HAVCR2 and autoimmune disease: These studies demonstrate that Tim3 is involved in pathogenesis; thus, Tim3 may be a potential therapeutic target for these diseases.10 Membranous nephropathy (MN) is a serious autoimmune disease and one of the main causes of adult nephrotic syndrome, which can lead to end‐stage renal failure.11 In addition, the role of sTim3 in MN has not been thoroughly studied.