PTPN13 and leukemia: The tyrosine phosphatase FAS-associated phosphatase 1 (FAP-1) inhibits FAS-mediated apoptosis and stabilizes β-catenin through inhibition of GSK3β; therefore, inhibition of FAP-1 using a blocking tripeptide increased the response to TKIs and suppressed leukemia progression in mice transplanted with BCR-ABL1-mutant cells36.