Full Text View
Tabular View
Study Results
Related Studies
A 52 Week Study to Evaluate the Effects of Losartan With or Without HCTZ on Plasma Glucose, Metabolic Parameters, Blood Pressure in Hypertensive Patients With Metabolic Syndrome
This study has been completed.
Study NCT00546052   Information provided by Merck
Study First Received: October 17, 2007   Last Updated: June 29, 2009   History of Changes
Results First Received: January 8, 2009  
Study Type: Interventional
Study Design: Allocation: Non-Randomized;   Control: Uncontrolled;   Endpoint Classification: Safety/Efficacy Study;   Intervention Model: Single Group Assignment;   Masking: Open Label;   Primary Purpose: Treatment
Conditions: Hypertension
Metabolic Disorder
Intervention: Drug: losartan potassium (+) hydrochlorothiazide

  Participant Flow
  Hide Participant Flow

Recruitment Details
Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations
First Patient In: 12-Sep-2005 Last Patient In: 29-Dec-2006 Last Patient Last Visit: 31-Jan-08 Total number of Sites (General Practitioners and Family Physicians in Canada): 209

Pre-Assignment Details
Significant events and approaches for the overall study following participant enrollment, but prior to group assignment
24 patients not included in the Intention to Treat (ITT) analysis because they did not receive study medication and had no follow up visits. Total ITT population = 1714.

Reporting Groups
  Description
Losartan +/- Hydrochlorothiazide Patients could be titrated up from Cozaar 50 mg to Cozaar 100mg to losartan 100 mg + Hydrochlorothiazide 12.5 mg and losartan 100mg/ Hydrochlorothiazide 25 mg, in sequence at any subsequent visits only if needed to obtain Blood Pressure under 140/90 mm Hg.

Participant Flow:   Overall Study
  Losartan +/- Hydrochlorothiazide
STARTED   1738  
      Week 4               1714  
      Week 8               1680  
      Week 12               1650  
      Week 32               1583  
      Week 52               1511  
COMPLETED   1511  
NOT COMPLETED   227  
      Adverse Event               47  
      Lost to Follow-up               144  
      Protocol Violation               9  
      Withdrawal by Subject               20  
      Non Compliance               7  



  Baseline Characteristics
  Hide Baseline Characteristics

Reporting Groups
  Description
Losartan +/- Hydrochlorothiazide Patients could be titrated up from Cozaar 50 mg to Cozaar 100mg to losartan 100 mg + Hydrochlorothiazide 12.5 mg and losartan 100mg/ Hydrochlorothiazide 25 mg, in sequence at any subsequent visits only if needed to obtain Blood Pressure under 140/90 mm Hg.

Baseline Measures
  Losartan +/- Hydrochlorothiazide
Number of Participants  
[units: participants]
1714
Age  
[units: Years]
Mean ± Standard Deviation
54.93 ± 11.29
Age, Customized  
[units: participants]
 
<=45.00 326
45.01 - 52.00 359
52.01 - 58.00 356
58.01 - 65.00 346
>=65.00 326
Missing 1
Gender  
[units: participants]
 
Female 734
Male 980
Race/Ethnicity, Customized  
[units: participants]
 
Caucasian 1451
Black 32
Asian 200
Native American 11
Other 19
Missing 1
Body Mass Index  
[units: Kg/m2]
Mean ± Standard Deviation
33.23 ± 5.59
C-Reactive Protein  
[units: mg/L]
Mean ± Standard Deviation
5.4 ± 8.8
Diastolic Blood Pressure  
[units: mm Hg]
Mean ± Standard Deviation
90.54 ± 8.16
Fasting Blood Glucose  
[units: mmol/L]
Mean ± Standard Deviation
5.7 ± 0.7
Heart Rate  
[units: Beats per Minute (BPM)]
Mean ± Standard Deviation
75 ± 8.0
Hemoglobin A1c  
[units: Percent]
Mean ± Standard Deviation
5.71 ± 0.59
High Density Lipoprotein-C  
[units: mol/L]
Mean ± Standard Deviation
1.23 ± 0.33
Low Density Lipoprotein-C  
[units: mmol/L]
Mean ± Standard Deviation
3.17 ± 0.93
Systolic Blood Pressure  
[units: mm Hg]
Mean ± Standard Deviation
148.22 ± 10.72
Total Cholesterol  
[units: mmol/L]
Mean ± Standard Deviation
5.36 ± 1.05
Triglycerides  
[units: mmol/L]
Mean ± Standard Deviation
2.16 ± 1.16
Uric Acid  
[units: mmol/L]
Mean ± Standard Deviation
365.8 ± 85.4
Weight  
[units: Kilograms (Kg)]
Mean ± Standard Deviation
92.5 ± 18.1



  Outcome Measures
  Show All Outcome Measures

1.  Primary:   Change in Hemoglobin A1c Between 52 Weeks and Baseline   [ Time Frame: 52 Weeks - Baseline ]

2.  Primary:   Change in Fasting Blood Glucose Between Baseline and 52 Weeks Assessments   [ Time Frame: 52 Weeks - Baseline ]

3.  Secondary:   Target Blood Pressure   [ Time Frame: 52 Weeks ]

4.  Secondary:   Change in Systolic Blood Pressure Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

5.  Secondary:   Change in Diastolic Blood Pressure Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

6.  Other Pre-specified:   Change in Waist Circumference Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

7.  Other Pre-specified:   Change in Body Mass Index Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

8.  Other Pre-specified:   Percent Change in Low Density Lipoprotein-C Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

9.  Other Pre-specified:   Percent Change in High Density Lipoprotein-C Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

10.  Other Pre-specified:   Percent Change in Triglycerides Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

11.  Other Pre-specified:   Percent Change in Total Cholesterol Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

12.  Other Pre-specified:   Absolute Change in Uric Acid Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]

13.  Other Pre-specified:   Absolute Change in C Reactive Protein Between Baseline and 52 Week Assessments   [ Time Frame: 52 Weeks - Baseline ]


  Serious Adverse Events
  Show Serious Adverse Events


  Other Adverse Events
  Show Other Adverse Events


  More Information
  Hide More Information

Certain Agreements:  
All Principal Investigators ARE employed by the organization sponsoring the study.


Limitations and Caveats
Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data
No text entered.  


Results Point of Contact:  
Name/Title: Senior Vice President, Clinical and Quantitative Sciences
Organization: Merck & Co., Inc.
phone: 1-800-672-6372


No publications provided


Responsible Party: Merck & Co., Inc. ( Executive Vice President, Clinical and Quantitative Sciences )
Study ID Numbers: 2007_030, MK0954A-331
Study First Received: October 17, 2007
Results First Received: January 8, 2009
Last Updated: June 29, 2009
ClinicalTrials.gov Identifier: NCT00546052     History of Changes
Health Authority: Canada: Health Canada