COMPARE: A Study to Compare the Effects of Coreg CR and Coreg IR on Heart Function in Subjects With Stable Chronic Heart Failure

Sponsor
CTI-1, LLC (Industry)
Overall Status
Completed
CT.gov ID
NCT00323037
Collaborator
CTI Clinical Trial and Consulting Services (Other), GlaxoSmithKline (Industry)
318
75
2
27
4.2
0.2

Study Details

Study Description

Brief Summary

The purpose of this study is to determine if Coreg CR is as effective as Coreg IR in improving heart function in subjects with stable chronic heart failure.

Condition or Disease Intervention/Treatment Phase
  • Drug: carvedilol controlled release
  • Drug: carvedilol immediate release
Phase 3

Detailed Description

Results of clinical trials have shown beta-blockers improve symptoms and left ventricular function, reduce hospitalizations and death in heart failure, and prolong survival [MERIT-HF, CIBIS-II, Packer, 1996]. Clinical guidelines mandate use of beta-blockers in treatment of subjects with heart failure.

Carvedilol (Coreg IR) is a multiple action adrenergic receptor blocker with alpha 1, beta 1 and beta 2 receptor blockade properties. The beta-adrenergic properties are non-selective for beta 1 and beta 2 adrenergic receptors. Coreg IR, administered twice daily, is marketed in the United States for long term treatment of mild-moderate hypertension, mild to severe heart failure and subjects surviving an acute myocardial infarction with left ventricular dysfunction with or without symptomatic heart failure.

Coreg IR significantly reduces all cause mortality and the need for cardiovascular hospitalization [Packer, 1996a; Packer, 1996b; Colucci, 1996; Cohn, 1997; Olsen, 1995; Sharpe 1997]. The effect of Coreg is dose dependent [Bristow, 1996]. In subjects treated long term after an acute myocardial infarction (MI) complicated by left ventricular systolic dysfunction, Coreg IR reduced the frequency of all-cause and cardiovascular mortality, and recurrent non-fatal MIs. These beneficial effects are additional to those of evidence-based treatments for acute MI, including ACE inhibitors [Dargie, 2001].

Left Ventricular End Systolic Volume Index (LVESVI) is an important measure of ventricular function and remodeling in the evaluation of heart failure. In controlled clinical trials, Coreg IR, administered twice daily, has reduced LVESVI in subjects with ischemic heart failure. An echocardiography substudy of the Australia-New Zealand Trial [Doughty, 1997], evaluated left ventricular remodeling in 123 subjects with ischemic heart failure with an LVEF < 45 randomized to carvedilol or placebo. The LVESVI was reduced by 6.2 + 1.6 ml/m2 after 6 months and 8.7 + 2.6 ml/m2 after 12 months of carvedilol therapy compared to the placebo treated subjects. Metra et al [Metra, 2000] observed the favorable effects of carvedilol compared with metoprolol on LVEF, LV stroke volume, and pulmonary artery pressure despite similar effects on cardiovascular outcome. Both groups also showed significant decreases in LV systolic volume. Doughty et al [Doughty, 2004] observed the favorable effects of carvedilol on LV remodeling, with improved LV end-systolic volume and ejection fraction, after 6 months of treatment.

Carvedilol phosphate CR (Coreg CR) is an approved, modified release, once-daily formulation of carvedilol that is hoped to provide an advance in patient care through improved compliance with prescribed dose.

The clinical experience with various formulations of Coreg CR is limited to eight single dose studies in healthy subjects and one repeated dose study in subjects with hypertension. In total 230, adult subjects have received at least one dose of Coreg IR or one of several CR formulations across nine studies. The subjects ranged in age from 18 to 63 years; 62% were male and 69% were white. The various formulations of Coreg CR capsules were safe and well tolerated in single dose pharmacokinetic studies in doses ranging from 6.25 to 60 mg in healthy subjects. The most common adverse events were headache, dizziness and orthostatic hypotension and are all known adverse events following administration of Coreg IR [GSK Study 386, 388, 399, 400, 402, 907].

