Study of MK0476 (Montelukast Sodium) and Effects on Asthma and Nasal Symptoms Upon Exposure to Cats (0476-256)

This study has been completed.
Information provided by (Responsible Party):
Merck Sharp & Dohme Corp. Identifier:
First received: September 21, 2004
Last updated: September 2, 2015
Last verified: September 2015
The purpose of this study is to determine the protective effect of an approved medication on asthma and allergic rhinitis (inflammation of the mucous membrane of the nose) upon exposure to cats.

Condition Intervention Phase
Asthma, Bronchial
Rhinitis, Allergic, Perennial
Drug: MK0476, montelukast sodium
Drug: Comparator: placebo
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Prevention
Official Title: A Multicenter, Double-Blind, Randomized, Crossover Study Investigating the Clinical Effect of Montelukast in Patients With Concomitant Asthma and Allergic Rhinitis Upon Controlled Exposure to Cat Allergen

Resource links provided by NLM:

Further study details as provided by Merck Sharp & Dohme Corp.:

Primary Outcome Measures:
  • Co-Primary endpoints: (1) Area Under the Curve (AUC) for the percent fall from prechallenge FEV1 during allergen challenge; (2) Area Under the Curve for the increase from prechallenge Nasal Symptoms score during allergen challenge

Secondary Outcome Measures:
  • (1) Maximum percent fall from prechallenge FEV1; (2) AUC for the increase from prechallenge Chest Symptoms score (3) AUC for the increase from prechallenge Nasal Symptoms score collected over 60 minutes after terminating the challenge.

Enrollment: 58
Study Start Date: April 2002
Study Completion Date: January 2003
Primary Completion Date: January 2003 (Final data collection date for primary outcome measure)
Detailed Description:
The duration of treatment is 2 weeks.

Ages Eligible for Study:   15 Years to 55 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Increased sensitivity to cat allergen proven by positive allergy testing, and by decreased lung function and increased symptoms of allergic rhinitis (runny nose) upon exposure to cats.

Exclusion Criteria:

  • Medical history of a lung disorder (other than asthma) or a recent upper respiratory tract infection.
  Contacts and Locations
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Please refer to this study by its identifier: NCT00092105

Sponsors and Collaborators
Merck Sharp & Dohme Corp.
Study Director: Medical Monitor Merck Sharp & Dohme Corp.
  More Information

Responsible Party: Merck Sharp & Dohme Corp. Identifier: NCT00092105     History of Changes
Other Study ID Numbers: 0476-256  2004_024 
Study First Received: September 21, 2004
Last Updated: September 2, 2015
Health Authority: United States: Food and Drug Administration

Keywords provided by Merck Sharp & Dohme Corp.:
Rhinitis, Allergic

Additional relevant MeSH terms:
Rhinitis, Allergic
Rhinitis, Allergic, Perennial
Bronchial Diseases
Hypersensitivity, Immediate
Immune System Diseases
Lung Diseases
Lung Diseases, Obstructive
Nose Diseases
Otorhinolaryngologic Diseases
Respiratory Hypersensitivity
Respiratory Tract Diseases
Respiratory Tract Infections
Anti-Asthmatic Agents
Cytochrome P-450 CYP1A2 Inducers
Cytochrome P-450 Enzyme Inducers
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Leukotriene Antagonists
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Respiratory System Agents processed this record on May 26, 2016