By contrast, Garg et al. studied quantitative WT1 gene transcripts by competitive reverse transcription polymerase chain reaction in acute leukemia and found that accurate quantification of WT1 gene transcripts in both acute myeloid leukemia and acute lymphoblastic leukemia patients at presentation was an important prognostic pretreatment characteristic and a useful predictive marker of leukemia relapse [30]. This evidence concerns the gene WT1 and acute lymphoblastic leukemia.