Combination of OLMesartan and CCB or Low Dose Diuretics in High Risk Elderly Hypertensive Patients Study (COLM-Study)

This study has been completed.
Sponsor:
Collaborator:
Japan Heart Foundation
Information provided by (Responsible Party):
COLM Study Research Organization
ClinicalTrials.gov Identifier:
NCT00454662
First received: March 30, 2007
Last updated: January 22, 2013
Last verified: January 2013
  Purpose

The purpose of this study is to investigate which combination therapy is more effective in reducing the incidence of cardiovascular events in Japanese elderly high-risk hypertensive patients: AT1 subtype angiotensin II receptor antagonist/calcium channel blocker or AT1 subtype angiotensin II receptor antagonist/low dose diuretic.


Condition Intervention Phase
Hypertension
Cardiovascular Disease
Diabetes
Drug: olmesartan medoxomil / amlodipine or azelnidipine
Drug: olmesartan medoxomil / low dose thiazide type drug
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Combination of OLMesartan and Calcium Channel Blocker or Low Dose Diuretics in High Risk Elderly Hypertensive Patients Study (COLM-Study)

Resource links provided by NLM:


Further study details as provided by COLM Study Research Organization:

Primary Outcome Measures:
  • Composite of following events: Sudden death, Cerebrovascular events, Coronary events, Renal dysfunction [ Time Frame: 3 to 4.5 years (duration of planned treatment phase) ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • All deaths, Death from cardiovascular events, Glucose metabolism, Incidence of primary outcomes events, New onset of atrial fibrillation, Safety, Withdrawal rate [ Time Frame: 3 to 4.5 years (duration of planned treatment phase) ] [ Designated as safety issue: Yes ]

Enrollment: 5141
Study Start Date: April 2007
Study Completion Date: September 2011
Primary Completion Date: September 2011 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
olmesartan medoxomil, Calcium channel blockers (amlodipine, azelnidipine)
Drug: olmesartan medoxomil / amlodipine or azelnidipine
AT1 subtype angiotensin II receptor antagonist / calcium channel blocker : 5-40mg of olmesartan medoxomil / 2.5-5mg of amlodipine or 8-16mg of azelnidipine
Active Comparator: 2
AT1 subtype angiotensin II receptor antagonist/low dose diuretic
Drug: olmesartan medoxomil / low dose thiazide type drug
AT1 subtype angiotensin II receptor antagonist / low dose diuretic : 5-40mg of olmesartan medoxomil / low dose thiazide type drug

Detailed Description:

Recently, antihypertensive combination therapies have been recommended by various guidelines because of their additive effects. Combination therapies of AT1 subtype angiotensin II receptor antagonist and calcium channel blocker or low dose diuretic have shown pharmacological benefit. However, reduction of cardiovascular events and safety profile of these combination therapies under same level of antihypertensive target have not been investigated yet.

In this study, primary objective is to compare two combination therapies when antihypertensive target is 140/90mmHg in elderly hypertensive patients with high cardiovascular risk.

Further study details as provided by COLM-Study data center

Primary Outcomes: A composite of fatal and non-fatal cardiovascular events: Sudden death (death of endogenous origin within 24 hours after acute onset); Cerebrovascular events (new occurrence or recurrence of a cerebral infarction, cerebral hemorrhage, subarachnoid hemorrhage or transient ischemic attack); Coronary events (new occurrence or recurrence of a myocardial infarction, coronary revascularization[PCI or CABG], hospitalization for angina pectoris, hospitalization for heart failure); Renal dysfunction (doubling of serum creatinine and creatinine ≥2.0 mg/dl, end stage renal disease) Secondary Outcomes: All deaths; Death from cardiovascular events; Effects on glucose metabolism(fasting plasma glucose, postprandial glucose, new onset of diabetes mellitus); Incidence of primary outcomes events; New occurrence of atrial fibrillation; Safety; Proportion of the subjects who withdrew from the allocated treatment

