Several other uncommon fusion transcripts in CML have been identified so far such as e6a2 (Hochhaus et al. 1996) or e8a2 (Branford et al. 2000) as well as transcripts missing the ABL1 exon a2 [e.g. e13a3 (b2a3) or e14a3 (b3a3)]. Here, ABL1 is linked to chronic myelogenous leukemia, BCR-ABL1 positive.