75 Dignam Dignam JJ JJ Wieand Wieand K K Johnson Johnson KA KA Fisher Fisher B B Xu Xu L L Mamounas Mamounas EP EP Obesity, tamoxifen use, and outcomes in women with estrogen receptor-positive early-stage breast cancer Obesity, tamoxifen use, and outcomes in women with estrogen receptor-positive early-stage breast cancer J Natl Cancer Inst J Natl Cancer Inst 2003 2003 95 95 19 19 1467 1467 1476 1476 10.1093/jnci/djg060 10.1093/jnci/djg060 14519753 14519753. Here, ESR1 is linked to obesity due to melanocortin 4 receptor deficiency.