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CompletedNCT00705575ACQUIREUpdated May 30, 2011Results posted

Efficacy and Safety of the Combination Aliskiren (300 mg) and Hydrochlorothiazide (25mg) to Aliskiren (300mg) Monotherapy in Patients With Staged II Hypertension

A Phase 3 interventional study of Aliskiren/hydrochlorothiazide (HCTZ) (300/25 mg) and Aliskiren (300 mg) in Hypertension, sponsored by Novartis. Completed at 8 sites in 8 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2011-05-30.

Sponsored by Novartis · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
688
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This study will compare the efficacy and safety of once daily dosing of aliskiren monotherapy to once daily dosing of aliskiren and hydrochlorothiazide combination therapy in patients with Stage II hypertension over a period of 12 weeks.

02

Conditions studied

  • Hypertension

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Keywords

  • Essential Hypertension
  • Stage II
03

In context

Hypertension

6,689 studies on the registry are indexed under Hypertension; 965 are open to participants now.

This study's enrollment of 688 is above the median of 90 across 4,995 interventional studies indexed under Hypertension.

Browse Hypertension studies →

Lead sponsor

Novartis is the lead sponsor of 703 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Outpatients ≥18 years of age.
  • Patients with a diagnosis of Stage II hypertension, defined as mean sitting Systolic Blood Pressure (msSBP) ≥ 160 mmHg and \< 180 mmHg at Visit 2.

Exclusion criteria

Exclusion Criteria:

  • Severe hypertension defined as msSBP ≥ 180 mmHg and/or mean sitting Diastolic Blood Pressure (msDBP) ≥ 110 mmHg.
  • Secondary form of hypertension.
  • Current diagnosis of heart failure (New York Heart Association [NYHA] Class II-IV).
  • Current angina pectoris requiring pharmacological therapy (other than stable doses of oral or topical nitrates).
  • Second or third degree heart block without a pacemaker.
  • Concurrent potentially life threatening arrhythmia or symptomatic arrhythmia, atrial fibrillation or atrial flutter, during the 12 months prior to Visit 1.
  • Clinically significant valvular heart disease.
  • Previous history of hypertensive encephalopathy or stroke, Transcient Ischemic Attack (TIA), heart attack, coronary bypass surgery or any PCI.
  • Known Keith-Wagener grade III or IV hypertensive retinopathy.
  • In the month prior to Visit 1, patients on combination antihypertensive therapy that includes more than 2 classes of antihypertensive medications.
  • Patients on combined antihypertensive medication that contain two classes of antihypertensive medications are considered to take two antihypertensive medications.
  • Inability to discontinue prior antihypertensive or other CV medications as required by the protocol.
  • Patients with Type 1 diabetes mellitus.
  • Patients with Type 2 diabetes mellitus not well controlled .
  • Elevated Serum potassium (over 5.3 mEq/L (mmol/L).
  • Any surgical or medical condition or the use of any medication which might significantly alter the absorption, distribution, metabolism, or excretion of study drugs.

Other protocol-defined inclusion/exclusion criteria may apply.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
688 participants (actual)

Study arms

  • Experimental
    Aliskiren/hydrochlorothiazide (HCTZ) (300/25 mg)

    Drug: Aliskiren/hydrochlorothiazide (HCTZ) (300/25 mg)

  • Active comparator
    Aliskiren (300 mg)

    Drug: Aliskiren (300 mg)

Interventions

  • DrugAliskiren/hydrochlorothiazide (HCTZ) (300/25 mg)

    During the titration period, patients received aliskiren/hydrochlorothiazide (HCTZ) 150/12.5 mg for 1 week.

  • DrugAliskiren (300 mg)

    During the titration period, patients received aliskiren 150 mg for one week. Subsequently, patients were up-titrated and received aliskiren 300 mg.

06

What researchers measure

Primary outcomes

  1. Change in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to End of Study (Week 12)

    At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

    Time frame: Baseline to end of study (Week 12)

Secondary outcomes

  1. Change in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to Week 8

    At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

    Time frame: Baseline to Week 8

  2. Change in Mean Sitting Diastolic Blood Pressure (msDBP) From Baseline to Week 8 and to Week 12

    At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

    Time frame: Baseline to Week 12

  3. Percentage of Patients Achieving the Target Blood Pressure (msSBP < 140 mm Hg and msDBP < 90 mm Hg, and msSBP < 130 mm Hg and msDBP < 80 mm Hg for Diabetics) at Week 8 and Week 12

