- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03640975
Innate Immunity in Eosinophilic Esophagitis (CLOE)
Innate Lymphoid Cells in Eosinophilic Esophagitis (French Title : Cellules Lymphoïdes innées Dans l'Oesophagite à Eosinophiles)
Study Overview
Detailed Description
Children (aged 1 to 18 years) presenting with symptoms suggestive of EoE and requiring an upper gastrointestinal endoscopy with biopsies of the esophageal mucosa in order to confirm or exclude the diagnosis of EoE will be included.
Children paired for age in whom an endoscopy performed to explore symptoms of EoE revealed another condition (peptic oesophagitis, achalasia), or children paired for age in whom an endoscopy with biopsies has been performed to explore chronic abdominal or epigastric pain or suspected chronic inflammatory bowel disease, will be include as control subjects.
The endoscopy will be performed under general anaesthesia using a flexible endoscope with an external diameter of between 4.9 and 9.2 mm, depending on the size of the child. In line with the guidelines, eight biopsies will be collected from the proximal, median and distal oesophagus for the routine analysis of esophageal remodelling and inflammation. Three of these biopsies will be used in the context of this study to analyse innate immune cells using flow cytometry and to determine the profile of cytokine expression. Two biopsies will be placed in sterile, 0.5 ml Nunc tubes containing a storage buffer (MACS® Tissue Storage Solution) and then stored in ice until the extraction of cells for cytometric analysis. The third specimen will be placed in a sterile tube and frozen immediately in liquid nitrogen for analyses of the esophageal microbiome.
ILC1, 2 and 3 and their sub-types will be identified by means of structural criteria (size and granularity) and differential membrane and intracellular labelling using the specific markers shown below. All acquisitions and analyses will be achieved using a 13-colour NovoCyte cytometer (AACEA) and its associated software (NovoAxpressTM), which are available in the laboratory.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
-
-
-
Paris, France, 75015
- Necker-Enfants Malades Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- children 1-18 years
- presenting with symptoms suggestive of EoE
- requiring an upper gastrointestinal endoscopy with biopsies of the esophageal mucosa in order to confirm or exclude the diagnosis
- Children paired for age in whom an endoscopy performed to explore symptoms of EoE revealed another condition (peptic oesophagitis, achalasia), or children paired for age in whom an endoscopy with biopsies has been performed to explore chronic abdominal or epigastric pain or suspected chronic inflammatory bowel disease, will be include as control subjects
Exclusion Criteria:
- immune deficiency
- auto immune diseases
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Prospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
case : eosinophilic esophagitis
Children with symptoms suggestive of EoE and requiring an upper gastrointestinal endoscopy with biopsies of the esophageal mucosa
|
The endoscopy will be performed under general anaesthesia using a flexible endoscope with an external diameter of between 4.9 and 9.2 mm, depending on the size of the child.
In line with the guidelines, eight biopsies will be collected from the proximal, median and distal oesophagus for the routine analysis of esophageal remodelling and inflammation.
Three of these biopsies will be used in the context of this study to analyse innate immune cells using flow cytometry and to determine the profile of cytokine expression.
Two biopsies will be placed in sterile, 0.5 ml Nunc tubes containing a storage buffer (MACS® Tissue Storage Solution) and then stored in ice until the extraction of cells for cytometric analysis .
The third specimen will be placed in a sterile tube and frozen immediately in liquid nitrogen for analyses of the esophageal microbiome.
|
control
Children in whom an endoscopy performed to explore symptoms of EoE revealed another condition (peptic oesophagitis, achalasia), or children in whom an endoscopy with biopsies has been performed to explore chronic abdominal or epigastric pain or suspected chronic inflammatory bowel disease
|
The endoscopy will be performed under general anaesthesia using a flexible endoscope with an external diameter of between 4.9 and 9.2 mm, depending on the size of the child.
In line with the guidelines, eight biopsies will be collected from the proximal, median and distal oesophagus for the routine analysis of esophageal remodelling and inflammation.
Three of these biopsies will be used in the context of this study to analyse innate immune cells using flow cytometry and to determine the profile of cytokine expression.
Two biopsies will be placed in sterile, 0.5 ml Nunc tubes containing a storage buffer (MACS® Tissue Storage Solution) and then stored in ice until the extraction of cells for cytometric analysis .
