The molecular analysis of different subsets of pediatric B-ALL (t (12; 21), TEL-AML1; t (1;19) E2A-PBX1; and t (4;11) MLL-AF4) identified most differentially regulated lncRNAs (BALR- 1, BALR-2, BALR-6, and LINC00958) [134]. This evidence concerns the gene AFF1 and precursor B-cell acute lymphoblastic leukemia.