    At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

    Time frame: Baseline to Week 12

07

Results

Posted Jan 21, 2011

Participant flow

Participant flow — Overall Study
MilestoneAliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)
Started349339
Completed326293
Not completed2346
Withdrew: Abnormal laboratory value(s)03
Withdrew: Abnormal test procedure result(s)212
Withdrew: Adverse event1115
Withdrew: Lost to follow-up34
Withdrew: Protocol violation22
Withdrew: Withdrawal by subject510

Outcome measures

PrimaryChange in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to End of Study (Week 12)

At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

Time frame:
Baseline to end of study (Week 12)
Reported as:
Least squares mean · mm Hg
Change in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to End of Study (Week 12)
mm HgAliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)
Change in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to End of Study (Week 12)-30.01 ± 1.053-20.29 ± 1.067
SecondaryChange in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to Week 8

At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

Time frame:
Baseline to Week 8
Reported as:
Least squares mean · mm Hg
Change in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to Week 8
mm HgAliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)
Change in Mean Sitting Systolic Blood Pressure (msSBP) From Baseline to Week 8-30.09 ± 1.079-20.75 ± 1.094
SecondaryChange in Mean Sitting Diastolic Blood Pressure (msDBP) From Baseline to Week 8 and to Week 12

At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

Time frame:
Baseline to Week 12
Reported as:
Least squares mean · mm Hg
Change in Mean Sitting Diastolic Blood Pressure (msDBP) From Baseline to Week 8 and to Week 12
mm HgAliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)
Baseline to Week 8-13.69 ± 0.599-7.99 ± 0.607
Baseline to Week 12-12.64 ± 0.590-8.18 ± 0.598
SecondaryPercentage of Patients Achieving the Target Blood Pressure (msSBP < 140 mm Hg and msDBP < 90 mm Hg, and msSBP < 130 mm Hg and msDBP < 80 mm Hg for Diabetics) at Week 8 and Week 12

At the first visit, blood pressure (BP) was measured in both arms and the arm having the higher BP reading was the arm used for all subsequent readings throughout the study. Patients were required to sit for five minutes with feet flat on the floor, with arm resting so that the bottom of the cuff was at the same level as the heart. BP was measured three times at 1 to 2-minute intervals at each visit using the correct cuff size. The mean BP was calculated from the 3 readings.

Time frame:
Baseline to Week 12
Reported as:
Number · Percentage
Percentage of Patients Achieving the Target Blood Pressure (msSBP < 140 mm Hg and msDBP < 90 mm Hg, and msSBP < 130 mm Hg and msDBP < 80 mm Hg for Diabetics) at Week 8 and Week 12
PercentageAliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)
Baseline to Week 853.530.4
Baseline to Week 1254.632.2

Adverse events

Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Aliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)—2/349 (0.6%)27/349 (7.7%)
Aliskiren (300 mg)—4/339 (1.2%)34/339 (10%)
Most frequent serious events
Most frequent serious events
EventAliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)
NephrolithiasisRenal and urinary disorders0/3492/339
VertigoEar and labyrinth disorders0/3491/339
Fracture displacementInjury, poisoning and procedural complications0/3491/339
Radius fractureInjury, poisoning and procedural complications0/3491/339
HaemorrhoidsGastrointestinal disorders1/3490/339
Tendon ruptureInjury, poisoning and procedural complications1/3490/339
Most frequent other events
Most frequent other events
EventAliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)
HeadacheNervous system disorders14/34929/339
DizzinessNervous system disorders19/34910/339

Baseline characteristics

Age Continuous
Age Continuous(years)Aliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)Total
Mean57.4 ± 10.3356.4 ± 10.7356.9 ± 10.53
Sex: Female, Male
Sex: Female, Male(Participants)Aliskiren/Hydrochlorothiazide (HCTZ) (300/25 mg)Aliskiren (300 mg)Total
Female169172341
Male180167347
08

Study locations

8 sites
  • Investigative Site
    East Hanover, New Jersey 07936, United States
  • Investigative Site
    Buenos Aires, Argentina
  • Investigative Site
    Quito, Ecuador
  • Investigative Site
    Berlin, Germany
  • Investigative Site
    Guatemala City, Guatemala
  • Investigative Site
    Rome, Italy
  • Investigative Site
    Basel, Switzerland
  • Investigative Site
    Ankara, Turkey
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 30, 2011, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00705575
Lead sponsor
Novartis
First posted
Jun 26, 2008
Start date
Jun 2008
Primary completion
Apr 2009
Completion
Apr 2009
Results posted
Jan 21, 2011
Last update
May 30, 2011

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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