  Eligibility

Ages Eligible for Study:   65 Years to 84 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Outpatients aged 65 years or older, and less than 85 years (at the time of informed consent), regardless of sex
  • Systolic blood pressure (SBP) ≥140 mmHg or diastolic blood pressure (DBP) ≥90 mmHg in a sitting position on two consecutive measurements at clinic during use of 1 or more antihypertensive medications.
  • Systolic blood pressure (SBP) ≥160 mmHg or diastolic blood pressure (DBP) ≥100 mmHg in a sitting position on two consecutive measurements at clinic without antihypertensive medication.
  • Require at least one of the following medical history or risk factors
  • Medical history

    • Cerebrovascular accident: cerebral infarction, brain hemorrhage, subarachnoid hemorrhage(6 months or more prior to registration)
    • Myocardial infarction, coronary revascularization (PCI or CABG) (6 months or more prior to registration)
    • Angina pectoris (except for the patients having history of hospitalization within 6 months prior to registration)
  • Risk factors

    • Male
    • Current diabetes mellitus, fasting glucose ≥ 110mg/dL or postprandial glucose ≥ 140mg/dl
    • Hypercholesterolemia (Total cholesterol ≥ 260mg/dL)
    • Low HDL cholesterolemia (HDL-C <40mg/dL)
    • Microalbuminuria (albumin/cr ≥ 30mg/gCr) or proteinuria (protein ≥ 1+)
    • Left ventricular hypertrophy (ST-T change in the ECG and SV1+RV5 ≥ 35mm, or left ventricular mass index: male ≥ 125 g/m2, female ≥ 110 g/m2)

Exclusion Criteria:

  • Secondary hypertension or malignant hypertension
  • History of cerebrovascular accident (including TIA) or myocardial infarction within 6 months before registration
  • Percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) done within 6 months before registration or scheduled
  • History of hospitalization for angina pectoris or heart failure within 6 months before registration
  • Severe heart failure (New York Heart Association [NYHA] functional class III or more severe)
  • Complications of atrial fibrillation, atrial flutter or severe arrhythmia
  • Severe hepatic or renal dysfunction (including current treatment of dialysis or renal dysfunction with serum creatinine ≥ 2.0mg/dL)
  • Not appropriate for change to the study drugs from current therapy for concurrent disease including coronary diseases (i.e. calcium channel blockers, diuretics, etc)
  • History of serious side effect from study drugs (AT1 subtype angiotensin II receptor antagonist, calcium channel blocker, diuretic)
  • Life threatening condition (malignant tumor, etc)
  • Not suited to be study subject judged by a study physician
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00454662

Locations
Japan
COLM-Study Data Center
Kamiyacho MT Bld.14F, 4-3-20 Toranomon Minato-ku, Tokyo, Japan, 105-0001
Sponsors and Collaborators
COLM Study Research Organization
Japan Heart Foundation
Investigators
Study Chair: Toshio Ogihara, MD Emeritus Professor Osaka University
Study Chair: Takao Saruta, MD Emeritus Professor Keio University
  More Information

Additional Information:
No publications provided

Responsible Party: COLM Study Research Organization
ClinicalTrials.gov Identifier: NCT00454662     History of Changes
Other Study ID Numbers: 31-JAN-2007, COLM001
Study First Received: March 30, 2007
Last Updated: January 22, 2013
Health Authority: Japan: Ministry of Health, Labor and Welfare

Keywords provided by COLM Study Research Organization:
Elderly
Hypertension
Cardiovascular Diseases
Angiotensin II Type 1 Receptor Blockers
Calcium Channel Blockers
Diuretics
Combination Drug Therapy
Diabetes

Additional relevant MeSH terms:
Cardiovascular Diseases
Hypertension
Vascular Diseases
Amlodipine
Angiotensin II
Angiotensin II Type 1 Receptor Blockers
Angiotensin Receptor Antagonists
Calcium Channel Blockers
Diuretics
Olmesartan
Olmesartan medoxomil
Antihypertensive Agents
Cardiovascular Agents
Membrane Transport Modulators
Molecular Mechanisms of Pharmacological Action
Natriuretic Agents
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses
Vasoconstrictor Agents
Vasodilator Agents

ClinicalTrials.gov processed this record on October 23, 2014