Tyrosine kinase inhibitor response of ABL-class acute lymphoblastic leukemia: the role of kinase type and SH3 domain
Inge van Outersterp,
Sarah K. Tasian,
Caitlin E. J. Reichert
et al.
Abstract:Acute lymphoblastic leukemia (ALL) with fusions of ABL-class tyrosine kinase genes other than BCR::ABL1 occurs in approximately 3% of children with ALL. The tyrosine kinase genes involved in this BCR::ABL1-like (Ph-like) subtype include ABL1, PDGFRB, ABL2, and CSF1R, which each have up to ten described partner genes. ABL-class ALL resembles BCR::ABL1-positive ALL by a similar gene expression profile, a poor response to chemotherapy, and sensitivity to tyrosine kinase inhibitors (TKIs). There is a lack of compr… Show more
High-risk Ph-like ALL includes genomic rearrangement of the ABL1 and ABL2 genes (collectively ABL-rearranged, ABLr), and novel treatments are required. For the first time, we demonstrate asciminib efficacy in ABLr ALL, but only when the ABL SH3 domain is present.
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