This study will be the first controlled clinical study investigating the efficacy of treatment with Coreg CR formulation [Coreg CR filled with 7.5 mg of carvedilol phosphate immediate release (IRp) microparticles, 22.5 mg of carvedilol phosphate Micropump IIa MR microparticles, and 30 mg of carvedilol phosphate Micropump IIc MR microparticles] compared to Coreg IR evaluating LVESVI in subjects with stable chronic heart failure.

Study Design

Study Type:
Interventional
Actual Enrollment :
318 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Double (Participant, Investigator)
Primary Purpose:
Treatment
Official Title:
A Multicenter,Randomized, Double Blind, Double Dummy, Parallel Group Study to Compare Effects of Coreg CR and Coreg IR on Left Ventricular End Systolic Volume Index in Subjects With Stable Chronic Heart Failure
Study Start Date :
Mar 1, 2006
Actual Primary Completion Date :
Apr 1, 2008
Actual Study Completion Date :
Jun 1, 2008

Arms and Interventions

Arm Intervention/Treatment
Active Comparator: 1

Drug: carvedilol immediate release
Carvedilol immediate release (3.125, 6.25, 12.5 or 25 mg) and placebo, taken PO, twice-daily.
Other Names:
  • Coreg
  • Coreg IR
  • Active Comparator: 2

    Drug: carvedilol controlled release
    Carvedilol controlled release (10, 20, 40 or 80 mg) and placebo taken in the morning. Two placebos taken in the evening. A total of 4 pills will be taken PO daily.
    Other Names:
  • Coreg CR
  • Outcome Measures

    Primary Outcome Measures

    1. Change From Baseline in Left Ventricular End Systolic Volume Index (LVESVI) Characterized by 2-D Echocardiography [24 weeks after entry into the maintenance period]

      Maintenance Visit 3 minus Baseline. Maintenance Visit 3 occurred 24 weeks after entry into the maintenance period. The maintenance period started after completion of a titration period of variable duration.

    Secondary Outcome Measures

    1. Change From Baseline in Left Ventricular Ejection Fraction [24 weeks after entry into the maintenance period]

    2. Change From Baseline in Left Ventricular Remodeling (IVST, PWT, LVM, ESV, EDV, EDVI, ESD, EDD, Deceleration Time, and E:A Ratio) [24 weeks after entry into the maintenance period]

    3. Change From Baseline in BNP Levels [24 weeks after entry into the maintenance period]

    4. Incidence of Hospitalizations From Exacerbation of Heart Failure [Up to 32 weeks (titration and maintenance phases)]

    5. Hospitalizations From All Causes [Up to 32 weeks (titration and maintenance phases)]

    6. Drug Dose Tolerability [Up to 32 weeks (titration and maintenance phases)]

    7. Safety and Tolerability of Coreg CR [24 weeks after entry into the maintenance phase (after unblinding)]

    8. Drug Compliance [Up to 32 weeks (titration and maintenance phases)]

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Male or non-pregnant female

    • At least 18 years of age at the time informed consent is signed

    • Stable, chronic, mild to severe heart failure as defined as subjects with symptoms of heart failure who do not require IV diuretics, inotropes, or vasodilators or those that require support with a left ventricular assist device

    • Angiotensin converting enzyme inhibitors or angiotensin receptor blockers should be prescribed to all patients with HF due to LV systolic dysfunction with reduced LVEF unless contraindicated or intolerant to use

    • At screening, subject has an LVEF < 40 as measured by 2-D echocardiography

    • Willing to provide written informed consent

    Exclusion Criteria:
    • On beta-blocker therapy for greater than 42 days prior to consent

    • Acute ischemic coronary event or coronary revascularization (PTCA, CABG, thrombolysis) within 1 week of screening echocardiography

    • Scheduled or expected to be scheduled coronary revascularization within 4 weeks

    • Unstable angina (angina characterized by sudden changes in the severity or length of angina attacks or a decrease in level of exertion that precipitates an episode

    • Uncorrected primary obstructive or severe regurgitant valvular disease, nondilated (restrictive) or hypertrophic cardiomyopathies

    • Uncontrolled ventricular arrhythmias (symptomatic or sustained ventricular arrhythmias not controlled with antiarrhythmic therapy or an implantable defibrillator)

