Patient-reported Health-related Quality of Life with apremilast for psoriatic arthritis: a phase II, randomized, controlled study

Vibeke Strand, Georg Schett, Chiachi Hu, Randall M Stevens
Journal of Rheumatology 2013, 40 (7): 1158-65

OBJECTIVE: Apremilast, a specific inhibitor of phosphodiesterase 4, modulates proinflammatory and antiinflammatory cytokine production. A phase IIb randomized, controlled trial (RCT) evaluated the effect of apremilast on patient-reported outcomes (PRO) in psoriatic arthritis (PsA).

METHODS: In this 12-week RCT, patients with active disease (duration > 6 mo, ≥ 3 swollen and ≥ 3 tender joints) received apremilast (20 mg BID or 40 mg QD) or placebo. PRO included pain and global assessment of disease activity [visual analog scale (VAS)], Health Assessment Questionnaire-Disability Index (HAQ-DI), Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT-F), and Medical Outcomes Study Short-Form 36 Health Survey (SF-36) assessing health-related quality of life (HRQOL). Percentages of patients reporting improvements ≥ minimum clinically important differences (MCID) and correlations between SF-36 domains and pain VAS, HAQ-DI, and FACIT-F were determined.

RESULTS: Among the 204 randomized patients (52.5% men; mean age 50.6 yrs), baseline SF-36 scores reflected large impairments in HRQOL. Apremilast 20 mg BID resulted in statistically significant and clinically meaningful improvements in physical and mental component summary scores and 7 and 6 SF-36 domains, respectively, compared with no change/deterioration in placebo group. Patients receiving apremilast 20 mg BID and 40 mg QD reported significant improvements ≥ MCID in global VAS scores and FACIT-F versus placebo, and significant improvements in pain VAS scores. Moderate-high, significant correlations were evident between SF-36 domains and other PRO.

CONCLUSION: Apremilast resulted in statistically significant and clinically meaningful improvements in HRQOL, pain and global VAS, and FACIT-F scores.

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