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Minimal change nephrotic syndrome

Last edited: 4/22/2026

Overview

Minimal change nephrotic syndrome (MCNS) is a common cause of nephrotic syndrome in children, characterized by heavy proteinuria, hypoalbuminemia, hyperlipidemia, and often a normal kidney biopsy appearance under light microscopy, requiring immunofluorescence or electron microscopy for confirmation. 1

Diagnosis

  • Key Criteria: Proteinuria ≥40 mg/h/m2, serum albumin ≤2.5 g/dL 1
  • Recommended Tests: Renal biopsy showing minimal changes under light microscopy, confirmed by electron microscopy or immunofluorescence 1
  • Grading: Not typically graded; diagnosis relies on histopathological findings 1

    • Management

  • First-line Treatment: Prednisone (dose and duration vary; typically initial dose of 60 mg/m2/day for 4 weeks, then tapered) 1
  • Adjunctive Treatments:
    • - Relapse Prevention: May include alternate-day prednisone maintenance or calcineurin inhibitors like cyclosporine 1 - Infection Prevention: Close monitoring and prophylactic measures due to increased infection risk in non-responders 1

    Special Populations

  • Pediatrics: MCNS predominantly affects children; mortality is rare but higher in non-responders or those with relapse 1
  • Comorbidities: Non-response to initial prednisone therapy or relapse increases risk of severe outcomes including infection and chronic renal failure 1

    • Key Recommendations

  • Initiate treatment with prednisone in children diagnosed with MCNS 1 (Evidence: Strong)
  • Closely monitor patients for response to prednisone; non-responders or those with relapse require further evaluation and potential adjunctive therapy 1 (Evidence: Moderate)
  • Implement stringent infection prophylaxis in pediatric patients, especially those who do not respond to initial prednisone therapy 1 (Evidence: Moderate)

    • References

    1 . Minimal change nephrotic syndrome in children: deaths during the first 5 to 15 years' observation. Report of the International Study of Kidney Disease in Children. Pediatrics 1984. link

    Original source

    1. [1]
      Minimal change nephrotic syndrome in children: deaths during the first 5 to 15 years' observation. Report of the International Study of Kidney Disease in Children. Pediatrics (1984)
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