Analysis of Glomerular IgG Subclasses Switch in Idiopathic Membranous Nephropathy Classified by Glomerular Phospholipase A2 Receptor Antigen and Serum Antibody

Table 1

Predominance/codominance and EM stage in IMN.

IgG subclass	Pathological stage				values
	(%) pre/co-rate				Chi-square test	Linear-by-linear association test
	I ()	II ()	III ()	IV ()
IgG1	15 (40%)	42 (50%)	6 (38%)	10 (53%)	0.577	0.530
IgG2	1 (3%)	6 (7%)	0 (0%)	2 (11%)	0.452	0.450
IgG3	14 (37%)	15 (18%)	4 (25%)	2 (11%)	0.065	0.044
IgG4	34 (89%)	79 (94%)	15 (94%)	15 (79%)	0.186	0.281