With imputation data after quality control, as can be seen from Fig. 1, RGS1 rs12564072 (9.5 kb 3′ of RGS1, p = 3.60 × 10−3), RGS1 rs77066951 (3.8 kb 3′ of RGS1,p = 4.20 × 10−3) showed significant associations with IgA nephropathy (exceeding P < 5 × 10−3), and RASGRP1rs7165274 (intronic, p = 7.52 × 10−3) showed nominal association signal with p approaching 5 × 10−3. Here, RGS1 is linked to IgA glomerulonephritis.