    • Current treatment of calcium channel blockers except for long acting dihydropyridines

    • Current treatment on any Class I or III antiarrhythmic, except amiodarone

    • History of sick sinus syndrome unless a pacemaker is in place

    • Second or third degree heart block unless a pacemaker is in place

    • Current clinical evidence of obstructive pulmonary disease (e.g., asthma or bronchitis) requiring inhaled or oral bronchodilator or steroid therapy; or having a history of bronchospastic disease not undergoing active therapy in whom, in the investigator's opinion, treatment with study medication could provoke bronchospasm

    • Expected biventricular pacemaker placement within 8 months of enrollment

    • Resting systolic blood pressure <90 mmHg (based on the average of 3 readings

    • Resting heart rate <50 beats per minute (bpm) (based on the average of 3 readings)

    • Current decompensated heart failure

    • Elevated liver enzymes (i.e., ALT or AST levels greater than 3 times upper limit of normal)

    • History of drug sensitivity or allergic reaction to alpha or beta-blockers

    • Contraindication or intolerance to beta-blockers

    • Pregnant or lactating women and women planning to become pregnant. NOTE: Female subjects must be post-menopausal (i.e., no menstrual period for a minimum of 6 months prior to screening), surgically sterilized, using a double barrier method contraceptive, or using Depo-Provera or implanted contraceptives for at least one month prior to screening and agree to continue to use the same contraceptive method throughout the study.

    • Use of an investigational drug within 30 days of enrollment

    • Participation in an investigational device trial within 30 days of enrollment

    • Known drug or alcohol abuse 1 year prior to enrollment

    • In the opinion of the investigator the subject is known to be noncompliant with prescribed medication regimen

    • Has any systemic disease, including cancer, with reduced life expectancy (<12 months)

