Cardiometabolic Effects of Apremilast in Patients With Psoriatic Arthritis: A Prospective Cohort Study.

Objective: Psoriatic arthritis (PsA) is associated with metabolic and cardiovascular (CV) disease. Studies have suggested that treatment with apremilast is associated with weight loss and other cardiometabolic benefits. This study aimed to examine the effects of apremilast on body weight, body composition, and CV risk factors in patients with PsA.

Methods: This longitudinal, nonrandomized, multicenter trial included adults with active PsA initiating apremilast (30 mg twice daily after a step-up regimen). Patients were followed for 12 months, and measurements were done at baseline and repeated at weeks 26 and 52. Body composition, the primary outcome, was assessed using dual-energy x-ray absorptiometry. Secondary outcomes included disease activity (Disease Activity Score in 28 joints [DAS28] based on C-reactive protein [CRP]), blood pressure (BP), lipids, intima-media thickness, and glucose. Statistical analysis involved mixed models adjusted for relevant covariates.

Results: Forty-four patients were included, with a mean age of 56 (SD 11) years and a median BMI (kg/m²) of 28 (IQR 24-33). A total of 17 patients completed the study, whereas 27 discontinued due to ineffectiveness or side effects. After 1 year of apremilast, significant reductions were observed in multiple body mass measures, including total fat (-7.4 kg; P = 0.005) and android fat (-1.1 kg; P = 0.002). Lean mass remained stable. BP showed minor reduction, whereas lipids, intima-media thickness, and glucose levels did not change. Disease activity improved, with a significant decrease in DAS28-CRP (-0.6; P = 0.01). Android fat correlated most strongly with disease activity reduction (r 0.31; P = 0.004).

Conclusion: This study demonstrates that apremilast reduces fat mass in patients with PsA and suggests beneficial CV and metabolic effects, potentially reducing the risk of CV events.