PF-114 is a 4th-generation oral tyrosine kinase-inhibitor (TKI) active against wild-type and mutated BCR::ABL1 isoforms including BCR::ABL1T315I. We present final results of a phase-1 study (NCT02885766)....5 of 16 subjects with BCR::ABL1T315I responded, including 4 achieving a MCyR, 2, a CCyR and 1, a MMR. 2 of 6 subjects failing ponatinib achieved a CHR....PF-114 was safe and effective in subjects failing ≥ 2 TKIs and those with BCR::ABL1T315I including those failing ponatinib.