The third specimen will be placed in a sterile tube and frozen immediately in liquid nitrogen for analyses of the esophageal microbiome.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The numbers of innate immune cells
Time Frame: 1 year
|
The counts of innate immune cells will be compared between EoE patients and controls
|
1 year
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Microbiota
Time Frame: 1 year
|
Analyses of the composition of the esophageal microbiome will be performed using 16S rDNA sequencing after the extraction of DNA according to published protocols and/or using commercial kits (QlAamp DNA stool Mini Kit; QIAGEN).
The pyrosequencing of 16S DNA, the identification of groups and phyla and initial biostatistical analyses will be carried out by specialised platforms.
|
1 year
|
Metabolomics
Time Frame: 1 year
|
Metabolomic analyses will be performed on plasma and red blood cell extracts using a device such as an Orbitrap-Exactive equipped with an electrospray source.
The data will be analysed using data processing tools available in the laboratory (software systems for signal detection and automatic alignment, annotation and statistical analysis)
|
1 year
|
Collaborators and Investigators
Investigators
- Principal Investigator: Guillaume LEZMI, MD, Assistance Publique - Hôpitaux de Paris
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
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
Other Study ID Numbers
- NI17020JHLJ
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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.
Clinical Trials on Eosinophilic Esophagitis
-
Children's Hospital Medical Center, CincinnatiNational Institute of Allergy and Infectious Diseases (NIAID); National Institute... and other collaboratorsCompletedEosinophilic Esophagitis (EoE) | Eosinophilic Gastrointestinal Disorders (EGIDs)United States
-
Federico II UniversityRecruitingEsophagitis, EosinophilicItaly
-
Ann & Robert H Lurie Children's Hospital of ChicagoRecruitingEosinophilic Gastroenteritis | Eosinophilic Esophagitis | Eosinophilic Colitis | Eosinophilic Gastrointestinal DiseaseUnited States
-
Medical University of GrazRecruiting
-
AQILION ABCompletedEosinophilic Esophagitis (EoE)United Kingdom
-
Regeneron PharmaceuticalsSanofiActive, not recruitingEosinophilic Esophagitis (EoE)United States, Canada
-
ShireTakeda Development Center Americas, Inc.TerminatedEosinophilic Esophagitis (EoE)United States
-
ShireCompletedEosinophilic Esophagitis (EoE)United States
-
ShireCompleted
-
ShireCompletedEosinophilic Esophagitis (EoE)United States
Clinical Trials on Endoscopy
-
Weill Medical College of Cornell UniversityUnknownInterventional Endoscopy Database for Pancreatico-biliary, Gastrointestinal and Esophageal DisordersColorectal Cancer | Pancreatic Cancer | Esophageal Cancer | Cholangiocarcinoma | Bile Duct Cancer | Cholangitis | Barrett's Esophagus | Gallstones | Choledocholithiasis | Bile Leak | Obstructive Jaundice | Duodenal Cancer | Pancreatic Pseudocysts | Ampullary Cancer | Biliary Strictures | Recurrent Pancreatitis | Bile Duct... and other conditionsUnited States
-
Chinese University of Hong KongCompletedGastrointestinal Bleeding | Bleeding Peptic Ulcer | Active BleedingChina
-
Unidade Local De Saúde Do Norte AlentejanoNOVA Medical SchoolRecruiting
-
Jagiellonian UniversityCompleted
-
University Medical Center GroningenMaastricht University Medical Center; Erasmus Medical Center; Medtronic - MITG; Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) and other collaboratorsCompletedLynch Syndrome | Small Bowel NeoplasiaNetherlands
-
Hvidovre University HospitalTerminatedUpper Gastrointestinal Disease,UlcersDenmark
-
Technical University of MunichRotkreuzklinikum München gGmbH; Klinikum Freising; Klinikum Landshut-Achdorf; Städtisches... and other collaboratorsCompletedEndoscopic Diagnosis in EsophagusGermany
-
Dallas VA Medical CenterCompleted
-
University Hospital, MontpellierTerminatedthe Management of Weight Regain After Gastric Bypass by Endoscopic SuturingFrance
-
Johns Hopkins UniversityEthicon, Inc.WithdrawnEsophageal and Gastric VaricesUnited States