Efficacy and safety of adalimumab when added to inadequate therapy for the treatment of psoriasis: results of PRIDE, an open-label, multicentre, phase IIIb study

K Papp, V Ho, H D Teixeira, B Guerette, K Chen, C Lynde
Journal of the European Academy of Dermatology and Venereology: JEADV 2012, 26 (8): 1007-13

BACKGROUND: Adalimumab is an effective treatment for chronic plaque psoriasis.

OBJECTIVE: To evaluate the safety and efficacy of adalimumab for psoriasis patients who did not adequately respond to prior psoriasis therapy.

METHODS: PRIDE (an Open-Label Access PRogram to Evaluate the Safety and Effectiveness of Adalimumab When Added to InaDEquate Therapy for the Treatment of Psoriasis) was a multicentre, Phase IIIb study in Canada. Patients with active moderate-to-severe plaque psoriasis who failed to respond to, or were intolerant of, prior therapies received adalimumab 80 mg at Week 0 followed by adalimumab 40 mg every other week Weeks 1 through 23. The primary efficacy measure was PASI (Psoriasis Area Severity Index) 75 response at Week 16. Secondary efficacy measures included PASI 90/100 and percentage change from baseline PASI score. Adverse events (AEs) and serious AEs were recorded.

RESULTS: A total of 203 patients were enrolled at 26 sites. Baseline characteristics were: male, 61.1%; mean age, 45.5 years; mean PASI score, 20.0; previous exposure to biologics, 38.4%. At Week 16, PASI 75/90/100 responses were achieved by 70.9%/49.3%/24.1% of patients, respectively. Mean percentage PASI score decrease from baseline to Week 16 was 79.5%. Mean percentage PASI improvement and response rates were maintained through Week 24. Nasopharyngitis and upper respiratory tract infection were the only AEs to occur in ≥5% of patients. Nine patients experienced serious AEs; four were considered possibly or probably related to adalimumab.

CONCLUSION: Adalimumab was safe, well-tolerated and effective for treatment of active plaque psoriasis in patients who had not adequately responded to prior therapy.

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