    • Has a history of psychological illness/condition that interferes with ability to understand or complete requirements of the study.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Cardiology Associates Mobile Alabama United States 36608
    2 Mobile Heart Specialists Mobile Alabama United States 36608
    3 Mayo Clinic Arizona Phoenix Arizona United States 85054
    4 Scottsdale Cardiovascular Research Institute Scottsdale Arizona United States 85251
    5 South West Heart Tucson Arizona United States 85715
    6 Inland Heart Doctors Medical Group Corona California United States 92879
    7 Rancho Los Amigos USC Downey California United States 90242
    8 William Bowden, DO Private Practice Healdsburg California United States 95448
    9 Merced Heart Associates Merced California United States 95340
    10 Sutter Memorial Hospital Sacramento California United States 95819
    11 Southern California Cardiology Medical Group, Inc. San Diego California United States 92120
    12 Medvin Clinical Research Van Nuys California United States 91405
    13 Aurora Denver Cardiology Associates Denver Colorado United States 80218
    14 Medical Center of the Rockies Foundation Loveland Colorado United States 80538
    15 Bay Area Cardiology Brandon Florida United States 33511
    16 Clearwater Cardiovascular and Interventional Consultants Clearwater Florida United States 33756
    17 White-Wilson Medical Center, PA Fort Walton Beach Florida United States 32547
    18 South Florida International Cardiology Consultants, Inc. Miami Florida United States 33137-3732
    19 Palm Beach Cardiology Palm Beach Gardens Florida United States 33410
    20 Cardiac Disease Specialists, PC Atlanta Georgia United States 30309
    21 Harbin Clinic Rome Georgia United States 30165
    22 North Shore Cardiovascular Research Consortium Bannockburn Illinois United States 60015
    23 Saint Francis Hospital Evanston Illinois United States 60202
    24 Illinois Heart and Vascular Hinsdale Illinois United States 60521
    25 HeartCare Midwest Peoria Illinois United States 61614
    26 Rockford Cardiology Research Foundation Rockford Illinois United States 61107
    27 Prairie Cardiovascular Consultants Springfield Illinois United States 62701
    28 The Care Group LLC Indianapolis Indiana United States 46260
    29 River Cities Cardiology Jeffersonville Indiana United States 47130
    30 Iowa Heart Center West Des Moines Iowa United States 50266
    31 Mid-America Cardiology Kansas City Kansas United States 66160
    32 Via Christi Research, Inc. Wichita Kansas United States 67214
    33 Comprehensive Cardiology Associates Florence Kentucky United States 41042
    34 Cardiovascular Associates Louisville Kentucky United States 40205
    35 Louisville Cardiology Medical Group Louisville Kentucky United States 40207
    36 One Heart, LLC Baltimore Maryland United States 21215
    37 Minnesota Heart Clinic Edina Minnesota United States 55435
    38 Hennepin County Medical Center Minneapolis Minnesota United States 55415
    39 Regions Hospital Cardiology Research Saint Paul Minnesota United States 55101
    40 St. Paul Cardiology Saint Paul Minnesota United States 55102
    41 Cardiology Associates Research, LLC Tupelo Mississippi United States 38801
    42 Rocky Mountain Heart & Lung Kalispell Montana United States 59901
    43 Diagnostic and Clinical Cardiology West Orange New Jersey United States 07052
    44 University of New Mexico Albuquerque New Mexico United States 87131-0001
    45 Albany Associates in Cardiology Albany New York United States 12205
    46 Montefiore Medical Center Bronx New York United States 10467
    47 Buffalo Heart Group, LLP Buffalo New York United States 14215
    48 Long Island Heart Associates Mineola New York United States 11501
    49 New York Cardiovascular Associates New York New York United States 10035
    50 South Bay Cardiovascular Associates West Islip New York United States 11795
    51 University of North Carolina Chapel Hill North Carolina United States 27599
    52 LeBauer Cardiovascular Research Foundation Greensboro North Carolina United States 27401
    53 Wake Forest University Baptist Medical Center Winston-Salem North Carolina United States 27157
    54 Sterling Research Group Ltd. Cincinnati Ohio United States 45219
    55 The Lindner Clinical Trial Center Cincinnati Ohio United States 45219
    56 University Hospital Cincinnati Ohio United States 45267-0542
    57 Northwest Ohio Cardiology Consultants Toledo Ohio United States 43615
    58 Oklahoma Cardiovascular Research Group Oklahoma City Oklahoma United States 73120
    59 Samaritan Cardiology Corvallis Oregon United States 97330
    60 Blair Medical Associates Altoona Pennsylvania United States 16602
    61 Tri-State Medical Group Beaver Pennsylvania United States 15009
    62 Central Bucks Specialists Doylestown Pennsylvania United States 18901
    63 Cardiology Consultants of Philadelphia Philadelphia Pennsylvania United States 19148
    64 Mid State Medical Service Philipsburg Pennsylvania United States 16866
    65 Buxmont Cardiology Associates, PC Sellersville Pennsylvania United States 18960
    66 Rhode Island Heart Failure Center Providence Rhode Island United States 02903
    67 Charleston Cardiology Charleston South Carolina United States 29403
    68 South Carolina Heart Center Columbia South Carolina United States 29204
    69 Heart Specialists Friendswood Texas United States 77546
    70 Texas Cardiac Center Lubbock Texas United States 79410
    71 Intermountain Medical Center Murray Utah United States 84107
    72 Heart Center Salt Lake City Utah United States 84124
    73 Winchester Medical Center Winchester Virginia United States 22601
    74 Luther Midelfort Mayo Health Systems Eau Claire Wisconsin United States 54702
    75 Green Bay HeartCare Green Bay Wisconsin United States 54303

    Sponsors and Collaborators

    • CTI-1, LLC
    • CTI Clinical Trial and Consulting Services
    • GlaxoSmithKline

    Investigators

    • Study Chair: Barry Greenberg, MD,

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    Responsible Party:
    CTI-1, LLC
    ClinicalTrials.gov Identifier:
    NCT00323037
    Other Study ID Numbers:
    • 104852
    First Posted:
    May 9, 2006
    Last Update Posted:
    Feb 22, 2018
    Last Verified:
    Jan 1, 2018
    Keywords provided by CTI-1, LLC
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details The recruitment period was from April 2006 until August 2007.
    Pre-assignment Detail
    Arm/Group Title Coreg Immediate Release Coreg Controlled Release
    Arm/Group Description
    Period Title: Overall Study
    STARTED 165 153
    COMPLETED 132 126
    NOT COMPLETED 33 27

