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Mycophenolate Mofetil for Severe IgA Vasculitis Nephropathy in Children: An Observational Study

Dmitry Samsonov1, Anna Zolotnitskaya2, Robyn Matloff3

  • 1Division of Nephrology, Department of Pediatrics, Maria Fareri Children's Hospital, New York Medical College, Valhalla, New York.

Kidney Medicine
|September 26, 2022
PubMed

Insights

Treatment with mycophenolate mofetil helps children with IgA vasculitis nephritis (IGAVN) achieve remission of nephrotic-range proteinuria. Proteinuria levels are key indicators for predicting remission time in these patients.

Area of Science:

  • Pediatric Nephrology
  • Immunology
  • Glomerular Diseases

Background:

  • IgA vasculitis nephritis (IGAVN) can lead to severe kidney complications like rapidly progressive glomerulonephritis and nephrotic-range proteinuria.
  • These complications are associated with a poorer prognosis in affected children.

Purpose of the Study:

  • To evaluate the efficacy of immunosuppressive treatment in children with IGAVN presenting with nephrotic-range proteinuria.
  • To assess the time to remission, resolution of hematuria, and long-term kidney function.

Main Methods:

  • Retrospective analysis of pediatric patients diagnosed with IGAVN, purpura, and nephrotic-range proteinuria between 2000 and 2018.
  • Treatment involved steroids and mycophenolate mofetil; outcomes included proteinuria remission, hematuria resolution, and glomerular filtration rate (GFR) at 12 months and last follow-up.

Main Results:

  • Twelve children (8 boys, 4 girls; mean age 7.5 years) were included. Initial mean urinary protein to creatinine ratio (UPC) was 12.5 mg/mg, and GFR was 90.7 mL/min/1.73 m².
  • All patients achieved proteinuria remission (UPC <0.3 mg/mg) and normalized kidney function (GFR 102.2 mL/min/1.73 m²) within 12 months.
  • At a mean follow-up of 33.5 months, all but one patient remained in remission, and all but one maintained normal GFR.

Conclusions:

  • Mycophenolate mofetil-based immunosuppression is effective in achieving remission for children with IGAVN and nephrotic-range proteinuria.
  • The magnitude of proteinuria is a significant predictor of the time required for remission.
  • Long-term monitoring is essential for patients with severe IGAVN.
Abstract

Keywords:
ChildrenIGA vasculitisnephritisnephrotic syndromepediatricproteinuriarenal failure

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