Specifically, immature T-ALL cases were found to have fusion transcripts such as KMT2A::AFDN, ARID4B::ABL2, SET::NUP214, TPM4::KLF2, MIR181A1HG::HOXA11-AS, and CDK6::WDR74. This evidence concerns the gene KLF2 and acute lymphoblastic leukemia.