- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT04888910
Novel Inflammatory Markers in Different Phenotypes of Severe Asthma
Asthma is a highly prevalent chronic airway inflammatory disease characterized by airway hyper-responsiveness, reversible airflow obstruction and increased mucus secretion, involving large and small airways. An emerging sub-phenotype of severe asthma is the late onset disease associated with nasal polyposis, a frequent co-morbidity that significantly impacts lung function and symptom control. On the basis of the infiltrate found in the sputum, asthma can be divided into four distinct phenotypes: eosinophilic, neutrophilic, mixed granulocytic and pauci-granulocytic. The majority of patients with eosinophilic asthma are sensitive to corticosteroids, and biological therapies targeting eosinophils (anti-Interleukin (IL)-5 and anti-IL5R) have been recently approved. However, it is known that some asthmatics, particularly those who have severe disease and are resistant to corticosteroids, have elevated neutrophil counts in the airway where they play a vital role in the exacerbation of the disease. However, the precise role of neutrophils in severe asthma and the mechanisms involved in neutrophil-induced tissue damage have not been clarified yet.
The hypothesis of the study is that neutrophils and eosinophils can contribute to the severity of asthma by changing their phenotypes according to the airway environment. Thus, a better understanding of the roles of neutrophils and eosinophils in severe asthma may lead to the identification of novel biomarkers and the development of new therapeutic approaches in different phenotypes of severe asthma.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Type d'étude
Inscription (Anticipé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Ilaria Puxeddu, MD, PhD
- Numéro de téléphone: +393394740912
- E-mail: ilaria.puxeddu@unipi.it
Lieux d'étude
-
-
Tuscany
-
Pisa, Tuscany, Italie, 56126
- Recrutement
- Pisa University
-
Contact:
- Ilaria Puxeddu, MD, PhD
- Numéro de téléphone: +393394740912
- E-mail: ilaria.puxeddu@unipi.it
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
Méthode d'échantillonnage
Population étudiée
La description
Inclusion Criteria:
- Male or female
- age (18-65 years)
- Diagnosis of severe asthma according to the European Respiratory Society (ERS) and American Thoracic Society (ATS) definition, with and without nasal symptoms
- normal pulmonary function post-therapy (FEV1 post-bronchodilation: greater than 80% of the predicted value, with FEV1/ vital capacity (VC) > 88-89% - for males and females, respectively - of the predicted value)
- non reversible chronic airflow limitation (FEV1 post-bronchodilation: lower than 70% of the predicted value, with FEV1/VC < 88-89% of the predicted value)
- Signing of the informed consent
Exclusion Criteria:
- Referred Pregnancy
- Use of therapy with beta-blockers
- Smoking (current or within the previous 3 months)
- Negation to participate to the study
- Current upper and lower airways infectious diseases
- Current systemic infectious diseases
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
Intervention / Traitement |
---|---|
asthma with nasal polyps
severe asthma with involvement of the upper airways (chronic rhinosinusitis with nasal polyps)
|
observation of biomarkers in different asthma groups
|
severe asthma without nasal polyps
severe asthma without involvement of the upper airways
|
observation of biomarkers in different asthma groups
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
---|---|---|
cell receptors
Délai: 2 years
|
to identify neutrophil- and eosinophil-receptors in the airways of severe asthmatic patients with or without involvement of the upper airways
|
2 years
|
cell mediators
Délai: 2 years
|
to identify soluble and matrix-derived mediators from neutrophils and eosinophils in the airways of severe asthmatic patients with or without involvement of the upper airways
|
2 years
|
Collaborateurs et enquêteurs
Parrainer
Publications et liens utiles
Publications générales
- Wu W, Bleecker E, Moore W, Busse WW, Castro M, Chung KF, Calhoun WJ, Erzurum S, Gaston B, Israel E, Curran-Everett D, Wenzel SE. Unsupervised phenotyping of Severe Asthma Research Program participants using expanded lung data. J Allergy Clin Immunol. 2014 May;133(5):1280-8. doi: 10.1016/j.jaci.2013.11.042. Epub 2014 Feb 28.
- Wenzel SE, Jayawardena S, Graham NM, Pirozzi G, Teper A. Severe asthma and asthma-chronic obstructive pulmonary disease syndrome - Authors' reply. Lancet. 2016 Dec 3;388(10061):2742. doi: 10.1016/S0140-6736(16)31720-2. Epub 2016 Dec 2. No abstract available.
- Ray A, Kolls JK. Neutrophilic Inflammation in Asthma and Association with Disease Severity. Trends Immunol. 2017 Dec;38(12):942-954. doi: 10.1016/j.it.2017.07.003. Epub 2017 Aug 4.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Réel)
Achèvement primaire (Anticipé)
Achèvement de l'étude (Anticipé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- Maladies des voies respiratoires
- Maladies du système immunitaire
- Maladies pulmonaires
- Hypersensibilité immédiate
- Maladies bronchiques
- Maladies oto-rhino-laryngologiques
- Conditions pathologiques, anatomiques
- Maladies pulmonaires obstructives
- Hypersensibilité respiratoire
- Hypersensibilité
- Maladies du nez
- Polypes
- Asthme
- Polypes nasaux
Autres numéros d'identification d'étude
- NIMISA
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .