Subsequently, thrombospondin type-1 domain-containing 7A (THSD7A) [4], exostosin 1/2 (EXT1/2) [5], and neural epidermal growth factor-like 1 protein (NELL1) [6] were identified as causative antigens in MGN. Here, THSD7A is linked to idiopathic membranous glomerulonephritis.