Table 1.

Comparison between Oxford classification and JHGC

1. Oxford classification: split system
M	Mesangial hypercellularity	≤ 0.5 (M0) or ≥ 0.5 (M1)
E	Endocapillary hypercellularity	Absent (E0) or present (E1)
S	Segmental sclerosis	Absent (S0) or present (S1)
T	Tubular atrophy/interstitial fibrosis	< 25% (T0), 26–50% (T1), or > 50% (T2)

2. Japanese histological grading classification: lumped system
Histological grade	No of lesions*/total no. of glomeruli	Active lesions only	Active lesion + chronic lesion	Chronic lesion only
H-grade I	0–24.9%	A	A/C	C
H-grade II	25–49.9%	A	A/C	C
H-grade III	50–74.9%	A	A/C	C
H-grade IV	75%	A	A/C	C

Active lesion (A) indicates cellular crescent and fibrocellular crescent; chronic lesion (C) indicates global sclerosis, segmental sclerosis, fibrous crescent.

JHGC, Japanese Histological Classification.

*Lesions.