Rituximab in Adult Minimal Change DiseaseMechanisms and Clinical Research Progress

Understanding Minimal Change Disease and Rituximab:

  • MCD is responsible for 10-15% of adult nephrotic syndrome cases.
  • Traditionally treated with corticosteroids, but relapses and steroid dependence necessitate alternative therapies.
  • RTX depletes B cells and modulates immune responses, making it a potential treatment for refractory MCD.

Clinical Findings on Rituximab in MCD:

  • Studies indicate that RTX effectively reduces relapse rates and steroid dependence in MCD patients.
  • A 2013 Kidney International study found that 65% of RTX-treated MCD patients achieved long-term remission.
  • Research published in BMC Nephrology (2021) reported an 88% remission rate among RTX-treated patients with steroid-dependent or frequently relapsing MCD.

The Role of External Medical Organizations:
The Kidney Disease: Improving Global Outcomes (KDIGO) guidelines now include RTX as an option for MCD, particularly in refractory cases. According to KDIGO, RTX therapy has demonstrated a remission induction rate of 65-100%, significantly reducing relapses and the need for additional immunosuppressants.

Therapeutic Strategies and Considerations:

  • RTX is commonly administered in one of three regimens:
    • Two-dose regimen: 1g per dose, given two weeks apart.
    • Four-dose regimen: 375 mg/m² weekly for four weeks.
    • B-cell guided regimen: 375 mg/m² with repeat doses based on CD19+ B cell counts.
  • Side effects are minimal, with studies reporting only mild adverse events in a minority of patients.

Conclusion and Future Perspectives:
While corticosteroids remain the primary treatment for MCD, RTX is increasingly recognized for its effectiveness in refractory cases. Further large-scale randomized controlled trials are needed to establish optimal dosing strategies and long-term safety.

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