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Celldex’s skin disease drug meets goals in two late-stage trials

By Thomson Reuters Sep 22, 2026 | 6:40 AM

Sept 22 (Reuters) – Celldex Therapeutics said on Tuesday its experimental drug for a skin disease met the main and secondary goals of ​two late-stage trials.

Here are the details:

• The ‌company is testing barzolvolimab in patients with chronic spontaneous urticaria — a condition that causes recurring hives and swelling — whose symptoms are not adequately controlled by allergy medicines.

• The two late-stage ‌trials ​enrolled a combined 1,939 patients ⁠and tested two doses ⁠of barzolvolimab against a placebo.

• At 12 weeks, both doses of the drug significantly reduced disease activity compared with placebo.

• About 42.1% to 45.7% ​of patients treated with barzolvolimab had a complete response at week 12, meaning they had no ⁠itching or hives, compared ⁠with about 9.3% to 12.6% of those ​on placebo.

• The benefit was sustained or improved through ​week 24, when complete response rates ranged from ‌about 45.1% to 54% among patients receiving barzolvolimab, versus about 15% to 18% for placebo.

• The drug also showed a benefit in patients whose disease ⁠had not responded to omalizumab, sold as Xolair by Novartis and Roche, and in patients with angioedema.

• Treatment in ⁠both trials ‌will continue through 52 weeks, and ⁠Celldex plans to submit a marketing ​application to ‌the US Food and Drug Administration ​in 2027.

• ⁠In July, Celldex Therapeutics discontinued development of barzolvolimab for patients with prurigo nodularis after it failed to meet the main and key secondary goals in a mid-stage study.

(Reporting by Siddhi Mahatole in Bengaluru; Editing ​by Leroy Leo)