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Telmisartan/Amlodipine (80/5) vs. Telmisartan/Amlodipine (40/5) vs. Amlodipine 10 or 5 in Resistant Hypertension

An Eight-week Randomized, 4-arm, Double-blind Study to Compare the Efficacy and Safety of Combinations of Telmisartan 40mg + Amlodipine 5mg Versus Telmisartan 80mg + Amlodipine 5mg Versus Amlodipine 5mg Versus Amlodipine 10mg Monotherapy in Patients With Hypertension Who Fail to Respond Adequately to Treatment With Amlodipine 5mg Monotherapy

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00558428
Enrollment
1098
Registered
2007-11-15
Start date
2007-10-31
Completion date
Unknown
Last updated
2014-06-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypertension

Brief summary

The primary objectives of this trial are (a) to demonstrate that the fixed-dose combination T40/A5 or the fixed-dose combination T80/A5 is superior in reducing blood pressure at eight weeks compared with A5 (b) to demonstrate that the fixed-dose combination T40/A5 or the fixed-dose combination T80/A5 is not inferior in reducing blood pressure at eight weeks compared with A10 and (c) to demonstrate that the incidence of oedema on the fixed-dose combination T40/A5 pooled with the fixed-dose combination T80/A5 is superior (less oedema) to A10 in patients who fail to respond adequately to six weeks treatment with A5.

Interventions

Sponsors

Boehringer Ingelheim
Lead SponsorINDUSTRY

Study design

Intervention model
PARALLEL
Primary purpose
TREATMENT

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. patients aged at least 18 years at the date of signing the consent form 2. diagnosis of essential hypertension and blood pressure not adequately controlled before enrolment in the study 3. failure to respond adequately to six weeks treatment with amlodipine 5 mg monotherapy 4. able to stop any current antihypertensive therapy without unacceptable risk to the patient (Investigator's decision) 5. willing and able to provide written informed consent (in accordance with Good Clinical Practice and local legislation).

Exclusion criteria

1. are not practising acceptable means of birth control or do not plan to continue using acceptable means of birth control throughout the study and do not agree to submit to pregnancy testing during participation in the trial. Acceptable methods of birth control include the transdermal patch, oral, implantable or injectable contraceptives, sexual abstinence and vasectomised partner. 2. known or suspected secondary hypertension 3. mean seated systolic blood pressure (SBP) over 200 mmHg and/or mean seated diastolic blood pressure (DBP) over 120 mmHg at Visit 1 or 2 or mean seated SBP over 180 mmHg and/or mean seated DBP over 120 mmHg at the end of the run-in period (Visit 3) 4. any clinically significant hepatic impairment (e.g. clinically significant cholestasis, biliary obstructive disorder or hepatic insufficiency) 5. severe renal impairment (e.g. serum creatinine \>3.0 mg/dL or \>265 mcmol/L, known creatinine clearance \<30mL/min or clinical markers of severe renal impairment) 6. bilateral renal artery stenosis or renal artery stenosis in a solitary kidney or post-renal transplant 7. clinically relevant hyperkalaemia 8. uncorrected volume or sodium depletion. 9. primary aldosteronism. 10. hereditary fructose or lactose intolerance

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Trough Seated Diastolic Blood Pressure (DBP)End of study (8 weeks or last value on treatment)Change from baseline to the end of study in trough DBP
Number of Patients With OedemaDuring randomised treatment period (8 weeks was the planned end of treatment, some of the measurements analysed as end of study can be at 4 weeks or at any point on randomised treatment)Patients from the treated set who experienced at least one case of general oedema.

Secondary

MeasureTime frameDescription
Trough Seated DBP ResponseEnd of study (8 weeks or last value on treatment)The number of patients who reach the target DBP of \<90mmHg or had a reduction in DBP \>= 10mmHg
Trough Seated SBP ControlEnd of study (8 weeks or last value on treatment)The number of patients who reach the target SBP of \<140mmHg
Change From Baseline in Trough Seated Systolic Blood Pressure (SBP)End of study (8 weeks or last value on treatment)Change from baseline to the end of study in trough SBP
Trough Seated Blood Pressure (BP) Normality ClassesEnd of study (8 weeks or last value on treatment)The number of patients who reach predefined BP categories: * Optimal - SBP\<120 and DBP\<80 mmHg * Normal - SBP\<130 and DBP\<85 mmHg * High-normal - SBP\<140 DBP\<90 mmHg * Stage 1 hypertension - SBP\<160 and DBP\<100 * Stage 2 hypertension SBP\>=160 and DBP\>=100 mmHg
Trough Seated SBP ResponseEnd of study (8 weeks or last value on treatment)The number of patients who reach the target SBP of \<140mmHg or had a reduction in SBP \>= 15 mmHg
Trough Seated Diastolic Blood Pressure ControlEnd of study (8 weeks or last value on treatment)The number of patients who reach the target DBP of \<90mmHg

Countries

Belgium, Canada, Denmark, Finland, France, Netherlands, Norway, Philippines, South Africa, South Korea, Sweden, Taiwan

Participant flow

Pre-assignment details

1487 were enrolled, 1098 entered but 1 patient not treated.

