CDKN2A and acute lymphoblastic leukemia: Owing to its high deletion incidence in adult B-ALL, we also analyzed the prognosis of patients with CDKN2A/B gene deletion and found that the deletion was an independent poor prognostic indicator in the Ph-B-ALL cohort, regardless of HSCT, and the single CDKN2A/B deletion was also associated with poor prognosis in each subgroup of Ph-B-ALL.