- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01710930
Protocol TARC-ABPA
Interest of TARC Serum Marker for Follow-up of Patients With Allergic Broncho-Pulmonary Aspergillosis (ABPA), Excluding Cystic Fibrosis
The main objective of this study is to determine if a doubling of serum TARC (compared to baseline) is associated with the occurrence of exacerbations of ABPA.
The secondary objectives of the study are :
- To investigate if induced sputum eosinophils count (compared to baseline) is associated with the occurrence of exacerbations.
- To examine if the exhaled NO (compared to a baseline) is associated with the occurrence of exacerbations.
- To investigate if activation of circulating T cells (compared to a baseline) is associated with the occurrence of exacerbations.
- To examine if the rate of specific Asp f IgG measured by ELISA (compared to a baseline) is associated with the occurrence of exacerbations.
- To determine if the variation of one of the markers above, TARC or Asp f specific IgE measured at baseline, may be associated with the radiological stage of the disease (ABPA-S, ABPA-CB, ABPA-ORF).
- To investigate if there is a link between fungal exposure at home (visually assessed by the contamination level and the proportion of positive samples for Asp. f) and the frequency of exacerbations.
- To establish if some of the clinical, functional or biological data studied are associated with the frequency of exacerbations.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Le Mans, France, 72037
- CHU Le Mans
-
Nantes, France, 44093
- Nantes University Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Pre-inclusion criteria :
- Major patients, of indifferent sex,
- Patients insured,
- Patients accepting to give, after information, their signed informed consent form,
- Patients affected by ABPA,
- Patients in remission without treatment, or stable under current treatment for at least 3 months.
Inclusion criteria :
This inclusion will be definitive in V1, if :
- The pre-inclusion criteria are respected,
- The patient has not presented any exacerbation since V0 thereby define a basic state.
If patient could not be included, it will be possible to re-screen him for the study, provided he meets the pre-inclusion and inclusion criteria. In this case, a new V0 will be scheduled at least 3 months after the first V0.
Exclusion criteria :
- Minor patients,
- Adults under guardianship,
- Pregnant or lactating women,
- Patients unable to follow the protocol or to give consent,
- Patients with an infection of the lower respiratory tract in the 4 weeks preceding V0 or between V0 and V1,
- Patients who were hospitalized for respiratory problems in the 4 weeks preceding V0 or between V0 and V1,
- Patients with chronic inflammatory diseases unrelated to ABPA which could influence the results,
- Patients with cancer,
- Patients followed for cystic fibrosis defined by a positive sweat test,
- Patients with known compliance problems identified prior to the study.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: DIAGNOSTIC
- Allocation: NA
- Interventional Model: SINGLE_GROUP
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Study of predictive factors
|
Phase 1 : Inclusion of patients (V0) : In the case of a participation agreement, data on age, profession, previous history, history of the disease and current treatments will be collected. Different tests will be performed at this visit. Phase 2 : Determination of the baseline (V1) : Patients will be reviewed one month after V0 (V1). In the absence of exacerbation between V0 and V1, the examinations performed in routine practice will be used to determine the basic state of biological parameters of interest. During this visit, different tests will be performed. Phase 3 : Quarterly monitoring of patients (V2-V9) : Patients will be followed every three months for 2 years (V2-V9). |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
---|---|
The rate of serum TARC
|
The rate of serum TARC will be measured by ELISA and expressed in pg / ml.Doubling of TARC rate compared between baseline (V1) and exacerbations is the primary endpoint (qualitative binary).
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
---|---|
Induced sputum eosinophils count
|
Increase in induced sputum eosinophils count assessed by cytology between baseline visit (V1) and the visit(s) in exacerbation.
|
The rate of Exhaled NO(FeNO50)
|
Increase in exhaled NO (FeNO50) between baseline visit (V1) and the visit (s) in exacerbation.
|
The rate of circulating T cells
|
Increase in circulating T cells activation, measured by the rate of Th1, Th2, Th17, Treg lymphocytes by flow cytometry before and after specific Asp f. stimulation between baseline visit (V1) and the visit (s) in exacerbation.
|
The rate of Aspf. specific serum IgG
|
Increase of Aspf.
specific serum IgG, measured by ELISA between baseline visit (V1) and the visit (s) in exacerbation
|
Correlation between markers
|
Correlation between previous markers, TARC or specific IgE measured at baseline and the stage of the radiological stage of the disease evaluated at V1 (ABPA-S, ABPA-CB, ABPA-ORF).
|
Fungal exposure at home
|
Link of fungal exposure at home with exacerbation frequency and the stage of disease severity.
|
Clincal parameters
|
Link between the clinical parameters (sex, complex aspergillosis, smoking, body mass index, reached ENT associated (chronic rhinitis, sinonasal-polyposis)) and the frequency of exacerbations.
|
Biological parameters
|
Link between the biological parameters measured at stable state (V1) (total IgE, Asp fspecific IgE, Aspergillus precipitins) and the frequency of exacerbations.
|
Function parameters
|
Link between the function parameters measured at baseline state (FEV1 (in%), FVC (in%), compared RV / TLC, FeNO50) and the frequency of exacerbations.
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Anaïs PIPET, Doctor, CHU de Nantes
- Study Chair: Hakima OUKSEL, Doctor, University Hospital, Angers
- Study Chair: François GOUPIL, Doctor, CH du Mans
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Infections
- Respiratory Tract Infections
- Respiratory Tract Diseases
- Immune System Diseases
- Lung Diseases
- Hypersensitivity, Immediate
- Bacterial Infections and Mycoses
- Respiratory Hypersensitivity
- Hypersensitivity
- Mycoses
- Lung Diseases, Fungal
- Aspergillosis
- Pulmonary Aspergillosis
- Aspergillosis, Allergic Bronchopulmonary
Other Study ID Numbers
- RC11_0158
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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