NCIt definition : Human v-abl Abelson murine leukemia viral oncogene homolog 1 (ABL1) gene, located
at 9q34.1, encodes proto-oncogene tyrosine-protein kinase ABL1 protein. Alternative
splicing of this gene produces two protein isoforms. A t(9;22) translocation, resulting
in the fusion of the BCR and ABL1 genes, has been detected in many cases of chronic
myelogeneous leukemia.. This BCR-ABL fusion gene is also present in acute myeloid
leukemia and acute lymphoblastic leukemia.;