Clinical remission in allergy and clinical immunology practice: State of the art and World Allergy Organization (WAO) call to action.

Recent advances in biological therapies, small molecules and allergen-specific immunotherapy are reshaping the management of immunoallergic diseases, progressively shifting therapeutic goals from short-term disease control toward the possibility of achieving sustained clinical remission. Despite increasing evidence across multiple conditions, a universally accepted and disease-transversal definition of clinical remission (CR) remains lacking. In this review we propose a comprehensive framework for defining clinical remission across a broad spectrum of immune-mediated diseases traditionally managed in Allergy and Clinical Immunology practice, including asthma, allergic rhinitis, chronic rhinosinusitis with nasal polyps, chronic urticaria, atopic dermatitis, mastocytosis, food allergy, and eosinophilic esophagitis. Clinical remission is defined as a sustained state of absence of clinically relevant disease manifestations, independently of underlying biological activity; suppression of inflammatory pathways and normalization of biomarkers define biological remission, which may coexist with, but is not required for, clinical remission. We introduce the 3D-CR model, a pragmatic, disease-adaptable framework integrating 3 complementary domains - clinical, biological, and functional - to characterize remission states as complete, partial, or absent. Building on this model, we propose the Allergic Disease Remission Score (ADReS) as a modular tool designed to support standardized assessment, longitudinal follow-up, and cross-disease comparison in clinical trials and real-world settings. These tools are intended as conceptual and research instruments rather than prescriptive algorithms for individual therapeutic decision-making. Finally, we outline a World Allergy Organization call to action advocating for a harmonized global approach to defining, measuring, and implementing clinical remission as a meaningful treatment target. Establishing standardized remission endpoints has the potential to improve patient outcomes, facilitate precision medicine strategies, enhance comparability across studies, and reduce heterogeneity in clinical research and practice worldwide.