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  • Title: Long-term experience with etanercept in psoriatic arthritis patients: a 3-year observational study.
    Author: Mazzotta A, Esposito M, Schipani C, Chimenti S.
    Journal: J Dermatolog Treat; 2009; 20(6):354-8. PubMed ID: 19954392.
    Abstract:
    OBJECTIVE: To evaluate the clinical efficacy and tolerability of etanercept in the treatment of active and progressive psoriatic arthritis (PsA) in patients who have previously demonstrated an inadequate response to standard treatments, such as disease-modifying anti-rheumatic drugs (DMARDs) and non-steroidal anti-inflammatory drugs (NSAIDs). METHODS: An open-label, non-controlled, prospective study was conducted including 32 patients affected by PsA with variable skin involvement who had responded inadequately to at least two DMARDs. Patients received etanercept subcutaneously administered as monotherapy at the dosage of 50 mg twice weekly for 12 weeks followed by 25 mg twice weekly. Clinical response was evaluated using the EULAR (European League Against Rheumatism) disease activity score (DAS) in 28 joints (DAS-28) and the Psoriasis Area and Severity Index (PASI). The percentage improvement in DAS-28 and the proportion of patients achieving a PASI improvement from baseline of between 50% and 75% (PASI 50), > 75% (PASI 75) and > 90% (PASI 90) were analysed as primary endpoints. RESULTS: Twenty-seven (27/32) patients (84.3%) completed 3 years (144 weeks) of continuous treatment, while 5/32 (15.6%) patients were withdrawn from the study. At week 144, a significant improvement in DAS-28 was registered with a reduction in mean DAS-28 from 5.3 at baseline to 1.8, while 25/27 patients (92.5%) achieved PASI 75 with a mean PASI score of 0.7; the mean pain visual analogue scale (pain-VAS) score decreased from 64.2 at baseline to 2 at week 144, corresponding to an improvement of 94.7%. CONCLUSIONS: Etanercept is a safe and effective agent in the long-term management of PsA patients. After 3 years of continuous treatment, symptoms were under control in the majority of patients and there was a low level of disease activity.
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