Any progressive familial intrahepatic cholestasis in which the cause of the disease is a mutation in the TJP2 gene. The disease is Monarch Disease Ontology id MONDO_0014381 (cholestasis, progressive familial intrahepatic, 4). Also known as: PFIC4, TJP2 deficit, TJP2 progressive familial intrahepatic cholestasis, cholestasis, progressive familial intrahepatic, type 4, progressive familial intrahepatic cholestasis caused by mutation in TJP2, progressive familial intrahepatic cholestasis type 4.