Also, in a study on 21 kidney biopsies of cases suffering from lupus nephritis, MGN, and IgAN, the sensitivity of IF-F and IF on trypsin-digested tissue was reported to be similar concerning the detection of glomerular IgG, IgM, and IgA deposition. The gene discussed is CD40LG; the disease is idiopathic membranous glomerulonephritis.