No correlation between site of breakpoint in the BCR gene and platelet counts in philadelphia chromosome-positive CML
1992
Abstract In chronic myelogenous leukemia (CML) malignant cells are characterised by the Philadelphia chromosome (Ph), resulting from a translocation t(9;22). The position of the breakpoint within the major breakpoint cluster region (M-bcr) on chromosome 22 has been shown to correlate with the clinical course of the disease or, more recently, thrombopoietic activity. We have therefore determined the breakpoint localisation in 53 Ph-positive CML patients. Following the 5′/3′-region definition of Inokuchi et al. Leukemia Research 15 , 1067 (1991) [1], 22 of our patients have 5′ and 31 of our patients have 3′ orientated breaks. No correlation was found between platelet counts and breakpoint localisation.
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