These include LOXL2, which plays a role in fibrogenesis in PSC and IgG4-RD (67), SLAMF7 which is expressed highly on PBs and CTLs in IgG4-RD (59, 60) and CD38 which is expressed on expanded PBs in IgG4-RD (34, 58, 132, 152). The gene discussed is SLAMF7; the disease is immunoglobulin G4-related sclerosing disease.