Similar to PAX5, the deletions in CDKN2A/B were found in all BCP-ALL subtypes, but were especially enriched in BCR-ABL1 (65%, OR = 3.95, p = 0.003), BCR-ABL1-like (54%, OR = 2.88, p < 0.001), and B-other cases (OR = 1.67, p = 0.026). This evidence concerns the gene PAX5 and acute lymphoblastic leukemia.