ABL1 and mixed phenotype acute leukemia: Studies from west by Owaidah et al10, Carbonell et al11, Legrand et al12, Killick et al13 and Weir et al14 found the incidence of MPAL as 3.4%, 4.0%, 8.0%, 3.6% and 1.3% and BCR-ABL positivity as 9.1%, 30.8%, 35.0%, 38.1% and 18.8% respectively.