May be a transcription factor that may be involved in hematopoiesis, oncogenesis, and immune responses (PubMed:11352661). Plays a role in postnatal myogenesis, may be involved in the regulation of satellite cells self-renewal (By similarity). Can homodimerize. Binds to DNA. Expressed in spleen, lymph node, thymus, peripheral blood leukocytes, and fetal liver. Sumoylated with SUMO1. The disease is caused by variants affecting the gene represented in this entry.