The function of HEMGN (hemogen, Ensembl gene identifier ENSG00000136929) is as follows. Regulates the proliferation and differentiation of hematopoietic cells. Overexpression block the TPA-induced megakaryocytic differentiation in the K562 cell model. May also prevent cell apoptosis through the activation of the nuclear factor-kappa B (NF-kB). {ECO:0000269|PubMed:14730214, ECO:0000269|PubMed:15332117, ECO:0000269|PubMed:15920494}.