Lupus nephritis (LN) is a serious and common manifestation of systemic lupus erythematosus (SLE), characterized by inflammation of the kidneys caused by autoantibody deposition in the glomeruli.1,2 It can lead to progressive renal damage, kidney failure, and increased morbidity if poorly controlled or left untreated.3,4
LN is classified by the International Society of Nephrology/Renal Pathology Society (ISN/RPS) into 6 histological classes (I-VI)3:
| Class | Description | 
|---|---|
| I | Minimal mesangial LN | 
| II | Mesangial proliferative LN | 
| III | Focal LN (active/chronic lesions in <50% glomeruli) | 
| IV | Diffuse LN (active/chronic lesions in ≥50% glomeruli) | 
| V | Membranous LN | 
| VI | Advanced sclerosing LN (≥90% globally sclerosed glomeruli) | 
*CRR was defined in the retrospective studies as achieving eGFR within 10% of baseline or ≥90 mL/min/1.73 m2) and low proteinuria (typically UPCR <0.5 g/g or 24-hr protein <0.5 g/d); one study applied modified ALMS and BLISS-LN criteria, requiring normal serum creatinine or estimated creatinine clearance and proteinuria ≤0.5 g/d, excluding urinary sediment, all within 2 years.8-10
 †Triple therapy is defined as immunosuppressants, steroids, and advanced therapy.2,13,14
 ‡As of September 2025, ACR and KDIGO guidelines do not include obinutuzumab.13,14
 §For the full 2024 ACR Lupus Nephritis Guidelines, please visit rheumatology.org/lupus-guideline.13
ACR=American College of Rheumatology; ALMS=Aspreva Lupus Management Study; BLISS-LN=Belimumab International Study in Lupus Nephritis; KDIGO=Kidney Disease: Improving Global Outcomes.
GAZYVA full Prescribing Information. South San Francisco, CA: Genentech, Inc.; 2025.
GAZYVA full Prescribing Information. South San Francisco, CA: Genentech, Inc.; 2025.
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Data on file. Genentech, Inc.
Data on file. Genentech, Inc.
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Data on file. REGENCY steroid taper plots. Genentech, Inc.
Data on file. REGENCY steroid taper plots. Genentech, Inc.
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Data on file. CSR CA41705 REGENCY Pharmacy Manual. Genentech, Inc.
Data on file. CSR CA41705 REGENCY Pharmacy Manual. Genentech, Inc.
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