AsthmaPhase 3NCT00116324
Predicting the Response to Montelukast by Genetic Variation in Asthmatics
A Phase 3 study testing Montelukast in people with Asthma, run by Brigham and Women's Hospital at 1 site in United States.
Trial summary
The purpose of this study is to examine a specific variation in the genetic code for an enzyme (LTC4 synthase) which plays an important role in the airway inflammation associated with asthma. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Asthma
- What is being tested?
- Montelukast
- How many people
- 150 participants
- Where
- 1 siteUnited States
- Study dates
- Apr 2003to Dec 2006
- Phase
- Phase 3
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- 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.
Who cannot join
- 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.
Show all 11Show fewer
- 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
Trial locations and contacts
1 site in 1 country.
United States1 site
Brigham and Women's Hospital
Boston, Massachusetts, 02115
About this study
Official title: Predicting the Bronchoprotective Response to a Leukotriene Modifier by Genetic Polymorphism
The purpose of this study is to examine a specific variation in the genetic code for an enzyme (LTC4 synthase) which plays an important role in the airway inflammation associated with asthma. We hypothesize that asthmatic patients with this variant gene will have a better response to montelukast than patients with the wild type gene, as measured by the ability of montelukast to protect against a hypertonic saline challenge.
Read the detailed description
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.
- Conditions
- Asthma
- Being tested
- Montelukast
- Keywords
- Asthma, Leukotriene receptor antagonist, Hypertonic saline challenge
- Medical subject headings
- Asthma
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
MontelukastDrug
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in hypertonic saline PD20
Secondary outcomes (2)
Improved asthma control
Change in exhaled breath condensate inflammatory markers
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Jun 2005 (estimated)
- Study startApr 2003
- Study completionDec 2006
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (8)Papers the sponsor has linked to this study.
- Other trials for AsthmaStudies of the same condition, open and under way.
- More trials run by Brigham and Women's HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind
- Enrolment
- 150 participants
Sponsor and investigators
- Lead sponsor
- Brigham and Women's Hospital
- Sponsor type
- University, hospital or other
- Collaborators
- Merck Sharp & Dohme LLC
- Responsible party
- Principal investigator, Elliot Israel, MD, Brigham and Women's Hospital
- Investigators
- Elliot Israel, MD, Principal investigator, Brigham and Women's Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00116324
- Sponsor's protocol ID
- 2002-P-001696
- Status last verified
- May 2021
- First submitted
- 28 Jun 2005
- Last updated
- 18 May 2021
- Results posted
- No
Publications
Drazen JM, O'Brien J, Sparrow D, Weiss ST, Martins MA, Israel E, Fanta CH. Recovery of leukotriene E4 from the urine of patients with airway obstruction. Am Rev Respir Dis. 1992 Jul;146(1):104-8. doi: 10.1164/ajrccm/146.1.104.
PubMed 1320817Taylor GW, Taylor I, Black P, Maltby NH, Turner N, Fuller RW, Dollery CT. Urinary leukotriene E4 after antigen challenge and in acute asthma and allergic rhinitis. Lancet. 1989 Mar 18;1(8638):584-8. doi: 10.1016/s0140-6736(89)91611-5.
PubMed 2564113Drazen JM, Yandava CN, Dube L, Szczerback N, Hippensteel R, Pillari A, Israel E, Schork N, Silverman ES, Katz DA, Drajesk J. Pharmacogenetic association between ALOX5 promoter genotype and the response to anti-asthma treatment. Nat Genet. 1999 Jun;22(2):168-70. doi: 10.1038/9680.
PubMed 10369259In KH, Asano K, Beier D, Grobholz J, Finn PW, Silverman EK, Silverman ES, Collins T, Fischer AR, Keith TP, Serino K, Kim SW, De Sanctis GT, Yandava C, Pillari A, Rubin P, Kemp J, Israel E, Busse W, Ledford D, Murray JJ, Segal A, Tinkleman D, Drazen JM. Naturally occurring mutations in the human 5-lipoxygenase gene promoter that modify transcription factor binding and reporter gene transcription. J Clin Invest. 1997 Mar 1;99(5):1130-7. doi: 10.1172/JCI119241.
PubMed 9062372Sanak M, Simon HU, Szczeklik A. Leukotriene C4 synthase promoter polymorphism and risk of aspirin-induced asthma. Lancet. 1997 Nov 29;350(9091):1599-600. doi: 10.1016/s0140-6736(05)64015-9. No abstract available.
PubMed 9393345Sampson AP, Siddiqui S, Buchanan D, Howarth PH, Holgate ST, Holloway JW, Sayers I. Variant LTC(4) synthase allele modifies cysteinyl leukotriene synthesis in eosinophils and predicts clinical response to zafirlukast. Thorax. 2000 Oct;55 Suppl 2(Suppl 2):S28-31. doi: 10.1136/thorax.55.suppl_2.s28. No abstract available.
PubMed 10992553Anderson PJ, Garshick E, Blanchard JD, Feldman HA, Brain JD. Intersubject variability in particle deposition does not explain variability in responsiveness to methacholine. Am Rev Respir Dis. 1991 Sep;144(3 Pt 1):649-54. doi: 10.1164/ajrccm/144.3_Pt_1.649.
