Advanced phenotyping in hypersensitivity drug reactions to NSAIDs.

Area of Science:

• Immunology
• Pharmacology
• Clinical Medicine

Background:

• Non-steroidal anti-inflammatory drugs (NSAIDs) are frequently implicated in hypersensitivity drug reactions globally.
• These reactions commonly manifest as skin or respiratory symptoms, with acute urticaria being particularly frequent.
• Proposed mechanisms involve both specific and non-specific immunological pathways.

Purpose of the Study:

• To review the clinical phenotypes of NSAID hypersensitivity.
• To identify the specific drugs involved in these reactions.
• To provide a detailed classification of NSAID hypersensitivity syndromes for future research.

Main Methods:

• Literature review of clinical phenotypes and drugs associated with NSAID hypersensitivity.
• Classification of reactions into five major clinical syndromes.
• Discussion of potential immunological mechanisms.

Main Results:

• Five major clinical syndromes of NSAID hypersensitivity are identified: aspirin-exacerbated respiratory disease (AERD), aspirin-exacerbated cutaneous disease (AECD), multiple NSAID-induced urticaria/angioedema (MNSAID-UA), single NSAID-IgE reactions, and single NSAID T cell responses.
• Further classification within these syndromes is possible based on detailed clinical characteristics.
• The review highlights the need for precise phenotyping for pharmacogenetic studies.

Conclusions:

• NSAID hypersensitivity presents diverse clinical phenotypes, necessitating detailed classification.
• Understanding these distinct syndromes is crucial for advancing research, particularly in pharmacogenetics.
• Accurate phenotyping will enable better patient management and targeted therapeutic strategies.