Biologic Therapy in Psoriasis: Perspectives on Associated Risks and Patient Management

Background:

Previous publications have described practical considerations for initiating biologic therapy in psoriasis patients. However, most publications have focused on anti–tumor necrosis factor (TNF) therapy.

Objective:

To create an evidence-based, practical tool that provides guidance on patient management for all biologics currently approved in Canada and the United States.

Methods:

Psoriasis publications regarding safety issues in the initiation or monitoring of adalimumab, alefacept, etanercept, infliximab, or ustekinumab therapy were identified through a PubMed search. Phase III trials and open-label extensions (regardless of indication) and relevant guidelines from Health Canada were used to compile this review.

Results:

Although these biologic agents have demonstrated efficacy in patients with psoriasis and are generally considered safe and well tolerated, rare but serious safety issues (ie, demyelination, infection, tuberculosis, malignancy, lymphoma, cardiovascular outcomes, hepatitis, pregnancy, surgery, and vaccination) have been observed. Attention to specific aspects of patient management (ie, prescreening requirements, symptoms to watch for, appropriate treatment, and referrals) is required to mitigate risk.

Conclusion:

Much of the evidence regarding the long-term safety of these agents has been based on experience in other patient populations. However, it does serve to guide us in understanding the risks that may impact the management of psoriasis patients.

A refresher on herpes zoster, current status on vaccination, and the role of the dermatologist

BACKGROUND

Herpes zoster (HZ) and postherpetic neuralgia (PHN) have a significant impact on quality of life. PHN is often chronic and difficult to treat. Dermatologists have always been involved in making the diagnosis of these conditions and, most recently, teaching the need for early antiviral therapy.

OBJECTIVE

With the introduction of a new vaccine, HZ and its difficult-to-treat complication PHN can be prevented or minimized. Preventive medicine is important and has been supported by dermatologists with sun safety programs. Patients receiving biologics are at increased risk of developing zoster.

CONCLUSION

Dermatologists should embrace zoster vaccination and recommend routine vaccination of immunocompetent individuals > age 60 years, as well as patients of any age who are starting immunosuppressants, including biologics. Given that individuals over age 50 years are at risk for PHN and studies have shown that the vaccine's immunogenicity and safety are maintained in individuals age 50 to 59 years, vaccination in this age group may be considered. Some dermatologists may consider vaccinating their own patients, but most will likely recommend that vaccination be performed by their patients' primary care physicians.