Transcription factor (PubMed:29967452). Acts as a transcriptional activator by binding to promoter regions of target genes, such as PDCD4, PIK3IP1, MXD4, PNRC1, and RFX5 (PubMed:29967452, PubMed:34197623). Plays a role in natural killer (NK) cell maintenance and immunity (PubMed:29967452). May play a role in the process of ciliogenesis in the neural tube and neural tube closure (By similarity).