Participants by arm

ArmCount
Amlodipine 5mg267
Amlodipine 10mg276
Telmisartan 40mg and Amlodipine 5mg277
Telmisartan 80mg and Amlodipine 5mg277
Total1,097

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event62234
Overall StudyConsent withdrawn2101
Overall StudyLack of Efficacy0012
Overall StudyLost to Follow-up0100
Overall StudyNon compliant with protocol1003
Overall StudyOther3001

Baseline characteristics

CharacteristicTotalAmlodipine 10mgAmlodipine 5mgTelmisartan 40mg and Amlodipine 5mgTelmisartan 80mg and Amlodipine 5mg
Age, Continuous54.2 Years
STANDARD_DEVIATION 10.6
54.3 Years
STANDARD_DEVIATION 10.6
54 Years
STANDARD_DEVIATION 10.6
53.9 Years
STANDARD_DEVIATION 11
54.5 Years
STANDARD_DEVIATION 10.2
Sex: Female, Male
Female
415 Participants100 Participants104 Participants117 Participants94 Participants
Sex: Female, Male
Male
682 Participants176 Participants163 Participants160 Participants183 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
22 / 26774 / 27614 / 27710 / 277
serious
Total, serious adverse events
2 / 2671 / 2762 / 2771 / 277

Outcome results

Primary

Change From Baseline in Trough Seated Diastolic Blood Pressure (DBP)

Change from baseline to the end of study in trough DBP

Time frame: End of study (8 weeks or last value on treatment)

Population: Full analysis set of patients who had a baseline trough blood pressure measurement and at least one post baseline trough blood pressure measurement using last observation carried forward. The full analysis set included patients who had baseline and at least one post baseline trough measure of blood pressure

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Amlodipine 5mgChange From Baseline in Trough Seated Diastolic Blood Pressure (DBP)-5.71 mmHgStandard Error 0.49
Amlodipine 10mgChange From Baseline in Trough Seated Diastolic Blood Pressure (DBP)-7.95 mmHgStandard Error 0.49
Telmisartan 40mg and Amlodipine 5mgChange From Baseline in Trough Seated Diastolic Blood Pressure (DBP)-9.35 mmHgStandard Error 0.48
Telmisartan 80mg and Amlodipine 5mgChange From Baseline in Trough Seated Diastolic Blood Pressure (DBP)-10.63 mmHgStandard Error 0.48
p-value: <0.000195% CI: [-4.9, -2.38]ANCOVA
p-value: <0.000195% CI: [-6.18, -3.66]ANCOVA
95% CI: [-2.66, -0.14]ANCOVA
95% CI: [-3.93, -1.43]ANCOVA
Primary

Number of Patients With Oedema

Patients from the treated set who experienced at least one case of general oedema.

Time frame: During randomised treatment period (8 weeks was the planned end of treatment, some of the measurements analysed as end of study can be at 4 weeks or at any point on randomised treatment)

Population: The treated set (TS) consisted of all patients that took at least one dose of the double-blind treatment (n=1097)

ArmMeasureGroupValue (NUMBER)
Amlodipine 5mgNumber of Patients With OedemaNumber of patients with any oedema23 patients
Amlodipine 5mgNumber of Patients With OedemaNumber of patients with general oedema23 patients
Amlodipine 10mgNumber of Patients With OedemaNumber of patients with general oedema75 patients
Amlodipine 10mgNumber of Patients With OedemaNumber of patients with any oedema76 patients
Telmisartan 40mg and Amlodipine 5mgNumber of Patients With OedemaNumber of patients with any oedema14 patients
Telmisartan 40mg and Amlodipine 5mgNumber of Patients With OedemaNumber of patients with general oedema14 patients
Telmisartan 80mg and Amlodipine 5mgNumber of Patients With OedemaNumber of patients with any oedema10 patients
Telmisartan 80mg and Amlodipine 5mgNumber of Patients With OedemaNumber of patients with general oedema10 patients
Secondary

Change From Baseline in Trough Seated Systolic Blood Pressure (SBP)

Change from baseline to the end of study in trough SBP

Time frame: End of study (8 weeks or last value on treatment)

