NCT00546754

Brief Summary

To evaluate the blood pressure efficacy between losartan and valsartan at equivalent dosage during a 3 months treatment.

Trial Health

100
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
808

participants targeted

Target at P75+ for phase_3 hypertension

Timeline
Completed

Started May 2007

Typical duration for phase_3 hypertension

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2007

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

October 17, 2007

Completed
2 days until next milestone

First Posted

Study publicly available on registry

October 19, 2007

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2009

Completed
1 month until next milestone

Study Completion

Last participant's last visit for all outcomes

May 1, 2009

Completed
12 months until next milestone

Results Posted

Study results publicly available

April 13, 2010

Completed
Last Updated

May 16, 2024

Status Verified

February 1, 2022

Enrollment Period

1.9 years

First QC Date

October 17, 2007

Results QC Date

March 26, 2010

Last Update Submit

May 8, 2024

Conditions

Outcome Measures

Primary Outcomes (2)

  • Change in Systolic Blood Pressure From Baseline to Week 12

    Baseline and Week 12

  • Change in Diastolic Blood Pressure From Baseline to Week 12

    Baseline and Week 12

Secondary Outcomes (11)

  • Change in Systolic Blood Pressure From Baseline to Week 6

    Baseline and Week 6

  • Change in Diastolic Blood Pressure From Baseline to Week 6

    Baseline and Week 6

  • Number of Patients Achieving Target Blood Pressure at Week 6

    Week 6

  • Number of Patients Achieving Target Blood Pressure at Week 12

    12 Weeks

  • Time to Achieve Target Blood Pressure

    12 weeks

  • +6 more secondary outcomes

Study Arms (2)

1

EXPERIMENTAL

Drug Arm

Drug: losartan potassium (+) hydrochlorothiazide

2

ACTIVE COMPARATOR

active comparator

Drug: Comparator: Valsartan (+) Hydrochlorothiazide

Interventions

losartan potassium 50 mg/12.5 Hydrochlorothiazide (HCTZ) titrated as needed to losartan potassium 100 mg/25 mg Hydrochlorothiazide

1

Valsartan 80 mg/ Hydrochlorothiazide 12.5 mg/day titrated as needed to valsartan 160 mg/25 mg Hydrochlorothiazide

2

Eligibility Criteria

Age18 Years - 75 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • An Adult Patient 18 to 75 Years Of Age
  • Patient with essential hypertension receiving an antihypertensive agent in monotherapy for at least 4 weeks for whom the antihypertensive agent can (and will) be discontinued and whose blood pressure is not controlled:
  • Either systolic or diastolic blood pressure \> 140/90 mm Hg up to 180/110 mm Hg (inclusive)
  • Either systolic or diastolic blood pressure \> 130/80 mm Hg up to 160/100 mm Hg (inclusive) for diabetic patients
  • Patient is male or a female who is highly unlikely to conceive as she falls into one of the categories listed below:
  • Surgically sterilized female
  • Postmenopausal female \> 45 years of age with \> 2 years since her last menses
  • Non-sterilized pre-menopausal female who agrees to: (1) use 2 adequate methods of contraception to prevent pregnancy \[either 2 barrier methods or a barrier method plus a hormonal method\]; or (2) abstain from heterosexual activity throughout the study starting with Visit 1 and for 14 days after the last dose of study medication; or (3) only engage in heterosexual activity with surgically sterilized male partner(s) throughout the study starting with Visit 1 and for 14 days after the last dose of study medication
  • Patient judged to be in otherwise good, stable health on the basis of medical history and physical examination

You may not qualify if:

  • Known secondary hypertension of any aetiology (e.g., uncorrected renal artery stenosis, malignant hypertension, or hypertensive encephalopathy)
  • Patient Needing An Initiation Of A Lipid Lowering Agent Or A Modification Of His Lipid Therapy At Visit 1 Or During The Study Period (12 Weeks)
  • Patient taking allopurinol
  • Patient Previously Shown To Be Intolerant To Any Component Of Losartan Valsartan, Or HCTZ Or With A Documented History Of Angioedema/Anaphylaxis
  • Patient With Confirmed Clinically Significant Renal Or Hepatic Dysfunction And/Or Electrolyte Imbalance Laboratory Test Within The Last 3 Months Prior To Visit 1: Serum Creatinine \> 130 Umol/L Or Creatinine Clearance \< 45 Ml/Min, Aspartate transaminase (AST) \> 2 Times Above The Normal Range, Alanine transaminase (ALT) \> 2 Times Above The Normal Range, Serum Potassium \< 3.5 Or \> 5.5 Meq/L
  • Patient with osteoarthritis who has undergone hip or knee replacement within the last 4 months
  • Patient with chronic inflammatory conditions such as rheumatoid arthritis, lupus, inflammatory bowel disease and those that need a chronic inflammatory therapy such as prednisone or other steroid agents
  • Patient with symptomatic heart failure (classes 3 and 4)
  • Patient with a history of stroke within the last 6 months
  • Patient with coronary heart disease: has undergone percutaneous coronary angioplasty, has had coronary artery bypass, has had past myocardial infarction, all that occurred less than 6 months prior to visit 1 or has unstable angina
  • Patient having participated in an investigational drug program in the last 30 days (prior to Visit 1)
  • Unable or unwilling to comply with the protocol, therefore likely to leave the trial before its completion
  • Patient intends to move or to vacation away from home during the course of the study which would interfere with the scheduled visits.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Hypertension

Interventions

hydrochlorothiazide, losartan drug combinationHydrochlorothiazide

Condition Hierarchy (Ancestors)

Vascular DiseasesCardiovascular Diseases

Intervention Hierarchy (Ancestors)

ChlorothiazideBenzothiadiazinesSulfonamidesSulfonesSulfur CompoundsOrganic ChemicalsThiazidesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-RingHeterocyclic Compounds

Results Point of Contact

Title
Senior Vice President, Global Clinical Development
Organization
Merck Sharp & Dohme Corp

Study Officials

  • Medical Monitor

    Merck Sharp & Dohme LLC

    STUDY DIRECTOR

Publication Agreements

PI is Sponsor Employee
No
Restriction Type
OTHER
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
phase 3
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

October 17, 2007

First Posted

October 19, 2007

Study Start

May 1, 2007

Primary Completion

April 1, 2009

Study Completion

May 1, 2009

Last Updated

May 16, 2024

Results First Posted

April 13, 2010

Record last verified: 2022-02

Data Sharing

IPD Sharing
Will not share