The membranous nephropathy group (Figure 22), focal and segmental glomerulosclerosis group (Figure 23), lupus nephritis group (Figure 24), IgA nephropathy group (Figure 25), control group (Figure 26), c-ANCA vasculitis group (Figure 27), and p-ANCA vasculitis group (Figure 28) all showed positive correlations between anti-C3aR antibody levels and anti-C5aR antibody levels. Here, C3AR1 is linked to lupus nephritis.