    Baseline Characteristics

    Arm/Group Title Coreg Immediate Release Coreg Controlled Release Total
    Arm/Group Description Total of all reporting groups
    Overall Participants 165 153 318
    Age, Customized (participants) [Number]
    < 65 years
    117
    70.9%
    110
    71.9%
    227
    71.4%
    65<=Age<75
    27
    16.4%
    21
    13.7%
    48
    15.1%
    Age>=75 years
    21
    12.7%
    22
    14.4%
    43
    13.5%
    Sex: Female, Male (Count of Participants)
    Female
    52
    31.5%
    45
    29.4%
    97
    30.5%
    Male
    113
    68.5%
    108
    70.6%
    221
    69.5%

    Outcome Measures

    1. Primary Outcome
    Title Change From Baseline in Left Ventricular End Systolic Volume Index (LVESVI) Characterized by 2-D Echocardiography
    Description Maintenance Visit 3 minus Baseline. Maintenance Visit 3 occurred 24 weeks after entry into the maintenance period. The maintenance period started after completion of a titration period of variable duration.
    Time Frame 24 weeks after entry into the maintenance period

    Outcome Measure Data

    Analysis Population Description
    Analysis was performed on the modified intent to treat population (mITT), which were those subjects with both a Baseline and an evaluable End of Study echocardiogram.
    Arm/Group Title Coreg Immediate Release Coreg Controlled Release
    Arm/Group Description
    Measure Participants 128 125
    Mean (Standard Deviation) [mL/m^2]
    -18.34
    (18.84)
    -20.81
    (25.43)
    2. Secondary Outcome
    Title Change From Baseline in Left Ventricular Ejection Fraction
    Description
    Time Frame 24 weeks after entry into the maintenance period

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description
    3. Secondary Outcome
    Title Change From Baseline in Left Ventricular Remodeling (IVST, PWT, LVM, ESV, EDV, EDVI, ESD, EDD, Deceleration Time, and E:A Ratio)
    Description
    Time Frame 24 weeks after entry into the maintenance period

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description
    4. Secondary Outcome
    Title Change From Baseline in BNP Levels
    Description
    Time Frame 24 weeks after entry into the maintenance period

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description
    5. Secondary Outcome
    Title Incidence of Hospitalizations From Exacerbation of Heart Failure
    Description
    Time Frame Up to 32 weeks (titration and maintenance phases)

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description
    6. Secondary Outcome
    Title Hospitalizations From All Causes
    Description
    Time Frame Up to 32 weeks (titration and maintenance phases)

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description
    7. Secondary Outcome
    Title Drug Dose Tolerability
    Description
    Time Frame Up to 32 weeks (titration and maintenance phases)

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description
    8. Secondary Outcome
    Title Safety and Tolerability of Coreg CR
    Description
    Time Frame 24 weeks after entry into the maintenance phase (after unblinding)

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description
    9. Secondary Outcome
    Title Drug Compliance
    Description
    Time Frame Up to 32 weeks (titration and maintenance phases)

    Outcome Measure Data

    Analysis Population Description
    [Not Specified]
    Arm/Group Title
    Arm/Group Description

    Adverse Events

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    The publishing party will submit any proposed manuscript or publication to the sponsor for comment at least 60 days prior to its release. The publishing party will make every reasonable attempt to incorporate comments received from the sponsor, and will upon request remove any previously undisclosed confidential information, prior to publication or disclosure. There will be no publication or publicizing of individual site data or results prior to the multicenter publication.

    Results Point of Contact

    Name/Title Sandy Stagge, RN, BSN
    Organization CTI Clinical Trial and Consulting Services
    Phone 513-619-1837
    Email sstagge@ctifacts.com
    Responsible Party:
    CTI-1, LLC
    ClinicalTrials.gov Identifier:
    NCT00323037
    Other Study ID Numbers:
    • 104852
    First Posted:
    May 9, 2006
    Last Update Posted:
    Feb 22, 2018
    Last Verified:
    Jan 1, 2018