Abstract
The Psoriasis Area and Severity Index (PASI) 100 response rate after treatment with biologics is reportedly lower in Asians than non-Asians. Large-scale studies evaluating predictors of PASI100 response in Korean patients with psoriasis are yet to be conducted. To identify predictors of patients achieving PASI100 response after 48-52 weeks of treatment with a biological agent. We retrospectively reviewed the medical records of 145 patients with psoriasis treated with a single biological agent for over one year. Clinical features were compared between super-responders (defined as achieving PASI100 at 48-52 weeks) and non-super-responders. Among the patients included in the study, 61 (42.1%) were super-responders. No statistical difference in demographics and face, scalp, or nail involvement was observed. However, the mean body mass index (BMI) and baseline PASI were lower in super-responders (24.3kg/m2, 14.3) than in non-super-responders (26.1kg/m2, 16.2). There were more biologically naïve patients among the super-responders (85.2%) than the non-super-responders (67.9%). In Korean patients with moderate-to-severe psoriasis, a better PASI100 response is expected for patients who are biologically naïve with a relatively lower baseline BMI and PASI.
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