AI Article Synopsis

  • This study tested rituximab (RTX) on patients with primary membranous nephropathy (PMN) who were dependent on calmodulin inhibitors (CNIs) and not fully in remission.
  • Among 36 patients, those who were drug-dependent showed a significant reduction in proteinuria and improved remission rates after 12 months of RTX therapy, with complete remission increasing from 10% to 70%.
  • The results indicated that RTX not only helped patients overcome CNI dependency but also led to significant immunological improvements while minimizing the risks of adverse effects.

Article Abstract

Background: This study evaluated the efficacy of rituximab (RTX) in primary membranous nephropathy (PMN) patients with incomplete remission and drug dependence after long-term use of calmodulin inhibitors (CNIs). It aims for complete clinical and immunological remission, and cessation of CNI dependence.

Methods: Thirty-six patients were enrolled in the study with two groups: drug-dependent and partial remission or immune non-remission group. Both groups underwent RTX therapy with gradual CNI tapering to end CNI dependency and induce complete remission. The primary outcome was overcoming CNI dependency and achieving complete remission after 12 months of RTX therapy. Secondary outcomes included immunological remission and recurrence rates.

Results: The drug-dependent group (20 patients) achieved significant proteinuria reduction compared to the partial remission or immune non-remission group (16 patients) (=0.016). After 12 months of RTX treatment, all drug-dependent patients overcame CNI dependency (average withdrawal period: 5.3 ± 3.7 months), with complete remission rates increased from 10% to 70.0% and complete immunological remission rates rose from 35.0% to 90.0%. In the partial remission or immune non-remission group, 14 patients discontinued CNI (average period: 4.6 ± 4.5 months), with complete remission rates increasing from 5.0% to 68.8% and complete immunological remission rates from 6.3% to 68.8%. During follow-up, serum albumin increased, and anti-PLA2R antibodies, 24-hour proteinuria, and CD19 cell numbers reduced, while creatinine remained stable. Three patients relapsed, four encountered adverse events, and no malignancies or other fatal adverse events were reported.

Conclusions: RTX effectively achieves complete clinical and immunological remission in PMN patients dependent on or partially responsive to long-term CNI therapy, reducing recurrence and minimizing prolonged immunosuppressive therapy risks.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11688482PMC
http://dx.doi.org/10.3389/fimmu.2024.1504646DOI Listing

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