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Importance Clinical characteristics associated with treatment response to biologics in patients with psoriasis have never been systematically investigated. Objective To evaluate the association between patient clinical characteristics and the effectiveness of biologics in treating psoriasis. Data Sources PubMed, Embase, and Web of Science were searched from their inception through April 2022. Studies in English language that reported response to biologic treatment at approved doses in patients with psoriasis in relation to their clinical characteristics were included. In addition, eligible studies were identified through a search of the reference lists of the included studies. Study Selection We only included studies that reported treatment outcomes as Psoriasis Area and Severity Index (PASI) 75 or PASI 90 after 12, 26, and/or 52 weeks of treatment. Both observational studies and randomized clinical trials (RCTs) were considered. Two independent authors conducted the screening process, and 107 studies were assessed for eligibility. Data Extraction and Synthesis The Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guidelines were followed. Relevant data were extracted independently by 2 authors. Data were pooled using random-effects models. RCTs and observational studies were pooled in separate analyses. Data were analyzed from June 1, 2023, to August 1, 2023. Main Outcomes and Measures The primary outcome was PASI 90 at 26 weeks (6 months). Before data collection began, an investigation of the association between the main (and secondary) outcomes and several clinical characteristics was planned. Results Overall, 40 studies with a total of 21 438 patients were included. Older age (odds ratio [OR], 0.99; 95% CI, 0.98-1.00), previous exposure to biologics (OR, 0.44; 95% CI, 0.29-0.67), higher body mass index (BMI) (OR, 0.96; 95% CI, 0.94-0.99), previous smoking (OR, 0.81; 95% CI, Importance: Clinical characteristics associated with treatment response to biologics in patients with psoriasis have never been systematically investigated. Objective: To evaluate the association between patient clinical characteristics and the effectiveness of biologics in treating psoriasis. Data Sources: PubMed, Embase, and Web of Science were searched from their inception through April 2022. Studies in English language that reported response to biologic treatment at approved doses in patients with psoriasis in relation to their clinical characteristics were included. In addition, eligible studies were identified through a search of the reference lists of the included studies. Study Selection: We only included studies that reported treatment outcomes as Psoriasis Area and Severity Index (PASI) 75 or PASI 90 after 12, 26, and/or 52 weeks of treatment. Both observational studies and randomized clinical trials (RCTs) were considered. Two independent authors conducted the screening process, and 107 studies were assessed for eligibility. Data Extraction and Synthesis: The Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) reporting guidelines were followed. Relevant data were extracted independently by 2 authors. Data were pooled using random-effects models. RCTs and observational studies were pooled in separate analyses. Data were analyzed from June 1, 2023, to August 1, 2023. Main Outcomes and Measures: The primary outcome was PASI 90 at 26 weeks (6 months). Before data collection began, an investigation of the association between the main (and secondary) outcomes and several clinical characteristics was planned. Results: Overall, 40 studies with a total of 21438 patients were included. Older age (odds ratio [OR], 0.99; 95% CI, 0.98-1.00), previous exposure to biologics (OR, 0.44; 95% CI, 0.29-0.67), higher body mass index (BMI) (OR, 0.96; 95% CI, 0.94-0.99), previous smoking (OR, 0.81; 95% CI, 0.67-0.98), and current smoking (OR, 0.78; 9

Background Psoriasis is associated with several comorbidities and patients with psoriasis are more often obese than individuals without psoriasis. The excess disease burden is important to consider in choice of and response to treatment at the individual level. Objective To investigate whether patient characteristics differ across biologics for patients initiating biologic therapy and for patients still on biologic therapy after 1 year. Also, to quantify and compare the use of topical therapy among patients still on biologic therapy after 1 year. Methods This nationwide cohort study compared characteristics of patients prescribed adalimumab, etanercept, infliximab, secukinumab or ustekinumab for treatment of psoriasis by using data from the Danish registries. Results In the ustekinumab group, patients were younger and fewer had psoriatic arthritis. Patients treated with secukinumab and ustekinumab were less frequently co-treated with conventional systemics and topical therapy. All other patient characteristics such as sex, smoking and comorbidities other than psoriatic arthritis were similar across the biologic cohorts. Conclusion These results highlight the need to better understand which factors to consider when prescribing biologics to patients with psoriasis., Background: Psoriasis is associated with several comorbidities and patients with psoriasis are more often obese than individuals without psoriasis. The excess disease burden is important to consider in choice of and response to treatment at the individual level. Objective: To investigate whether patient characteristics differ across biologics for patients initiating biologic therapy and for patients still on biologic therapy after 1 year. Also, to quantify and compare the use of topical therapy among patients still on biologic therapy after 1 year. Methods: This nationwide cohort study compared characteristics of patients prescribed adalimumab, etanercept, infliximab, secukinumab or ustekinumab for treatment of psoriasis by using data from the Danish registries. Results: In the ustekinumab group, patients were younger and fewer had psoriatic arthritis. Patients treated with secukinumab and ustekinumab were less frequently co-treated with conventional systemics and topical therapy. All other patient characteristics such as sex, smoking and comorbidities other than psoriatic arthritis were similar across the biologic cohorts. Conclusion: These results highlight the need to better understand which factors to consider when prescribing biologics to patients with psoriasis.