THSD7A and infection: As an autoimmune disease, approximately 75% of cases are IMN, which is mainly associated with the antiphospholipase A2 receptor (anti-PLA2R) antibody and thrombospondin type 1 domain-containing 7A (THSD7A) [4, 5], as well as the secondary causes, including infection, autoimmune disease, malignancies, and drugs [3, 6].