This is an analysis of data from the ongoing FIGHT-203 study of pemigatinib in adults with MLNFGFR1 (NCT03011372). All primary and secondary endpoints were investigator-assessed according to protocol-defined criteria including modified response criteria for MDS/MPN and modified Lugano criteria for EMD...Pemigatinib is the first therapy to demonstrate durable and high rates of CR and CCyR in pts with MLNFGFR1...