The dominance pattern of key genes affected in B-ALL cases was similar to earlier studies from India (IKZF1, CDKN2A/B, PAX5, ETV6) (8, 9, 12) and different from that reported by other groups where deletions in CDKN2A/B and ETV6 were dominant (6). This evidence concerns the gene IKZF1 and acute lymphoblastic leukemia.