Tumor Necrosis Factor Inhibitors and Multiple Sclerosis: A Closer Look

With the advent of tumor necrosis factor (TNF) inhibitors, one of the major topics of discussion is the relationship of the drug class with new or worsening multiple sclerosis (MS). Exacerbation of previously quiescent MS and the onset of other demyelinating diseases such as optic neuritis have been reported in patients taking TNF inhibitors. Symptoms included paraesthesia, visual disturbance, and confusion.

Therefore, controversy surrounds the use of TNF-α inhibitors in patients who are more predisposed to developing MS, specifically first-degree relatives of MS patients. The American Academy of Dermatology guidelines for TNF inhibitors state the following: “Because there is an association between anti-TNF therapy and demyelinating diseases (ie, MS), TNF inhibitors should not be used in patients with MS or other demyelinating diseases; first-degree relatives of patients with MS have an increased risk of developing MS, with a sibling relative risk of between 18 and 36, evidence strongly suggests that TNF inhibitors should not be used in first-degree relatives of patients with MS.”

Mansouri et al (J Drugs Dermatol. 2015;14:876-878) presented data suggesting that the number needed to treat is at least an order of magnitude smaller than the number needed to harm across all comparisons of anti–TNF-α agents and first-degree relative relationships. Based on these data, the authors suggest that physicians could weigh the treatment options available and work closely with neurological colleagues when prescribing anti–TNF-α therapy in this patient population, which could be an alternative approach to practicing absolute prohibition of anti–TNF-α agents in patients who have a first-degree relative with MS.

What’s the issue?

This article presents interesting data concerning the risk-benefit of using TNF inhibitors in a potential at-risk population. We are fortunate to have many treatment options available, but in many cases, a TNF inhibitor may be preferable. How will this information affect your use of TNF inhibitors in patients with a first-degree relative with MS?

We want to know your views! Tell us what you think.