Ramatroban/Montelukast Versus Montelukast/Placebo on the Early Allergic Reaction in Asthma Sensitive to House Dust Mite

April 13, 2012 updated by: Research Center Borstel

A Randomized Double-blind and Placebo-controlled Study to the Influence of Ramatroban/Montelukast Versus Montelukast/Placebo on the Early Allergic Reaction in Patients With Mild to Moderate Atopic Asthma (House Dust Mite)

The purpose of this study is to examine wether the combination of Ramatroban/Montelukast is as effective as Montelukast alone in patients with mild to moderate atopic asthma (GINA I and II) sensitive to house dust mite. The test is performed by a specific inhalative provocation.

Study Overview

Status

Withdrawn

Conditions

Intervention / Treatment

Detailed Description

In the early allergic response in asthma, allergens connect to IgE on mast cells and basophile granulocytes. For that there are 3 main pathways in activation:

Besides quick liberation of Histamine and induction of cytokines there is a liberation of mediators from the arachidonate metabolism. In addition to Histamine there are especially Prostaglandin PGD2, Leukotriene LTC4 and also Thromboxane A2 for the classic symptoms of the early allergic reaction responsible. All of those mediators have potent bronchoconstrictive activity.

Prostaglandin D2 and Thromboxane A2 work on Thromboxane receptors. LTC4 links to Cys-LT-receptors.

According to an in-vitro-model of the early allergic reaction in human precision-cut lung slices with passive specific sensitization against grass-pollen, it has been shown that the early allergic response can only be suppressed partly by giving Antihistamines, Leukotriene receptor antagonists or Thromboxane receptor antagonist all on its own. It goes in consent with clinical findings, that all of these drugs alone have just an insufficient activity on asthma.

In the described human in-vitro-model the combination of Thromboxane receptor antagonist with Leukotriene receptor antagonist (Montelukast) blocked the early response in asthma completely.

These findings are the rationale for our study because so far there is no clinical data about the effect of the combination of Leukotriene receptor antagonist (Montelukast) with Thromboxane receptor antagonist.

The drug Montelukast is a Leukotriene receptor antagonist which is known for the treatment of mild to moderate asthma in Germany. According to the GINA-Guidelines Montelukast is given in addition to steroids and β-mimetics in asthma severity grade II and III.

The drug Ramatroban is a Thromboxane A2 receptor antagonist which is in Japan allowed for the treatment of allergic rhinitis. It also has an anti-asthmatic effect because it blocks bronchoconstriction, hyperresponsiveness of the airways and infiltration of inflammation cells. Furthermore, it has positive effects on allergic rhinitis by blocking the permeability of capillaries, blocking the nasal hyperresponsiveness and the infiltration of the mucosa by eosinophils.

During the studies Ramatroban has proved to be a save drug for the indication allergic rhinitis and also allergic asthma. In contrast to sufficient effectiveness in the indication allergic rhinitis it has been said that there is just insufficient effectiveness in the indication asthma.

About the combination of Ramatroban and Montelukast exists no clinical data so the study at hand examines the effect of Ramatroban/Montelukast versus Montelukast/Placebo on the early allergic reaction in patients with mild to moderate atopic asthma (GINA I and II) sensitive to house dust mites in a specific inhalative provocation.

Study Type

Interventional

Phase

  • Phase 2
  • Phase 3

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

  • Germany
      • Borstel, Germany, 23845
        • Research Center Borstel

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

16 years to 63 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Atopic (house dust mite) asthma
  • Severity GINA one and two

Exclusion Criteria:

  • No reaction in specific bronchial provocation test
  • Other kind of clinical relevant atopic reaction

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Lung function by spirometry
Allergen concentration for specific bronchoprovocation

Secondary Outcome Measures

Outcome Measure
Blood level of thromboxane and leukotriene metabolite

Collaborators and Investigators

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

Sponsor

Research Center Borstel

Investigators

  • Principal Investigator: Peter Zabel, Prof., Research Center Borstel

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

April 1, 2005

Study Completion (Actual)

April 1, 2007

Study Registration Dates

First Submitted

April 1, 2006

First Submitted That Met QC Criteria

April 1, 2006

First Posted (Estimate)

April 5, 2006

Study Record Updates

Last Update Posted (Estimate)

April 16, 2012

Last Update Submitted That Met QC Criteria

April 13, 2012

Last Verified

April 1, 2012

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • RAMONA-4022229
  • 4022229
  • Bundesinstitut (BfArM)

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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