Classification of Emancipator for IgA Nephropathy and Henoch Schonlein Nephritis

Emancipator classified the histopathologic changes seen in IgA nephropathy and Henoch-Schonlein nephritis.

Requirement for the renal biopsy: 9 or more glomeruli

Parameters:

(1) glomerular changes other than crescents

(2) crescents

Glomerular Changes Other Than Crescents	Glomeruli with Crescents	Class
none	none	0
minimal	none	I
mesangial proliferation without extracapillary proliferation	none	II
mesangial proliferation with extracapillary proliferation	< 50%	III
mesangial proliferation with extracapillary proliferation	50-75%	IV
mesangial proliferation with extracapillary proliferation	> 75% of glomeruli	V
pseudomembranoproliferative glomerulonephritis	NA	VI

where:

• Classes II to V may or may not show endocapillary proliferation.

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