Saves the questions and what to expect into your notes, next to the visit they belong to.
Keep this study
Lead
Brigham and Women's Hospital
With
Merck Sharp & Dohme LLC
Multiple genetic polymorphisms in the leukotriene pathway have been described but their clinical relevance is unclear. A single nucleotide polymorphism in the LTC4 synthase promoter region has been associated with increased LTC4 synthase mRNA and a trend toward improved bronchodilatory response to leukotriene modifiers in severe asthmatics. This study will examine mild to moderate asthmatics with the variant gene and evaluate the bronchoprotective response of montelukast in a double-blind, placebo-controlled cross-over fashion.
Age
18–65
Sex
ALL
Healthy volunteers
Not accepted
You may be eligible if
Male and female subjects, age 18-55
Clinical history consistent with asthma
Mild to moderate asthma as determined by pulmonary function tests--60% or higher of predicted FEV1 for age, sex and race.
Response to hypertonic saline, which will be the main outcome variable measured.
You may not be if
Smokers (total lifetime smoking history\>10 pack-years, any in the past year)
Pregnant woman-if of childbearing age, not using an acceptable form of birth control.
Use of a leukotriene modifier within the past month
Use of inhaled or oral steroids within the past month.
Emergency room visit for asthma exacerbation within the past 6 weeks.
Intubation for asthma exacerbation in the past 10 years.
Adverse reaction to inhaled beta-agonists in the past.
No recent (past 48 hours) use of anticholinergics, theophylline, antihistamines, pseudoephedrine.
Patients will also be asked not to use any short acting beta-agonists for 6 hours and long-acting beta-agonists for 48 hours before their initial visit (when pulmonary function evaluation will be performed).
Lung disease other than asthma
Significant medical illness other than asthma
Clareo Health | Predicting the Response to Montelukast by Genetic Variation in Asthmatics
