FDA Approves Ixekizumab (Taltz) for Nonradiographic Axial Spondyloarthritis

Christopher Palmer

June 01, 2020

The Food and Drug Administration has extended approval of ixekizumab (Taltz) to the treatment of nonradiographic axial spondyloarthritis (nr-axSpA), according to a press release from its manufacturer, Eli Lilly. Specifically, this supplemental biologics license application refers to nr-axSpA with objective signs of inflammation.

The monoclonal interleukin-17A antagonist has three other indications, including ankylosing spondylitis in adults, psoriatic arthritis in adults, and plaque psoriasis in adults and children aged 6 years and older. It is the first IL-17A antagonist to receive FDA approval for nr-axSpA.

Approval for this indication was based on the phase 3, randomized, double-blind COAST-X trial, which put 96 nr-axSpA patients on 80-mg injections of ixekizumab every 4 weeks and 105 on placebo.

After 52 weeks, ixekizumab was superior on the trial's primary endpoint: 30% of patients had achieved a 40% improvement in Assessment of Spondyloarthritis International Society response criteria (ASAS 40), compared with 13% of patients on placebo (P = .0045).

Warnings and precautions for ixekizumab include considering potentially increased risk of infection and inflammatory bowel disease, as well as evaluating patients for tuberculosis before treatment. The most common adverse reactions (≥1%) are injection-site reactions, upper respiratory tract infections, nausea, and tinea infections.

The safety profile for ixekizumab among nr-axSpA patients is mostly consistent with that seen among patients receiving it for other indications, according to Lilly. The full prescribing information is available on Lilly's website.

This article originally appeared on MDedge.com.

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