285 patients with advanced cancer were screened, identifying FGFR1 amplification in 18% (20/111) HER2 negative breast cancer, 9.5% (4/42) NSCLC, and FGFR2 amplification in 7.6% (10/132) gastroesophageal (GC). Here, FGFR1 is linked to breast carcinoma.