PTPRJ and acute lymphoblastic leukemia: Multiple genes are associated with predisposition to ALL, including polymorphic variants in ARID5B, BAK1, CDKN2A, CDKN2B, CEBPE, ELK3, ERG, GATA3, IGF2BP1, IKZF1, IKZF3, LHPP, MYC, PTPRJ, TP63 and the BMI1-PIP4K2A locus or rare mutations in PAX5, TP53, IKZF1 and ETV6 [16].