Effects of adalimumab therapy on musculoskeletal manifestations and health-related quality of life in patients with active psoriatic arthritis

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Objectives Adalimumab, a fully human anti-tumor necrosis factor monoclonal antibody, was retrospectively evaluated for its effect on musculoskeletal manifestations and health-related quality of life in patients with psoriatic arthritis (PsA) during daily clinical practice.Methods Patients who initiated adalimumab therapy after March 2010 were followed for at least 24 weeks with the clinical outcome measures. Eleven patients, all men with a mean age of 45.4 years, had mean psoriasis durations of 16.2 and 8.4 years at baseline.Results After 24 weeks, 72.7, 63.6, and 45.5 % of the patients met the ACR 20, 50, and 70 response criteria, respectively, while 81.8 % achieved the PsA response criteria. Disease Activity Score using the 28-joint count and CRP declined from 3.2 ± 1.2 at baseline to 1.3 ± 0.4 at week 24 (P < 0.01). The Bath Ankylosing Spondylitis Disease Activity Index and Bath Ankylosing Spondylitis Functional Index scores also decreased significantly (both P values were <0.01). After 24 weeks, three out of eight dimensions of the Medical Outcomes Study 36-Item Short Form Health Survey and Physical Component Summary were significantly improved (all P values were <0.05).Conclusions Adalimumab exerted its effect as early as week 4, and it was sustained until the end of the 24-week observation period in the PsA patients.