In addition to FGFR1, fibroblast growth factor receptor 2 (FGFR2 gene, chromosome 10) and fibroblast growth factor receptor 3 (FGFR3 gene, chromosome 4) belong to the same family of receptor tyrosine kinases and are linked to breast cancer susceptibility. The gene discussed is FGFR2; the disease is breast carcinoma.