Long-term safety experience of ustekinumab in patients with moderate to severe psoriasis (Part II of II): results from analyses of infections and malignancy from pooled phase II and III clinical trials.

Abstract

BACKGROUND:

Ustekinumab targets interleukin (IL)-12 and IL-23 in the treatment of moderate to severe psoriasis.

OBJECTIVE:

We sought to evaluate the impact of ustekinumab on infections and malignancies, both theoretical risks of blocking IL-12 and IL-23, in patients exposed up to 3 years.

METHODS:

Rates of infections and malignancies were evaluated in cumulative safety data from 3117 ustekinumab-treated patients across 4 studies.

RESULTS:

During the placebo-controlled periods, rates of overall infections per 100 patient-years were similar among placebo (121.0), ustekinumab 45-mg (145.7), and ustekinumab 90-mg (132.2) groups, with overlapping confidence intervals, and remained stable through 3 years in ustekinumab groups. Rates of serious infections during the placebo-controlled periods were similar between placebo (1.70) and 90-mg (1.97) groups, yet lower in the 45-mg group (0.49). Rates remained stable (90 mg) or decreased (45 mg) over time, and were comparable with those for the US psoriasis population based on a managed care database. Rates of malignancies during the placebo-controlled periods were comparable among groups (placebo: 1.70; 45 mg: 0.99; 90 mg: 0.98) and remained stable over time in ustekinumab groups. Rates of malignancies, excluding nonmelanoma skin cancer, were comparable with rates expected in the general US population based on the Surveillance, Epidemiology, and End Results database.

LIMITATIONS:

Controlled periods do not extend beyond 12 to 20 weeks. Only 1247 patients were treated for at least 2 years, to date. Comparator database populations may not fully represent the clinical trial population.

CONCLUSIONS:

The emerging safety profile of ustekinumab remains favorable and does not suggest increased rates of infection or malignancy through 3 years.

• Authors: Kenneth B Gordon, Kim A Papp, Richard G Langley, Vincent Ho, Alexa B Kimball, Cynthia Guzzo, Newman Yeilding, Philippe O Szapary, Steven Fakharzadeh, Shu Li, Ming-Chun Hsu, Kristian Reich
• Journal: Journal of the American Academy of Dermatology (J Am Acad Dermatol) Vol. 66 Issue 5 Pg. 742-51 (May 2012) ISSN: 1097-6787 [Electronic] United States
• PMID: 21978572 (Publication Type: Clinical Trial, Phase II, Clinical Trial, Phase III, Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2011 American Academy of Dermatology, Inc. Published by Mosby, Inc. All rights reserved.

Chemical References

• Antibodies, Monoclonal
• Antibodies, Monoclonal, Humanized
• Ustekinumab

Topics

• Adult
• Antibodies, Monoclonal (adverse effects, therapeutic use)
• Antibodies, Monoclonal, Humanized
• Dose-Response Relationship, Drug
• Double-Blind Method
• Drug Administration Schedule
• Drug-Related Side Effects and Adverse Reactions
• Female
• Follow-Up Studies
• Humans
• Infections (epidemiology, etiology)
• Long-Term Care
• Male
• Middle Aged
• Neoplasms (epidemiology, etiology)
• Psoriasis (diagnosis, drug therapy)
• Risk Assessment
• Safety Management
• Severity of Illness Index
• Time Factors
• Treatment Outcome
• Ustekinumab