Patients with chronic spontaneous urticaria who remain symptomatic despite H1 antihistamine treatment now have a new oral treatment option, with the U.S. FDA’s approval of Novartis AG’s Rhapsido (remibrutinib), a Bruton’s tyrosine kinase inhibitor administered by pill twice daily.
Celldex Therapeutics Inc. will not advance barzolvolimab (CDX-0159, barzo) in eosinophilic esophagitis (EoE) after taking a look at top-line data from the ongoing phase II effort. The study met its primary endpoint, proving barzo’s efficacy in depleting mast cells in the gastrointestinal (GI) tract, but this didn’t improve symptoms of EoE – a chronic inflammatory disease of the esophagus – which means mast cells are not a primary driver. Hampton, N.J.-based Celldex noted that barzo did turn up a favorable safety profile.
Celldex Inc.’s KIT inhibitor, barzolvolimab, which hit its phase II endpoints in late 2023, kicking off phase III development in chronic spontaneous urticaria, offered up some impressive long-term findings at the EAACI Congress 2025, including complete responses in patients for as long as seven months after the cessation of therapy, which analysts said could position the drug as a potentially best-in-class option.
Succeeding where others have failed in an indication with high unmet need, Celldex Therapeutics Inc. disclosed top-line data from the phase II trial with barzolvolimab (barzo) against two common forms of chronic inducible urticaria (CIndU): cold urticaria (ColdU) and symptomatic dermographism (SD).
