The biomarker results from the Table 2 as follows; serum and urine anti-PLA2R antibodies (Ab) were detected in 13 (27.7%) of primary MGN subjects and 1 (4.5%) for serum and urine secondary MGN (due to hepatitis B virus infection) respectively. This evidence concerns the gene PLA2R1 and idiopathic membranous glomerulonephritis.