Cardiovascular DiseasesNCT00086437
Pharmacogenetics of Hypertriglyceridemia in Hispanics
An observational study of Cardiovascular Diseases and Heart Diseases, run by University of California, Los Angeles.
Trial summary
To study the effect of genes on lipid-lowering drug treatment in hypertriglyceridemia. Read more about this study
- Who is it for?
- Ages 18 to 100 years
- Conditions the study is for
- Cardiovascular Diseases, Heart Diseases, Hypertriglyceridemia
- How many people
- 274 participants
- Where
- No sites listed yet
- Study dates
- Jul 2004to Jan 2010
- Phase
- Observational
- 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 100 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Hispanics with hypertriglyceridemia
Hispanics with hypertriglyceridemia
About this study
To study the effect of genes on lipid-lowering drug treatment in hypertriglyceridemia.
Read the detailed description
BACKGROUND:
Increased serum triglycerides are a significant independent risk factor for coronary artery disease and myocardial infarction. Besides typical lifestyle modification, the treatment with fibrates is standard in patients with hypertriglyceridemia. There is ample evidence that genetic factors influence triglyceride levels. Identifying genes, which affect triglyceride levels and moreover determining the response to fibrates is of great interest. Hispanics are among the populations with the highest prevalence of this disease. Therefore focusing on a high-risk population further adds to the overall significance of this study. Identifying genes and genetic mechanisms contributing to the treatment response can lead to new or improved treatment methods.
DESIGN NARRATIVE:
The study tests the hypothesis that differences in therapeutic effects of fibrates are related to variations in networks of genes regulating lipoprotein metabolism. An efficient approach for identifying and categorizing major gene variants is based on determination of sequence haplotypes. Only Hispanics will be studied to provide a homogenous population for this genetic study. Furthermore, Hispanics are the fastest growing ethnic group in the U.S. and have a higher prevalence of hypertriglyceridemia than other ethnic groups. The investigators will measure plasma triglycerides (TG), other lipids and lipoproteins, and lipoprotein particle size before and after treatment with fenofibrate in 800 Hispanic individuals with hypertriglyceridemia. They will reconstruct the haplotypes of 16 candidate genes known to regulate TG metabolism and mediate the effect of fibrates. The associations between phenotypes and major haplotypes will be analyzed in a two stage design, with the first half of the sample serving a hypothesis-generating function. Those candidate gene haplotypes that are found to be associated with quantitative traits and drug responses in the first half of the sample will then be tested for confirmation in the second half. In addition, data from the full cohort will be analyzed to identify additional pharmacogenetic associations that may require greater statistical power. Finally, direct fine mapping will be performed in the four most promising genes to identify the responsible variations.
- Medical subject headings
- Cardiovascular Diseases, Heart Diseases, Hypertriglyceridemia
What is being measured
The primary outcome is the main question the study is designed to answer.
Plasma triglycerides
Measured: 1 month
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 Jul 2004 (estimated)
- Study startJul 2004
- Primary completionJan 2010
- Study completionJan 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Cardiovascular DiseasesStudies of the same condition, open and under way.
- More trials run by University of California, Los AngelesThe 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
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 274 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of California, Los Angeles
- Sponsor type
- University, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
- Responsible party
- Principal investigator, Stanley Korenman, University of California, Los Angeles
- Investigators
- Stanley Korenman, MD, Principal investigator, University of California, Los Angeles
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00086437
- Sponsor's protocol ID
- 1260
- Other IDs
- R01HL076771
- Status last verified
- Dec 2015
- First submitted
- 1 Jul 2004
- Last updated
- 3 Dec 2015
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 3 Dec 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pharmacogenetics of Hypertriglyceridemia in Hispanics
- ClinicalTrials.gov ID
- NCT00086437
- Acronym / sponsor ID
- 1260
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 274 participants (actual)
- Lead sponsor
- University of California, Los AngelesUniversity, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
- Study start
- Jul 2004
- Primary completion
- Jan 2010 (actual)
- Study completion
- Jan 2010 (actual)
- First posted
- 5 Jul 2004 (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.
To study the effect of genes on lipid-lowering drug treatment in hypertriglyceridemia.
Detailed description
BACKGROUND:
Increased serum triglycerides are a significant independent risk factor for coronary artery disease and myocardial infarction. Besides typical lifestyle modification, the treatment with fibrates is standard in patients with hypertriglyceridemia. There is ample evidence that genetic factors influence triglyceride levels. Identifying genes, which affect triglyceride levels and moreover determining the response to fibrates is of great interest. Hispanics are among the populations with the highest prevalence of this disease. Therefore focusing on a high-risk population further adds to the overall significance of this study. Identifying genes and genetic mechanisms contributing to the treatment response can lead to new or improved treatment methods.
DESIGN NARRATIVE:
The study tests the hypothesis that differences in therapeutic effects of fibrates are related to variations in networks of genes regulating lipoprotein metabolism. An efficient approach for identifying and categorizing major gene variants is based on determination of sequence haplotypes. Only Hispanics will be studied to provide a homogenous population for this genetic study. Furthermore, Hispanics are the fastest growing ethnic group in the U.S. and have a higher prevalence of hypertriglyceridemia than other ethnic groups. The investigators will measure plasma triglycerides (TG), other lipids and lipoproteins, and lipoprotein particle size before and after treatment with fenofibrate in 800 Hispanic individuals with hypertriglyceridemia. They will reconstruct the haplotypes of 16 candidate genes known to regulate TG metabolism and mediate the effect of fibrates. The associations between phenotypes and major haplotypes will be analyzed in a two stage design, with the first half of the sample serving a hypothesis-generating function. Those candidate gene haplotypes that are found to be associated with quantitative traits and drug responses in the first half of the sample will then be tested for confirmation in the second half. In addition, data from the full cohort will be analyzed to identify additional pharmacogenetic associations that may require greater statistical power. Finally, direct fine mapping will be performed in the four most promising genes to identify the responsible variations.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 to 100 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Hispanics with hypertriglyceridemia
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Plasma triglycerides
Time frame: 1 month
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 3 Dec 2015.
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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.
Stanley Korenman, MD principal investigator
University of California, Los Angeles
Questions about this trial
What is this clinical trial studying?
An observational study of Cardiovascular Diseases and Heart Diseases, run by University of California, Los Angeles.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
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 3 Dec 2015. Status can change between updates, so confirm with the study contact before making plans.
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.
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?
Plasma triglycerides (time frame: 1 month). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 3 Dec 2015; AzTrials last refreshed its copy on 6 Nov 2026.