Xie et al. have found that fibroblast growth factor receptor (FGFR) 1 aberrations tend to occur in ER/PR positive (79/148, 53.4%), and HER2-enriched (30/148, 23.4%) BM from BC, while it is less represented in TNBC (20/148, 15.6%). Here, ERBB2 is linked to breast cancer.