TAL1 and T-cell acute lymphoblastic leukemia: In T cell acute lymphoblastic leukemia (T-ALL), short insertion mutations in noncoding intergenic region of TAL1-specific SE produce a de novo myeloblastosis oncogene (MYB) TF binding motif, followed by the recruitment of MYB and H3K27ac-binding CBP, which is important for SE initiation, seRNA transcription, and TAL1 oncogene expression [16].