FGFR2 and breast cancer: In haplotype analysis, the risk haplotype of FGFR2 (rs1078806C-rs2420946T-rs2981579T-rs2981582T) was associated with a significantly increased luminal-like breast cancer risk compared with the rs1078806T-rs2420946C-rs2981579C-rs2981582C haplotype, with no association observed for ER− and PR− tumors.