Clinical trial NCT02558127: Asthma With Hypersecretion-associated Gene for Cystic Fibrosis
Official title: Asthma With Hypersecretion-associated Gene for Cystic Fibrosis Clinical, Inflammatory and Genetics Characterization
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Asthma
Keywords: asthma
cystic fibrosis
Lead sponsor: Fundació Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau
Sponsor class: OTHER
First posted: 2015-09-23
Enrollment: 100
Sex: ALL
Minimum age (years): 18
Maximum age (years): 80
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: CROSS_SECTIONAL
Sampling method: PROBABILITY_SAMPLE
Study population: A total of 100 asthmatic patients of both sexes, aged between 18 and 80 years will be included in the study. They have not a respiratory infection in the last month. Of the 100 patients, 50 will be hypersecretory asthmatic patients and 50 non- hypersecretory asthmatic patients. Both groups have an even distribution regarding sex, age, level and disease control. Asthma patients were defined according to the criteria of the GEMA 2015 -GINA 2014

Brief summary: The combination of asthma and being a carrier of genetic variants (mutations and / or polymorphisms) in the CFTR gene variant would cause bronchial asthma with mucus hypersecretion. This phenotype is characterized by a more severe disease, in terms of control, quality of life, exacerbations and lung function, and a different asthma the bronchial hypersecretion without inflammatory phenotype.

Detailed description: Primary objective:

Determine the presence of genetic variants (mutations and / or polymorphisms) of the CFTR gene in patients with asthma with or without bronchial mucus hypersecretion.

Secondary objectives:

To identify genetic variants (mutations and / or polymorphisms) of the most common CFTR gene in the asthmatic population. -To define the inflammatory phenotype of asthma with bronchial mucus hypersecretion. -To compare the severity, control, quality of life and frequency of exacerbations of asthma patients with or without bronchial mucus hypersecretion

Eligibility criteria: Inclusion criteria: Asthmatic patients aged between 18 and 80 years.They have not a respiratory infection in the last month.

Criteria for exclusion: Presence of other lung disease, Sequelae of tuberculosis, Bronchiectasis (large, secondary to a different asthma respiratory disease), Cystic fibrosis, Residual pleural disease, Interstitial diseases, Severe comorbidity, Patients with oral corticosteroids or other immunomodulators by causes other than asthma.

Primary outcomes:
measure: Number of asthmatic patients CF carriers
timeFrame: 12 months
Secondary outcomes:
measure: Noncarriers number of asthmatics
timeFrame: 12 months
Other outcomes:
Locations:
city: Barcelona
country: Spain
facility: Hospital de la Santa Creu i Sant Pau. Carrer Mas Casanovas 90.
Study officials:
affiliation: Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau - IIB Sant Pau
name: Astrid Crespo
role: PRINCIPAL_INVESTIGATOR
References:
citation: Goodwin J, Spitale N, Yaghi A, Dolovich M, Nair P. Cystic fibrosis transmembrane conductance regulator gene abnormalities in patients with asthma and recurrent neutrophilic bronchitis. Can Respir J. 2012 Jan-Feb;19(1):46-8. doi: 10.1155/2012/546702.
citation: Dahl M, Tybjaerg-Hansen A, Lange P, Nordestgaard BG. DeltaF508 heterozygosity in cystic fibrosis and susceptibility to asthma. Lancet. 1998 Jun 27;351(9120):1911-3. doi: 10.1016/s0140-6736(97)11419-2.
citation: Dahl M, Nordestgaard BG, Lange P, Tybjaerg-Hansen A. Fifteen-year follow-up of pulmonary function in individuals heterozygous for the cystic fibrosis phenylalanine-508 deletion. J Allergy Clin Immunol. 2001 May;107(5):818-23. doi: 10.1067/mai.2001.114117.