Membranous nephropathy

(30%; CJASN 2017;12:938, JASN 2021;32:268):

Primary

• Anti-PLA2R 70%,
• THSD7A 5%,
• other (EXT1-2, NELL1, Sema3B)

Secondary

• infxn (HBV, HCV, HIV, syphilis)
• autoimmune (eg, SLE)
• carcinomas
• drugs (NSAIDs, penicillamine).