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WHO Classification of Tumours
Mixed phenotype acute leukaemia with t(9;22)(q34;q11.2); BCR-ABL1
Tumours of haematopoietic and lymphoid tissues


This is a leukaemia meeting the criteria for MPAL in which the blasts also have the t(9;22) translocation or BCR-ABL1 rearrangement. Some patients with chronic myeloid leukaemia may develop or even present with a mixed blast phase that would meet criteria for MPAL, however this diagnosis should not be made in patients known to have had CML.

> Related topics
Overview: Acute leukaemias of ambiguous lineage