In addition, we recently reported that in cytomegalovirus (CMV)-positive AH obtained from Posner–Schlossman syndrome (PSS) patients, one of the major SOAG subtypes, the expression of ATX and TGF-β1 was upregulated, and the levels of ATX and TGF-β1 in AH were correlated significantly with each other10. Here, ENPP2 is linked to peeling skin syndrome.