“…A biopsy showing predominant IgA deposition was performed in 31 (57%) of the 54 patients (7, 9, 10, 12, 14-16, 19, 20, 22, 23, 25, 26, 28, 29, 31, 32, 35, 37-39, 43-47, 50, 51, 53, 61 and 62): skin biopsy (n ¼ 15), renal biopsy (n ¼ 11), both skin and renal biopsy (n ¼ 5). Testing for IgG ANCA was negative in 14 patients with this examination (6,8,12,19,20,25,29,32,35,43,45,51,53,54).…”