Recently, the polypyrimidine tract-binding protein 1 (PTPBP1) splicing repressor has been implicated in the regulation of alternative splicing of FGFR1α and FGFR1β. The study conducted in breast cancer cells revealed that PTBP1 represses the splicing of FGFR1β [138]. Here, PTBP1 is linked to breast cancer.