期刊
ONCOGENE
卷 22, 期 36, 页码 5702-5706出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.onc.1206543
关键词
chronic myeloid leukaemia; STI-571/Glivec; PDGFRA
Two cases of atypical chronic myeloid leukaemia (CML) carrying the t(4;22)(q12;q11) translocation involving the breakpoint cluster region (BCR) and platelet-derived growth factor a receptor (PDGFRA) genes have been recently characterized. We report a third case of atypical CML with the same translocation but with a distinct breakpoint fusing BCR exon 1 with PDGFRA exon 13. The patient had a clinical presentation of CML with progressive transformation in B-cell acute lymphoblastic leukaemia. The involvement of PDGFRA led us to treat the patient with the small organic compound imatinib mesylate/STI571 (Glivec) that blocks the ATP binding site of tyrosine kinases such as Abelson, KIT and platelet-derived growth factor receptors. The patient subsequently achieved a rapid clinical and molecular response clearly demonstrating, for the first time, that Glivec is active against PDGFRA in vivo. Therefore, our study expands the list of Glivec targets and has direct biological and also clinical implications.
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