Cyclosporine therapy monitored with abbreviated area under curve in nephrotic syndrome

Stefano Rinaldi, Antonella Sesto, Paola Barsotti, Tullio Faraggiana, Francesco Sera, Gianfranco Rizzoni

Research output: Contribution to journalArticlepeer-review


Cyclosporin A (CsA) is an effective therapy for children with long-lasting nephrotic syndrome (NS). Long-term treatment can result in chronic CsA nephropathy (CsAN) and there is controversy concerning its incidence and severity. Trough levels are commonly used to monitor the drug concentration. We report a retrospective clinical and histological analysis of 18 children (12 males, 6 females) with steroid-dependent nephrotic syndrome (15 patients) and partially steroid-sensitive nephrotic syndrome (3 patients) treated with CsA for a long-term period (mean 4.9 years, range 2.2-6.9). Before CsA treatment all patients had normal creatinine clearance. CsA was started at a dose of 5 mg/kg per day administered orally in two divided doses and adjusted to maintain the mean CsA blood concentration between 250 and 350 ng/ml obtained from abbreviated area under the curve (AUC). A renal biopsy was performed after a mean period of 3.9 years (range 2.2-6.2) from the start of CsA treatment. Tubular, interstitial, and arteriolar lesions were evaluated in order to assess CsAN. The mean CsA dose and the mean CsA blood concentration were 4.4 mg/kg per day (range 3.6-5.8) and 276.6 ng/ml (range 162-346), respectively. No child had a worsening creatinine clearance during CsA treatment and follow-up after CsA discontinuation. If compared with the year before the start of CsA treatment, NS relapses and prednisone (PDN) dose significantly decreased during CsA treatment, 4/year versus 0.8/year (P

Original languageEnglish
Pages (from-to)25-29
Number of pages5
JournalPediatric Nephrology
Issue number1
Publication statusPublished - Jan 2005


  • Abbreviated area under the curve
  • Cyclosporine monitoring
  • Cyclosporine nephropathy
  • Nephrotic syndrome

ASJC Scopus subject areas

  • Nephrology
  • Pediatrics, Perinatology, and Child Health


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