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Myocardial InfarctionNCT00573092

Analyzing Gene Regions That May Interact With the Effectiveness of High Blood Pressure Drugs

An observational study of Myocardial Infarction and Cerebrovascular Accident, run by University of Washington at 1 site in United States.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

High blood pressure is one of the most common health problems in the United States. There are many drug treatment options for high blood pressure, but these medications are not always effective. Read more about this study

Who is it for?
Ages 30 to 79 years
How many people
0 participants
Where
1 siteUnited States
Study dates
Sep 2007to Nov 2016
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 30 to 79 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Data and specimens for this study will be collected from three population-based studies: Group Health population, Cardiovascular Heart Study, and Jackson Heart Study. The Group Health population will provide new DNA samples; the Cardiovascular Heart and Jackson Heart studies will provide existing DNA specimens to replicate the study findings from the Group Health population. The Cardiovascular Heart Study involves Americans over the age of 65. The Jackson Heart Study is a cardiovascular disease study in African Americans.

Who may be able to join

  • Experience of a first heart attack, stroke, or sudden death
  • Member of the Group Health Center (GHC) treated for high blood pressure
  • Enrolled at least 1 year in one of the three study populations
  • Treated for high blood pressure with one of the four major classes of high blood pressure drugs (diuretics, beta-blockers, ACE inhibitors, or calcium antagonists)

Who cannot join

None listed.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Cardiovascular Health Research Unit

    Seattle, Washington, 98101

Other trials in United States

About this study

Official title: Genome-Wide Case-Only Study of Antihypertensive Drug-Gene Interactions

High blood pressure is one of the most common health problems in the United States. There are many drug treatment options for high blood pressure, but these medications are not always effective. People with treated high blood pressure can still suffer from other serious cardiovascular health problems, including heart attack, sudden death, or stroke. Genetic variations may cause some people to be more susceptible to these cardiovascular outcomes despite treatment. This study will identify new gene regions that may influence the effectiveness of high blood pressure drugs in preventing the above mentioned cardiovascular conditions.

Read the detailed description

High blood pressure affects nearly one in three individuals in the United States. There are many factors that can cause high blood pressure, including family history and genetic traits, kidney disease, stress, diabetes, and diet. If left untreated, high blood pressure can increase one's risk for stroke, heart attack, and heart failure. There are four major classes of drugs used to treat high blood pressure, which include diuretics, beta blockers, angiotensin converting enzyme (ACE) inhibitors, and calcium antagonists. Each class works differently in treating high blood pressure, and certain gene regions may affect the effectiveness of the various high blood pressure drugs. The purpose of this study is to identify new gene regions that may influence the effectiveness of the four major high blood pressure drug types in preventing a heart attack, sudden death, or stroke.

This study will draw upon specimens and data from three large population-based studies: the Group Health population, the Cardiovascular Heart Study, and the Jackson Heart Study. New samples of DNA and laboratory data will only be collected from participants in the Group Health population. The remaining samples will be pre-existing samples from the other two studies. Through a whole-genome study of the DNA samples, researchers will distinguish genomic regions of interest for the four major drug classes to identify associations between the drugs and genes in the population. Researchers will further genotype the "interesting" genomic regions discovered in the whole-genome study. Ethnic-specific genetic variations will also be identified to fully characterize the genetic variations. The study will be replicated to assess the validity of the findings.

Keywords
Cardiovascular Epidemiology, Genomics, Genome-Wide Association Study
Medical subject headings
Myocardial Infarction, Stroke, Death, Sudden, Cardiac

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT00573092
Study groupRoleWhat they receive
1Data and specimens from three large population-based studies of heart attack, sudden death, and stroke in people treated for high blood pressure with one of the four major classes of high blood pressure drugs

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Genomic regions for each of the four major drug classes that influence drug and gene interaction

    Measured: Measured at completion of genetic analysis

Secondary outcomes (1)
  1. Ethnic-specific genetic variations for each of the four major drug classes that influence drug and gene interaction

    Measured: Measured at completion of genetic analysis

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted13 Dec 2007 (estimated)
  2. Study startSep 2007
  3. Primary completionNov 2016
  4. Study completionNov 2016

Why it stopped: Withdrawn

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00573092
Sponsor's protocol ID
1411
Other IDs
R01HL085251-01A1
Status last verified
Nov 2016
First submitted
12 Dec 2007
Last updated
9 Nov 2016
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

An observational study of Myocardial Infarction and Cerebrovascular Accident, run by University of Washington 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 0 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: withdrawn, as of the sponsor's last update on 9 Nov 2016. 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.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

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?

Genomic regions for each of the four major drug classes that influence drug and gene interaction (time frame: Measured at completion of genetic analysis). 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 9 Nov 2016.

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