Identified risk factors for CBC include young age at first breast cancer diagnosis, [2, 6] breast cancer family history, [1, 7–10] mutations in BRCA1 and BRCA2 (BRCA1/2), [11, 12] young age at menarche, [13] nulliparity, [13] and obesity [14]. The gene discussed is BRCA1; the disease is obesity due to melanocortin 4 receptor deficiency.