Urinary MCP-1 levels were significantly higher in patients with proliferative glomerulonephritis (IgA and mesangioproliferative) than in those with non-proliferative forms of glomerulonephritis (membranous, FSGS, and MCN), (0.061 (IQ 0.032–0.133) mg/mmol creatinine vs. 0.039 (IQ 0.027–0.085) mg/mmol creatinine, p = 0.049 with Bonferroni-Holm correction; (Figure 1), and both had significantly higher urine MCP-1 concentrations than healthy controls: 0.01 mg/mmol creatinine (IQ 0.008–0.023, p<0.001 with Bonferroni-Holm correction (Figure 1). The gene discussed is CD79A; the disease is proliferative glomerulonephritis.