May participate in the regulation of cell proliferation through the E2F/RB pathway. May be involved in molecular regulation of hematopoietic stem cells and progenitor cell lineage commitment and differentiation (By similarity). {ECO:0000250, ECO:0000269|PubMed:16984923}. This is the function of ENSG00000170779 (CDCA4, cell division cycle associated 4).