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Neoadjuvant Chemotherapy or Endocrine Therapy for Invasive Ductal Carcinoma of the Breast With High Hormone Receptor Positivity and Human Epidermal Growth Factor Receptor 2 Negativity

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Key Points Question Is neoadjuvant endocrine therapy (NET) an alternative treatment for neoadjuvant chemotherapy (NACT) in patients with invasive ductal carcinoma (IDC) of the breast who have strong hormone receptor… Click to show full abstract

Key Points Question Is neoadjuvant endocrine therapy (NET) an alternative treatment for neoadjuvant chemotherapy (NACT) in patients with invasive ductal carcinoma (IDC) of the breast who have strong hormone receptor (HR) positivity and human epidermal growth factor receptor 2 (ERBB2) negativity? Findings This cohort study of 640 patients undergoing NET or NACT found that the adjusted hazard ratios for all-cause mortality in the NET group were significantly higher than in the NACT group. Meaning These findings suggest that NACT may be considered the first choice for neoadjuvant treatment for patients with strongly HR-positive and ERBB2-negative IDC.

Keywords: endocrine therapy; hormone receptor; invasive ductal; ductal carcinoma; neoadjuvant chemotherapy; receptor

Journal Title: JAMA Network Open
Year Published: 2021

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