Apremilast survival and reasons for discontinuation in psoriasis: five-year experience from a Greek tertiary care centre

Abstract

Introduction: Drug survival is an indirect measure of efficacy and safety and its post-marketing assessment using real-life data is invaluable. Objectives: To investigate the survival of apremilast in a cohort of psoriasis patients treated with apremilast in a Greek hospital. Methods: A retrospective cross-sectional study examined adult psoriasis patients receiving apremilast (March 2016 to January 2021). Primary endpoint was the cumulative survival probability at 52 weeks. Kaplan-Meier analysis was used to calculate survival probability. Cox regression analysis was performed to investigate potential risk factors for apremilast discontinuation. Results: 102 patients (29.4% females) with a mean age of 55.94 years (Standard Deviation 15.21) were included. 65 patients (63.7%) had discontinued treatment by lock date: 19 (18.6%) due to lack of efficacy, 24 (23.5%) due to loss of efficacy, 15 (14.7%) due to adverse reactions, and 7 (6.86%) due to other reasons. Cumulative survival probability at 52 weeks was 52.1%. Median survival time for all reasons for discontinuation was 58 weeks 95%Confidence Interval (40.02, 75.98). Conclusions: Approximately half of patients remained on apremilast after a year of treatment. Secondary drug failure was the most common reason for discontinuation.

Keywords

• psoriasis
• apremilast
• survival
• discontinuation
• Greece