Infections in Patients Receiving Multiple Sclerosis Disease-Modifying Therapies

Abstract

Purpose of Review

This paper will systemically review the risk of infections associated with current disease-modifying treatments and will discuss pre-treatment testing recommendations, infection monitoring strategies, and patient education.

Recent Findings

Aside from glatiramer acetate and interferon-beta therapies, all other multiple sclerosis treatments to various degrees impair immune surveillance and may predispose patients to the development of both community-acquired and opportunistic infections. Some of these infections are rarely seen in neurologic practice, and neurologists should be aware of how to monitor for these infections and how to educate patients about medication-specific risks. Of particular interest in this discussion is the risk of PML in association with the recently approved B cell depleting therapy, ocrelizumab, particularly when switching from natalizumab.

Summary

The risk of infection in association with MS treatments has become one of the most important factors in the choice of therapy. Balance of the overall risk versus benefit should be continuously re-evaluated during treatment.

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