enriched subtype, and patients who received mastectomy were statistically significantly associated with a lower overall mortality rate, regardless of the anesthetic techniques.