Management of Lupus Nephritis

Diagnosis and Treatment Approach

The American College of Rheumatology recommends performing a renal biopsy to confirm the diagnosis, assess disease activity and chronicity, and guide appropriate immunosuppressive therapy for lupus nephritis, as it determines the specific histologic class of nephritis and dictates the intensity and type of immunosuppressive therapy required 1, 2, 3
Renal biopsy confirms the diagnosis, evaluates disease activity versus chronicity/damage, and determines prognosis and appropriate therapy in suspected lupus nephritis, with the histologic classification fundamentally changing treatment decisions 1, 2
The histologic classification (proliferative Class III/IV versus membranous Class V versus mixed patterns) guides treatment decisions, with proliferative disease requiring aggressive induction with cyclophosphamide or mycophenolate mofetil plus high-dose corticosteroids, while membranous disease may be managed less aggressively 1, 2, 3, 4

The 2024 KDIGO guidelines recommend combination immunosuppression as first-line therapy for proliferative lupus nephritis, including glucocorticoids plus either cyclophosphamide, mycophenolate mofetil, or calcineurin inhibitors 3
The APLAR consensus also recommends combination immunosuppression as first-line therapy, with triple immunosuppression with belimumab or voclosporin added to standard therapy showing superior efficacy in recent high-quality trials 3, 6
Maintenance therapy should continue for at least 36 months with mycophenolate mofetil or azathioprine to reduce renal flares 3

Lupus nephritis leads to end-stage renal disease in 10% of cases at 10 years, making early aggressive treatment essential to preserve renal function 3, 5
Patients with persistent anti-dsDNA antibodies and hypocomplementemia after treatment are at high risk for renal relapse and may require continuation of immunosuppressive therapy, although this is based on a general understanding of the disease rather than a specific cited reference in this context 1, 3