Clinico-biological Correlation of Severe Asthma in Children

August 29, 2014 updated by: Assistance Publique Hopitaux De Marseille

Asthma is the most common chronic respiratory disorder in children. Despite significant advances in understanding of asthma, available therapies fail to alter the natural history and progression of the disease. Airway epithelial cells are continuously exposed to and injured by environmental irritants, such as viruses and pollutants, and as such are ideally situated to orchestrate airway function in response to these stimuli.

Severe or difficult-to-treat asthma in children is a complicated disorder characterized by ongoing symptoms and persistent airway inflammation and oxidant stress despite corticosteroid treatment. Although severe asthma is likely a heterogeneous disorder, affected children similar clinical features, including gas trapping, bronchial hyperresponsiveness, and aeroallergen sensitization. However, the molecular and cellular pattern of inflammation in children with severe asthma are not uniform : some investigators have found increased eosinophils and TH2 derived cytokines, others have noted noneosinophilic patterns with neutrophil activation.

Given the heterogeneity of the inflammatory response in children with severe asthma, additional methods to distinguish severe asthma are needed.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Anticipated)

40

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Marseille, France, 13354
        • Assistance Publique Hopitaux de Marseille

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

No older than 18 years (ADULT, CHILD)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Children 0-18 years
  • patients followed regularly for at least one year.
  • The diagnosis of asthma is increased according to the criteria of the Global Initiative for Asthma (GINA): children with a history of recurrent episodes of bronchial obstruction.
  • children with severe asthma defined by the American Thoracic Society (ATS): Severe asthma is defined by the presence of a major criterion: the need for high doses of inhaled corticosteroids (budesonide dose equivalent 400 micro g) and least two of the five minor criteria:
  • The daily use of beta 2 long-acting or short-term daily action (<4 years) or anti-leukotrienes associated with inhaled corticosteroids Daily or almost daily use of beta-2 short-acting Permanent-bronchial obstruction (FEV <80% predicted FEV)
  • At least one emergency department visit for asthma exacerbations in France
  • At least 3 courses of oral corticosteroids per year

Exclusion Criteria:

  • parents' refusal to participate in the study
  • refusal children to participate pathology underlying cardiac, neuromuscular, immunodeficiency

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Allocation: NON_RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: severe asthma atopic
Procedure: biopsies
EXPERIMENTAL: asthma non atopic
Procedure: biopsies

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
analysis of bronchial biopsies
Time Frame: 12 months
Number of ciliated cells(units) versus cells(units) with mucus found by fields of interface of the culture
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Assistance Publique Hopitaux De Marseille

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

November 1, 2013

Primary Completion (ANTICIPATED)

September 1, 2014

Study Completion (ANTICIPATED)

April 1, 2015

Study Registration Dates

First Submitted

September 12, 2013

First Submitted That Met QC Criteria

January 14, 2014

First Posted (ESTIMATE)

January 16, 2014

Study Record Updates

Last Update Posted (ESTIMATE)

September 1, 2014

Last Update Submitted That Met QC Criteria

August 29, 2014

Last Verified

August 1, 2014

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2013-A00401-44
  • 2013-06 (AP HM)

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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