Novartis Agrees to Acquire Excellergy for Up to $2 Billion to Bolster Allergy Portfolio with Potential Xolair Successor on March 27, 2026 Allergy Specialty anti-IgE Excellergy Exl-111 Novartis Xolair +
GSK Acquires RAPT Therapeutics for $2.2 Billion to Advance Food Allergy Drug Ozureprubart on January 20, 2026 acquisition anti-IgE Food Allergy Immunology ozureprubart RAPT SmithKline Beecham +