Probable transcription factor. Widely expressed in adult with highest levels in heart. Expressed in fetal brain (in neurons of hippocampus, cortex, mediodorsal and ventrolateral thalamic nuclei, putamen, cerebellum and brainstem). In fetal brain of the 24th gestational week. Lacks two zinc finger domains. Major isoform with isoform 2. Lacks two zinc finger domains. Major isoform with isoform 1. Belongs to the sal C2H2-type zinc-finger protein family.