SNP arrays analyses revealed that among the 144 patients tested (Table 1), deletions of IKZF1 occurred in 22 out of 38 (58%) B-NEG ALL cases and in 80 out of 106 (75%) adult BCR-ABL1+ cases, indicating that IKZF1 deletion is more frequent in the BCR-ABL1+ ALL subgroup (p = 0.04). The gene discussed is IKZF1; the disease is acute lymphoblastic leukemia.