On August 13, 2024, the U.S. Food and Drug Administration (FDA) approved Nemluvio® (nemolizumab) for the treatment of adults with prurigo nodularis. Prurigo nodularis is a chronic skin disease in which the immune system attacks the nervous system, resulting in intensely itchy skin, nodules that can cover large areas of the body and impaired sleep quality. It affects up to 181,000 people in the United States. Topical therapies are often prescribed but may have limitations on duration of use or side effects. Developed by Galderma, Nemluvio® is monoclonal antibody that specifically inhibits signaling of IL-31, a protein produced by the body that drives the itching, inflammation and hardening of the skin associated with prurigo nodularis. Nemluvio® is injected under the skin and is administered every 4 weeks. It is supplied in a prefilled pen, and patients and caregivers may self-inject after proper training by their health care provider.
The approval of Nemluvio® is based on clinical trials involving more than 500 patients with prurigo nodularis. The results showed rapid reduction in itch observed at week 4 and a meaningful improvement in itch, sleep disturbance and skin nodule clearance at week 16. The most common side effects include headache and skin rashes, such as eczema.