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Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
Published on: June 8, 2022
[Treating lupus nephritis: guideline from the Italian Society of Nephrology]
P Stratta1, C Canavese, A Lupo
1Italian Society of Nephrology - Italy.
Insights
Immunosuppressive agents like cyclophosphamide and azathioprine, combined with steroids, can reduce mortality and slow lupus nephritis progression. Further research is needed for new treatments.
Area of Science:
- Nephrology
- Immunology
- Rheumatology
Context:
- Lupus nephritis (LN) is a severe complication of systemic lupus erythematosus.
- Current treatment guidelines for LN rely on systematic reviews of randomized controlled trials (RCTs).
- Evidence for therapeutic interventions in LN is synthesized based on available RCT data.
Purpose:
- To present evidence on lupus nephritis treatment options based on systematic reviews of RCTs.
- To summarize the efficacy and safety of different therapeutic strategies for LN.
- To inform clinical practice and identify areas for future research in LN management.
Summary:
- Combining cyclophosphamide (CyA) and steroids for induction therapy in LN patients may reduce serum creatinine doubling risk compared to steroids alone, but carries a risk of ovarian failure.
- Azathioprine (Aza) combined with steroids significantly lowers all-cause mortality risk in LN patients compared to steroids alone.
- No significant survival benefits are proven for plasma exchange with CyA or Aza, and varying CyA doses show no significant differences in renal or survival outcomes.
Impact:
- Available evidence supports the use of immunosuppressive agents to reduce mortality and slow renal disease progression in LN.
- The findings highlight the need for further studies on novel immunosuppressive agents, such as mycophenolate mofetil, for severe LN cases.
- This guideline contributes to evidence-based management of lupus nephritis, guiding clinicians towards optimal therapeutic choices.
Background:
The current 3rd edition of the Italian Society of Nephrology guidelines has been drawn up to summarize evidence of key intervention issues on the basis of systematic reviews (SR) of randomized trials (RCT) or RCT data only. In the present guideline, evidence of lupus nephritis (LN) treatment is presented.
Methods:
SR of RCT and RCT on different therapeutic options for LN were identified referring to a Cochrane Library and Renal Health Library search (2005 update).
Results:
One SR of 25 RCT and 6 further RCT were available to address this issue. Methodological quality of available RCT was suboptimal according to current methodological standards. In LN patients, combining cyclophosphamide (CyA) and steroids as induction therapy results in a reduced risk of serum creatinine doubling compared to steroids alone, although there is no evidence of significant survival advantage and risk of ovarian failure was demonstrated (evidence from SR). The association of azathioprine (Aza) and steroids significantly reduces the risk of all-cause mortality compared to steroids alone (evidence from SR). No significant survival advantages from the association of plasma exchange and CyA or Aza are proven (evidence from SR). No significant differences on renal and survival endpoints are demonstrated with different dosing of CyA (evidence from RCT).
Conclusion:
In LN patients available evidence supports the hypothesis that immunosuppressive agents reduce the risk of all-cause mortality and the risk of progressive renal disease. Further studies are necessary to test new immunosuppressive agents such as mycophenolate mofetil in severe LN patients.
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