Abstract
Objective
Our objective was to compare therapeutic response among patients with early-onset psoriasis (EOP) and late-onset psoriasis (LOP) receiving adalimumab, etanercept, infliximab, ustekinumab, or methotrexate in the Psoriasis Longitudinal Assessment and Registry (PSOLAR).
Methods
Patients were grouped by age of onset: EOP (age ≤ 40 years) or LOP (age > 40 years). Repeated-measures analysis with logistic regression was used to calculate the adjusted odds ratio (AOR; adjusted for baseline characteristics) for achieving a Physician's Global Assessment score of cleared/minimal (PGA 0/1) or a percentage of body surface area involved with psoriasis < 3% (%BSA < 3) or %BSA < 1 for all patients; similar sensitivity analyses were performed for each treatment group.
Results
Of 7511 patients, 5479 (72.9%) had EOP. The LOP group had a higher likelihood of achieving PGA 0/1 after treatment than did the EOP group in all patients (AOR 1.14 [95% confidence interval (CI) 1.05–1.25]; p = 0.0019); the same was true in subgroups of etanercept-treated (AOR 1.38 [95% CI 1.14–1.66]; p = 0.0010) and methotrexate-treated (AOR 1.62 [95% CI 1.16–2.26]; p = 0.0049) patients. No significant difference was found between the EOP and LOP groups with regard to the likelihood of achieving %BSA < 3 or %BSA < 1 among all patients. However, LOP patients were more likely than EOP patients to achieve %BSA < 3 or %BSA < 1 in subgroups treated with infliximab (AOR 1.45 [95% CI 1.09–1.93; p = 0.0103] and AOR 1.36 [95% CI 1.03–1.78; p = 0.0290], respectively) and etanercept (AOR 1.30 [95% CI 1.06–1.61; p = 0.0123] and AOR 1.34 [95% CI 1.09–1.64; p = 0.0053], respectively).
Conclusion
Our real-world data from PSOLAR indicate that there are differences in some patient characteristics between EOP and LOP and that patients with EOP are less likely than those with LOP to respond to certain systemic treatments. (ClinicalTrials.gov identifier: NCT00508547).
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