We did not find any association between BMI and molecular subtype but, according to menopausal status, we observed higher BMI in postmenopausal luminal A and HER2-positive patients, as published in other studies that showed obesity as a risk factor for hormone receptor-positive breast cancer in postmenopausal women [2]. The gene discussed is ERBB2; the disease is obesity due to melanocortin 4 receptor deficiency.