Tyrosine kinases in KMT2A/MLL-rearranged acute leukemias as potential therapeutic targets to overcome cancer drug resistance
Fatih M. Uckun , Sanjive Qazi
Cancer Drug Resistance ›› 2022, Vol. 5 ›› Issue (4) : 902 -16.
Aim: The main goal of this study was to elucidate at the transcript level the tyrosine kinase expression profiles of primary leukemia cells from mixed lineage leukemia 1 gene rearranged (KMT2A/MLL-R+) acute myeloid leukemia (AML) and acute lymphoblastic leukemia (ALL) patients.
Methods: We evaluated protein tyrosine kinase (PTK) gene expression profiles of primary leukemic cells in KMT2A/MLL-R+ AML and ALL patients using publicly available archived datasets.
Results: Our studies provided unprecedented evidence that the genetic signatures of KMT2A/MLL-R+ AML and ALL cells are characterized by transcript-level overexpression of specific PTK. In infants, children and adults with KMT2A/MLL-R+ ALL, as well as pediatric patients with KMT2A/MLL-R+ AML, the gene expression levels for FLT3, BTK, SYK, JAK2/JAK3, as well as several SRC family PTK were differentially amplified. In adults with KMT2A/MLL-R+ AML, the gene expression levels for SYK, JAK family kinase TYK2, and the SRC family kinases FGR and HCK were differentially amplified.
Conclusion: These results provide new insights regarding the clinical potential of small molecule inhibitors of these PTK, many of which are already FDA/EMA-approved for other indications, as components of innovative multi-modality treatment platforms against KMT2A/MLL-R+ acute leukemias.
AML / ALL / MLL gene / tyrosine kinase / Leukemia
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