Membranous Nephropathy Clinical Trials

• Patients with an indication for initial diagnostic PBR on native kidney

• 18 ans ≥ Age ≤ 90 ans

• Affiliation to french health insurance

• Patient having given consent

⁃ For the ANCA vasculitis group:

⁃ • Diagnosis of ANCA vasculitis retained on renal biopsy with ANCA anti-proteinase 3 (PR3) or ANCA anti-myeloperoxidase (MPO)

⁃ For the control groups:

⁃ • Diagnosis retained after the renal biopsy

• Interstitial Nephritis

• Or glomerular nephropathy such as minimal change nephropathy

• Or Segmental hyalinosis in itscollapsing form

• Or Extramembranous Glomerulopathy,

• Or glomerulopathy with mesangial IgA deposits

• Or diabetic nephropathy.