15. Neven P, Rugo HS, Tolaney SM, Iwata H, Toi M, Goetz MP, et al. Abemaciclib plus fulvestrant in hormone receptor-positive, human epidermal growth factor receptor 2-negative advanced breast cancer in premenopausal women: subgroup analysis from the MONARCH 2 trial. Breast Cancer Res. 2021;23:87. This evidence concerns the gene ERBB2 and breast carcinoma.