The precision medicine strategy to treat COPD pulmonary traits in clinical practice: The role of N-acetylcysteine

• Published in: Respiratory medicine 2024-12, Vol.235, p.107865, Article 107865
• Main Authors: Scioscia, Giulia, Baraldi, Federico, Bigoni, Tommaso, Papi, Alberto, Vatrella, Alessandro, Micheletto, Claudio, Foschino Barbaro, Maria Pia
• Format: Article
• Language: English
• Subjects: Acetylcysteine - therapeutic use; Anti-inflammatory agents; Antioxidant agents; Bronchitis, Chronic - drug therapy; Bronchitis, Chronic - physiopathology; COPD; Cough - drug therapy; Disease Progression; Expectorants - therapeutic use; Humans; Mucolytic; N-acetylcysteine; Precision Medicine - methods; Pulmonary Disease, Chronic Obstructive - drug therapy; Pulmonary Disease, Chronic Obstructive - physiopathology; Treatable traits
• ISSN: 0954-6111; 1532-3064; 1532-3064
• DOI: 10.1016/j.rmed.2024.107865

Chronic obstructive pulmonary disease (COPD) is a progressive lung condition and a leading cause of physical decline and death. COPD prevalence is expected to increase steadily in the coming years, and as a result, the healthcare and social burden of this condition will intensify. In this scenario, a patient-centric approach, the treatable trait (TT) strategy, based on the identification of traits that are clinically relevant, identifiable, monitorable and treatable, has emerged. The TT strategy, which considers behavioral/risk factors, as well as pulmonary and extrapulmonary traits, has shown to be a promising strategy in COPD management. This work reviews the TT strategy in COPD, giving special attention to the most relevant pulmonary traits, such as frequent productive cough, chronic bronchitis, type 2 inflammation, neutrophilic inflammation, lung hyperinflation, bronchiectasis, exacerbations and non‐reversible airflow limitation. N-acetylcysteine (NAC), a widely used mucolytic agent, might be a major player in this strategy. Indeed, through a thorough review of the literature, it has been possible to highlight that, besides being essential in the treatment of frequent productive cough, NAC could bring benefits in case of airflow limitations, airways inflammation, exacerbations and bronchiectasis. A clinical case in which the TT strategy was able to reduce symptoms and improve lung function and quality of life, minimizing unnecessary medication and side effects, is also presented. The identification of TTs and their proper treatment through personalized medicine remarkably ameliorates COPD management. Of note, the mucolytic, antioxidant, and anti-inflammatory activities of NAC might have beneficial effects on several TTs. •The treatable traits strategy in COPD could be address clinically relevant manageable needs.•It relies on the use of pharmacological and non-pharmacological approaches.•N-acetyl cysteine might play a crucial role in this strategy.