Changes in nephritis classification (ISN/RPS) from first to second biopsies
| Baseline biopsy | Repeated biopsy I/II or III/IV C (n=28) | III/IV A or A/C±V (n=20) | V (n=19) |
|---|---|---|---|
| III A or A/C (=21) | 12 | 8* | 1 |
| IV A or A/C (n=27) | 14 | 9 | 4 |
| V (n=10) | 1 | 0 | 9 |
| III–IV/V (n=9) | 1 | 3 | 5 |
*Including one patient with findings of vasculitis on repeated biopsy.
A, with active lesions; A/C, with both active and chronic lesions; C, with chronic lesions; ISN/RPS, International Society of Nephrology/Renal Pathology Society classification.