Type of Adjuvant Systemic Therapy in Patients With Hormone Receptor–Positive and Erb-B2 Receptor Tyrosine Kinase 2 (
Abbreviations: ALND, axillary lymph node dissection; CDK4/6, cyclin-dependent kinase 4/6; GnRH, gonadotropin-releasing hormone.Formerly Difference in proportions.A total of 151 of 500 patients (30.2%) underwent NACT, 13 had neoadjuvant endocrine treatment, and 1 had neoadjuvant double 