IGHA1 and focal segmental glomerulosclerosis: As shown in Fig 3, there was no significant difference (p-0.2497) in the serum Gd-IgA1 levels of patients with MCD/FSGS(6257.1±4248.6 ng/ml), lupus nephritis (4268.6±2310.2ng/ml) and membranous nephropathy(7568.8±4827.5 ng/ml).