Furthermore, the BCR-ABL1 protein product in B-ALL samples was 185/190 kDa (p190BCR-ABL1) as opposed to the 210 kDa BCR-ABL1 protein product (p210BCR-ABL1) detectable in CML samples [15, 17]. Here, ABL1 is linked to chronic myelogenous leukemia, BCR-ABL1 positive.