THSD7A and idiopathic membranous glomerulonephritis: [3] found that about 10% patients with IMN had circulating autoantibodies to THSD7A but not to PLA2R, THSD7A maintained positive staining in idiopathic membranous glomerulopathy by immunofluorescence and immunohistochemical analyses but not in other glomerular diseases or healthy controls.