Recently, Tavares et al. (2016) observed the induction of cytotoxicity by L-amino acid oxidase activity from the venom of Calloselasma rhodostoma species in bone marrow erythroleukemia cell lines (HEL92.1.7 cells) and megakaryoblastic leukemia (Set-2 cells) [27]. This evidence concerns the gene IL4I1 and adult acute megakaryoblastic leukemia.