ERG is an ETS family transcription factor (TF) frequently involved in human cancers, including leukemia [PMID: 21664289], prostate cancer [PMID: 16254181] and Ewing’s sarcoma [PMID: 8223458, PMID: 10561219]. It functions as an oncogene through chromosomal translocations or overexpression. In human leukemia, ERG was initially thought to play a role in leukemogenesis based on the t(16;21) translocation in acute myeloid leukemia (AML), leading to formation of the FUS (TLS)-ERG fusion [PMID: 8234289]. In some cases of AML with this translocation, the leukemia exhibits features of acute megakaryoblastic leukemia [PMID: 12091356].