- 作者：Robert Bissonnette ; Kim Papp ; Catherine Maari ; Yihong Yao ; Gabriel Robbie ; Wendy I. White ; Chenxiong Le ; Barbara White
- 刊名：Journal of the American Academy of Dermatology
- 出版年：2010
- 出版时间：March 2010
- 年：2010
- 卷：62
- 期：3
- 页码：427-436
- 全文大小：324 K
Background
Interferon-alfa (IFN-α) has been implicated in the pathogenesis of psoriasis.Objective
To evaluate the safety profile of MEDI-545, a fully human anti–IFN-α monoclonal antibody and to explore its effect on the involvement of type I IFN-α activity in the maintenance of established plaque psoriasis.
Methods
We conducted an 18-week, randomized, double-blind, placebo-controlled, dose-escalating study in 36 subjects with chronic plaque psoriasis. Subjects received one intravenous dose of MEDI-545 (0.3-30.0 mg/kg) or placebo. Study outcomes were safety profile, pharmacokinetics, immunogenicity, and clinical effects.
Results
There was no difference in adverse events between MEDI-545 and placebo. Two serious adverse events were reported; one drug-related hypotensive infusion reaction occurred in one subject in the 30.0 mg/kg MEDI-545 dose group, causing discontinuation of study drug in that subject and study dismissal of the other subjects in the same cohort; and a myocardial infarction occurred in one subject in the 10 mg/kg MEDI-545 dose group, which was considered to be unrelated to treatment. MEDI-545 was nonimmunogenic, had a half-life of 21 days, showed no significant inhibition of the type I IFN gene signature, and had no clinical activity.
Limitations
The study addressed only IFN-α and chronic psoriatic lesions.
Conclusion
The safety profile of MEDI-545 supports further clinical development. IFN-α does not appear to be significantly involved in the maintenance of established plaque psoriasis.