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Beta-2 Polymorphisms and Beta Receptor Selectivity

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ClinicalTrials.gov Identifier: NCT00214318
Recruitment Status : Completed
First Posted : September 21, 2005
Last Update Posted : October 8, 2015
Sponsor:
Information provided by (Responsible Party):
University of Wisconsin, Madison

Tracking Information
First Submitted Date  ICMJE September 14, 2005
First Posted Date  ICMJE September 21, 2005
Last Update Posted Date October 8, 2015
Study Start Date  ICMJE January 2005
Primary Completion Date Not Provided
Current Primary Outcome Measures  ICMJE
 (submitted: September 14, 2005)
The effect of beta-2 polymorphisms on potassium changes in response to terbutaline infusions
Original Primary Outcome Measures  ICMJE Same as current
Change History Complete list of historical versions of study NCT00214318 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures  ICMJE Not Provided
Original Secondary Outcome Measures  ICMJE Not Provided
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Beta-2 Polymorphisms and Beta Receptor Selectivity
Official Title  ICMJE The Effects of ß2 Polymorphisms on Beta Selectivity After ß-adrenergic Blockade in Patients With Heart Failure
Brief Summary We hypothesize that b2 adrenergic polymorphisms affect b-receptor selectivity in patients with heart failure treated with either a b1-selective or a b-nonselective agent. b-2 polymorphisms may contribute to differing responses to drug treatment with beta-blockers in heart failure. Characterizing these polymorphisms may help explain the variability in the degree of "selectivity" of action of b-blockers at the b receptor, namely if their action is specific for the b-1 or b-2 receptor. Part A was conducted at the University of Utah, and all subjects completed study related activities. Part B (sub-study) consists of genotyping of blood samples collected in part A, which will be completed at the University of Wisconsin. Sub-study (samples and DNA isolation) or Part B entailed analyzing an extra 10 mL of blood that was taken for DNA isolation. Genotyping (i.e. determination of genetic makeup) of beta adrenergic polymorphisms utilized polymerase chain reaction followed by pyrosequencing.
Detailed Description Not Provided
Study Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
Condition  ICMJE Heart Failure
Intervention  ICMJE Drug: Terbutaline plus Metoprolol or carvedilol
Study Arms  ICMJE Not Provided
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Enrollment  ICMJE
 (submitted: September 14, 2005)
25
Original Enrollment  ICMJE Same as current
Actual Study Completion Date  ICMJE February 2007
Primary Completion Date Not Provided
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • systolic dysfunction with ejection fraction ≤40%
  • symptomatic heart failure class 2-3
  • >18 years of age
  • optimal medical therapy of HF excluding the use of any beta-blockers within the previous 30 days of the study

Exclusion Criteria:

  • active myocarditis
  • hemodynamically significant valvular heart disease
  • hypertrophic cardiomyopathy
  • contra-indications to beta-blockers
  • concomitant use of beta-agonists
  • beta-antagonist or anti-arrhythmics
  • unstable angina
  • myocardial infarction or bypass surgery within 3 months
  • significant renal insufficiency [creatinine >2.5 mg/dL], liver disease, or anemia
Sex/Gender  ICMJE
Sexes Eligible for Study: All
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE No
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT00214318
Other Study ID Numbers  ICMJE M-2005-0006
Has Data Monitoring Committee No
U.S. FDA-regulated Product Not Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible Party University of Wisconsin, Madison
Study Sponsor  ICMJE University of Wisconsin, Madison
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Principal Investigator: orly vardeny University of Wisconsin, Madison
PRS Account University of Wisconsin, Madison
Verification Date October 2015

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP