Regarding deletion of CDKN2A/CDKN2B genes, biallelic loss of CDKN2A was significantly more common in Ph+ALL cell lines (64.3%) than in Ph-negative BCP−ALL cell lines (20%; p = 0.0019), while there was no statistically significant difference in the incidence of biallelic loss of CDKN2B between Ph+ALL cell lines (42.9%) and Ph-negative BCP-ALL cell lines (26.6%; p = 0.196) (S3 Table). This evidence concerns the gene CDKN2B and acute lymphoblastic leukemia.