Efficacy and Safety of Ustekinumab in Korean Patients with Moderate-to-severe Psoriasis

Kim, Kyung O; Lee, Sang Hoon; Lee, Sung Yul; Whang, Kyu Uang; Park, Young Lip

Abstract

BACKGROUND
Psoriasis is a chronic, relapsing inflammatory disease that affects approximately 2~3% of the population worldwide and often requires lifelong care. Recent advances in understanding the immunogenesis of psoriasis has led to the development of biological agents that target specific immunological pathways. Ustekinumab is a human monoclonal antibody that binds to the p40 subunit common to interleukin-12 and 23, key cytokines in the pathogenesis of psoriasis.
OBJECTIVE
This study aims to address the efficacy and safety of ustekinumab in Korean patients with moderate-to-severe psoriasis.
METHODS
The clinical records of 32 consecutive patients treated with ustekinumab were reviewed retrospectively. Treatment effectiveness was estimated based on reported Psoriasis Area and Severity Index (PASI) 50, 75, and 90 response rates, defined as a > or =50%, > or =75%, or > or =90% reduction from baseline PASI scores, respectively. A stereotyped questionnaire was completed by the physician, and information about adverse events and quality of life was collected.
RESULTS
The average baseline PASI score was 25.7. Overall 38%, 56%, and 80% patients achieved PASI 75 response rates at weeks 4, 16, and 52 respectively. Thirteen patients (41%) experienced a mild adverse event such as upper respiratory infection, pruritus, urticaria, nasopharyngitis, headache, hyperglycemia, abnormal hepatic function, or arthralgia.
CONCLUSION
Ustekinumab provides an effective, safe, and well-tolerated alternative for the symptomatic treatment of Korean patients with moderate-to-severe psoriasis.