MPO-ANCA GN associates with decreased fraction of normal glomeruli and glomerular lesions are equally observed in ANCA GN subtypes. (A) Association between MPO-ANCA GN and glomerular findings are shown by heatmap reflecting mean values of Spearman’s ρ, asterisks (*) indicate p < 0.05. (B) The scatter dot plots represent medians and IQR with individual data points summarizing association between MPO-ANCA GN and fraction of normal glomeruli. The Mann-Whitney U-test was used to determine differences in medians and asterisks indicate ** p < 0.01. ANCA, antineutrophil cytoplasmic antibodies; GN, glomerulonephritis; IQR, interquartile range; MPO, myeloperoxidase; PR3, proteinase 3.