Table 3: Oxford classification of renal biopsy scores in IgA nephropathy. Based on and modified from :Working Group of the International IgA Nephropathy Network and the Renal Pathology SocietyThe Oxford classification of IgA nephropathy: rationale, clinicopathological correlations, and classification. Kidney Int. 2009; 76: 534-45.

Morphologic Findings Definition Score
Mesangial cellularity [M] Segmental sclerosis [S] &n  Endocapillary hypercellularity [E] Tubulointerstitial atrophy/ Fibrosis [T] < 50% mesangial tufts with ≥ 3 cells > 50% mesangial tufts with ≥ 3 cells Absentspan> Present Absent Present 0-25% cortical area 26-50% cortical area >50% cortical M0 M1 S0 S1 E0 E1 T0 T1 T2T2