Regeneron Advances Allergy Pipeline with Two Positive Phase 3 Trials Evaluating First-in-Class Antibody-Blockers of Cat and Birch Allergies

In separate cat and birch allergen-challenge trials, single doses of allergen-specific antibody blockers significantly reduced allergy symptoms compared to placebo Data from these trials will support further Phase 3 development TARRYTOWN, N.Y., Sept. 08, 2025 (GLOBE NEWSWIRE) -- Regeneron Pharmaceuticals, Inc. (NASDAQ: REGN) today announced results evaluating its first-in-class investigational allergen-blocking antibodies in allergen-challenge Phase 3 trials in adults with moderate-to-severe cat or birch a ...