PubMed 1892306Kazani S, Sadeh J, Bunga S, Wechsler ME, Israel E. Cysteinyl leukotriene antagonism inhibits bronchoconstriction in response to hypertonic saline inhalation in asthma. Respir Med. 2011 May;105(5):667-73. doi: 10.1016/j.rmed.2010.11.025. Epub 2010 Dec 18.
PubMed 21169002
Study at a glance
From the registry record, last updated by the sponsor on 18 May 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Predicting the Bronchoprotective Response to a Leukotriene Modifier by Genetic Polymorphism
- ClinicalTrials.gov ID
- NCT00116324
- Acronym / sponsor ID
- 2002-P-001696
- Conditions
- Asthma
- Keywords
- Asthma, Leukotriene receptor antagonist, Hypertonic saline challenge
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 150 participants
- Lead sponsor
- Brigham and Women's HospitalUniversity, hospital or other
- Collaborators
- Merck Sharp & Dohme LLC
- Study start
- Apr 2003
- Study completion
- Dec 2006 (actual)
- First posted
- 29 Jun 2005 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to examine a specific variation in the genetic code for an enzyme (LTC4 synthase) which plays an important role in the airway inflammation associated with asthma. We hypothesize that asthmatic patients with this variant gene will have a better response to montelukast than patients with the wild type gene, as measured by the ability of montelukast to protect against a hypertonic saline challenge.
Detailed description
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.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- 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.
Key exclusion criteria (11 listed)
- 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.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Montelukast | Drug | – |
Primary outcome
Change in hypertonic saline PD20
2 secondary outcomes
Improved asthma control
Change in exhaled breath condensate inflammatory markers
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 May 2021.
- Background: PubMed 1320817Drazen JM, O'Brien J, Sparrow D, Weiss ST, Martins MA, Israel E, Fanta CH. Recovery of leukotriene E4 from the urine of patients with airway obstruction. Am Rev Respir Dis. 1992 Jul;146(1):104-8. doi: 10.1164/ajrccm/146.1.104.
- Background: PubMed 2564113Taylor GW, Taylor I, Black P, Maltby NH, Turner N, Fuller RW, Dollery CT. Urinary leukotriene E4 after antigen challenge and in acute asthma and allergic rhinitis. Lancet. 1989 Mar 18;1(8638):584-8. doi: 10.1016/s0140-6736(89)91611-5.
- Background: PubMed 10369259Drazen JM, Yandava CN, Dube L, Szczerback N, Hippensteel R, Pillari A, Israel E, Schork N, Silverman ES, Katz DA, Drajesk J. Pharmacogenetic association between ALOX5 promoter genotype and the response to anti-asthma treatment. Nat Genet. 1999 Jun;22(2):168-70. doi: 10.1038/9680.
- Background: PubMed 9062372In KH, Asano K, Beier D, Grobholz J, Finn PW, Silverman EK, Silverman ES, Collins T, Fischer AR, Keith TP, Serino K, Kim SW, De Sanctis GT, Yandava C, Pillari A, Rubin P, Kemp J, Israel E, Busse W, Ledford D, Murray JJ, Segal A, Tinkleman D, Drazen JM. Naturally occurring mutations in the human 5-lipoxygenase gene promoter that modify transcription factor binding and reporter gene transcription. J Clin Invest. 1997 Mar 1;99(5):1130-7. doi: 10.1172/JCI119241.
- Background: PubMed 9393345Sanak M, Simon HU, Szczeklik A. Leukotriene C4 synthase promoter polymorphism and risk of aspirin-induced asthma. Lancet. 1997 Nov 29;350(9091):1599-600. doi: 10.1016/s0140-6736(05)64015-9. No abstract available.
- Background: PubMed 10992553Sampson AP, Siddiqui S, Buchanan D, Howarth PH, Holgate ST, Holloway JW, Sayers I. Variant LTC(4) synthase allele modifies cysteinyl leukotriene synthesis in eosinophils and predicts clinical response to zafirlukast. Thorax. 2000 Oct;55 Suppl 2(Suppl 2):S28-31. doi: 10.1136/thorax.55.suppl_2.s28. No abstract available.
- Background: PubMed 1892306Anderson PJ, Garshick E, Blanchard JD, Feldman HA, Brain JD. Intersubject variability in particle deposition does not explain variability in responsiveness to methacholine. Am Rev Respir Dis. 1991 Sep;144(3 Pt 1):649-54. doi: 10.1164/ajrccm/144.3_Pt_1.649.
- Derived from this study: PubMed 21169002Kazani S, Sadeh J, Bunga S, Wechsler ME, Israel E. Cysteinyl leukotriene antagonism inhibits bronchoconstriction in response to hypertonic saline inhalation in asthma. Respir Med. 2011 May;105(5):667-73. doi: 10.1016/j.rmed.2010.11.025. Epub 2010 Dec 18.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Elliot Israel, MD principal investigator
Brigham and Women's Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Montelukast in people with Asthma, run by Brigham and Women's Hospital at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 May 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in hypertonic saline PD20. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00116324, which also lists 8 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 May 2021; AzTrials last refreshed its copy on 7 Nov 2026.