Probable transcriptional regulator involved in developmental processes. May act as a transcriptional repressor (Potential). Interacts (via homeobox domain) with APBB1 (via PID domain 1). Expressed in brain; strongly reduced in post-mortem elderly subjects with Alzheimer disease. Sumoylated. Belongs to the teashirt C2H2-type zinc-finger protein family. The sequence differs from that shown due translation of a 3'-UTR region.