Figure 1.

Clinical outcomes: the treatment response beyond 4 months after biopsy is uncommon. Treatment response was defined as dialysis independence, with eGFR>20 ml/min per 1.73 m², and without clinical sign of active vasculitis. Six of 16 were positive with anti–glomerular basement membrane antibody, and 6 had combined immune complex–mediated GN; the remaining 4 patients had membranoproliferative GN, cryoglobulin-associated necrotizing crescentic GN, fibrillary GN, and Takayasu vasculitis, respectively. ANCA-GN, ANCA-associated GN; GDCN, Glomerular Disease Collaborative Network; Tx, treatment.