Sep. 30, 2025 -- Novartis announced today that Rhapsido® (remibrutinib) received US Food and Drug Administration (FDA) approval as an oral treatment for adult patients with chronic spontaneous urticaria (CSU) who remain symptomatic despite H1 antihistamine treatment. Rhapsido is a pill taken twice daily and does not require injections or lab monitoring. It is the first FDA-approved Bruton’s tyrosine kinase inhibitor (BTKi) for CSU. Rhapsido helps to inhibit the release of histamine and other proinflammatory mediators by targeting BTK, offering a unique approach to CSU treatment.
The FDA approval of Rhapsido in CSU is based on results from the Phase III REMIX-1 (NCT05030311) and REMIX-2 (NCT05032157) clinical trials in patients who remained symptomatic on second-generation H1 antihistamines. Rhapsido demonstrated superiority in change from baseline versus placebo in itch (ISS7), hives (HSS7), and weekly urticaria activity (UAS7) at Week 12. Significantly more patients treated with Rhapsido versus placebo achieved well-controlled disease (UAS7≤6) as early as Week 2 and at Week 12, and about one-third of patients achieved complete absence of itch and hives at Week 12.
Novartis has completed regulatory submissions for Rhapsido for the treatment of CSU across many countries, including in the European Union, Japan, and China, with priority review granted in China.
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