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Ixekizumab post-marketing surveillance in Japanese patients with psoriasis and PsA

By Ella Dixon

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Apr 4, 2025

Learning objective: After reading this article, learners will be able to cite a new development in psoriasis.


 

Psoriasis is a chronic inflammatory disease that can be difficult to treat and is associated with significant disease burden, particularly in rarer forms of psoriasis such as generalized pustular psoriasis; which can be fatal if inadequately treated.

A multicenter post-marketing study was conducted from 2016 to 2022 to evaluate the efficacy and safety of ixekizumab in Japanese patients with psoriasis for up to 52 weeks, with the incidence of serious infections and malignancies measured for up to 3 years.1 

A total of 804 patients were included in the analysis, with 72.9%, 37.7%, 7.8%, and 3.7% having psoriasis vulgarispsoriatic arthritis, pustular psoriasis, and erythrodermic psoriasis, respectively (some patients had multiple subtypes).1 Results were published in The Journal of Dermatology by Torii et al.1

 

Key learnings

Ixekizumab demonstrated significant clinical effectiveness in treating moderate to severe psoriasis in Japanese patients. A high proportion of patients achieved PASI 75/90/100 responses, indicating near-complete or complete skin clearance.
Sustained efficacy was observed over the study duration, reinforcing ixekizumab as a viable long-term treatment option for psoriasis management. In addition, improvements were noted in DLQI scores from baseline to Week 52.
The safety profile was consistent with previous global studies. AEs were reported in 25.3% of patients. Common AEs included nasopharyngitis, injection-site reactions, and upper respiratory tract infections. No new safety signals were identified. 
These findings support ixekizumab as an effective biologic therapy for patients with psoriasis, aligning with international treatment guidelines, and suggest that utilizing early biologic intervention in eligible patients can lead to rapid disease control.

Abbreviations: AE, adverse event; DLQI, Dermatology Life Quality Index; PASI, Psoriasis Area and Severity Index.

References

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