• A B Gottlieb, C E M Griffiths, V C Ho, M Lahfa, U Mrowietz, D F Murrell, J-P Ortonne, G Todd, R Cherill, I Marks, S Emady-Azar, C F Paul, and Multi-Centre Investigator Group.
• UMDNJ-Robert Wood Johnson Medica School, New Brunswick, NJ, USA. gottliab@umdnj.edu
• Br. J. Dermatol. 2005 Jun 1;152(6):1219-27.

BackgroundThere is a need for safe and effective alternative treatments for patients with moderate to severe psoriasis.ObjectivesPimecrolimus is a calcineurin inhibitor that is being investigated in oral form for the treatment of psoriasis.Patients And MethodsA double-blind, randomized, parallel-group, dose-finding study was performed. Healthy adult outpatients with moderate to severe chronic plaque-type psoriasis (n = 143) were randomized to receive oral placebo or pimecrolimus 10 mg, 20 mg or 30 mg twice daily (b.d.) for 12 weeks.Main Outcome MeasuresThe Psoriasis Area and Severity Index (PASI) was used to assess clinical severity of psoriasis. Results were analysed at weeks 7 (primary endpoint) and 13. Safety was assessed by monitoring all adverse events, laboratory investigations (blood chemistry, urinalysis, haematology) and physical examinations.ResultsThe change from baseline in PASI at week 7 showed a dose-dependent effect. The differences between each of the two higher doses of pimecrolimus and placebo were statistically significant (P < 0.001; ANOVA). The mean percentage decreases from baseline in PASI in the placebo group and pimecrolimus 10 mg, 20 mg and 30 mg b.d. groups at week 7 were 3.1%, 22.2%, 51.3% and 54.0%, respectively. Most adverse events were of mild or moderate severity. The only adverse event to show a dose-response relationship was a transient feeling of warmth. No clinically relevant effects on laboratory parameters were observed, and no increase in skin infection with pimecrolimus was seen.ConclusionsOral pimecrolimus produces a dose-dependent reduction in psoriasis severity, with doses of 20 mg and 30 mg b.d. being the most effective and well tolerated.

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