Additional BCR-ABL1 Mutations Identified By Sensitive Mass Spectrometry In Chronic Phase CML Patients With T315I Treated With Ponatinib Are Associated With Relatively Inferior Responses and Outcome
Abstract:Background
BCR-ABL1 mutations (muts) frequently cause resistance to tyrosine kinase inhibitors (TKIs) in CML. T315I, the most common mut, confers resistance to 1st and 2nd generation TKIs. In vitro studies suggest that all common individual muts are sensitive to the pan-BCR-ABL1 TKI ponatinib, and durable responses have been observed in patients (pts) with T315I. We have shown that low level muts below the detection limit of Sanger sequencing (SS) are important clinically, and that pts with &… Show more
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