APG-777 is an anti-IL-13 humanized monoclonal antibody (mAb) designed to block Th2 inflammatory signaling mediated by the IL-13Rα1/IL-4Rα complex, while APG-990 is a fully human anti-OX40L mAb that that blocks type 1/2/3 inflammatory signaling. Apogee Therapeutics Inc. is studying the combination effects of APG-777 and APG-990 as potential therapy for atopic dermatitis (AD).