Abstract
ABSTRACTBackground: Limited information is available from real-life studies evaluating the long-term efficacy and drug retention of ustekinumab.Research design and methods: Data from 378 patients with moderate-severe psoriasis were retrospectively analyzed. Over 8 years, disease severity and treatment response were evaluated using the PASI score. Predictors of PASI response were evaluated by logistic regression. Ustekinumab retention rate was calculated by the Kaplan–Meier method.Results: Over the 8 years, >80% of patients achieved a PASI score of <3 and PASI 75, 90 and 100 response was achieved in 76.2%, 61.9% and 57.1% of patients, respectively. Predictor variables for improved PASI response (after 2 years) were HLA-C*06-POS patients, female gender and BMI <30 Kg/M2. The 2-year retention rate was 81% and 59% after 8 years with mean retention rate of 5.4 years. Improved retention rate was observed in patients positive for the HLA-C*06 allele (3.7 vs. 2.5 years, p = 0.005) and female gender (3.7 vs. 3.3 years, p = 0.06), with no significant difference observed in other patient groups. Ustekinumab was generally well tolerated without evidence of cumulative toxicity or organ toxicity.Conclusion: The long-term use of ustekinumab was observed to be effective and safe in patients with moderate-severe chronic psoriasis in a real world-setting.
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