C9DUPq21.11,DFNA51,DUP9q21.11,FHCA1,Friedreich ataxia region gene X104 (tight junction protein ZO-2),PFIC4,Tight junction protein 2,tight junction protein ZO-2,X104,ZO2,zona occludens 2,Zona occludens protein 2,zonula occludens protein 2.
Plays a role in tight junctions and adherens junctions.