Population: Full analysis set of patients who had a baseline trough blood pressure measurement and at least one post baseline trough blood pressure measurement using last observation carried forward. The full analysis set included patients who had baseline and at least one post baseline trough measure of blood pressure

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Amlodipine 5mgChange From Baseline in Trough Seated Systolic Blood Pressure (SBP)-6.18 mmHgStandard Error 0.73
Amlodipine 10mgChange From Baseline in Trough Seated Systolic Blood Pressure (SBP)-11.11 mmHgStandard Error 0.72
Telmisartan 40mg and Amlodipine 5mgChange From Baseline in Trough Seated Systolic Blood Pressure (SBP)-13.56 mmHgStandard Error 0.71
Telmisartan 80mg and Amlodipine 5mgChange From Baseline in Trough Seated Systolic Blood Pressure (SBP)-14.99 mmHgStandard Error 0.71
Secondary

Trough Seated Blood Pressure (BP) Normality Classes

The number of patients who reach predefined BP categories: * Optimal - SBP\<120 and DBP\<80 mmHg * Normal - SBP\<130 and DBP\<85 mmHg * High-normal - SBP\<140 DBP\<90 mmHg * Stage 1 hypertension - SBP\<160 and DBP\<100 * Stage 2 hypertension SBP\>=160 and DBP\>=100 mmHg

Time frame: End of study (8 weeks or last value on treatment)

Population: Full analysis set of patients who had a baseline trough blood pressure measurement and at least one post baseline trough blood pressure measurement using last observation carried forward. The full analysis set included patients who had baseline and at least one post baseline trough measure of blood pressure

ArmMeasureGroupValue (NUMBER)
Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesNormal23 patients
Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesOptimal2 patients
Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesHigh-normal42 patients
Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesStage 2 hypertension70 patients
Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesStage 1 hypertension118 patients
Amlodipine 10mgTrough Seated Blood Pressure (BP) Normality ClassesStage 1 hypertension126 patients
Amlodipine 10mgTrough Seated Blood Pressure (BP) Normality ClassesOptimal5 patients
Amlodipine 10mgTrough Seated Blood Pressure (BP) Normality ClassesNormal30 patients
Amlodipine 10mgTrough Seated Blood Pressure (BP) Normality ClassesHigh-normal68 patients
Amlodipine 10mgTrough Seated Blood Pressure (BP) Normality ClassesStage 2 hypertension32 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesStage 2 hypertension26 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesHigh-normal63 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesStage 1 hypertension127 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesOptimal19 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesNormal35 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesStage 1 hypertension110 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesNormal51 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesHigh-normal67 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesOptimal21 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated Blood Pressure (BP) Normality ClassesStage 2 hypertension22 patients
Secondary

Trough Seated DBP Response

The number of patients who reach the target DBP of \<90mmHg or had a reduction in DBP \>= 10mmHg

Time frame: End of study (8 weeks or last value on treatment)

Population: Full analysis set of patients who had a baseline trough blood pressure measurement and at least one post baseline trough blood pressure measurement using last observation carried forward. The full analysis set included patients who had baseline and at least one post baseline trough measure of blood pressure

ArmMeasureGroupValue (NUMBER)
Amlodipine 5mgTrough Seated DBP ResponseYes (Responder)116 patients
Amlodipine 5mgTrough Seated DBP ResponseNo (Non-responder)139 patients
Amlodipine 10mgTrough Seated DBP ResponseNo (Non-responder)98 patients
Amlodipine 10mgTrough Seated DBP ResponseYes (Responder)163 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated DBP ResponseYes (Responder)177 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated DBP ResponseNo (Non-responder)93 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated DBP ResponseYes (Responder)187 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated DBP ResponseNo (Non-responder)84 patients
Secondary

Trough Seated Diastolic Blood Pressure Control

The number of patients who reach the target DBP of \<90mmHg

Time frame: End of study (8 weeks or last value on treatment)

Population: Full analysis set of patients who had a baseline trough blood pressure measurement and at least one post baseline trough blood pressure measurement using last observation carried forward. The full analysis set included patients who had baseline and at least one post baseline trough measure of blood pressure

ArmMeasureGroupValue (NUMBER)
Amlodipine 5mgTrough Seated Diastolic Blood Pressure ControlYes (DBP<90 mmHg)107 patients
Amlodipine 5mgTrough Seated Diastolic Blood Pressure ControlNo (DBP>=90 mmHg)148 patients
Amlodipine 10mgTrough Seated Diastolic Blood Pressure ControlNo (DBP>=90 mmHg)113 patients
Amlodipine 10mgTrough Seated Diastolic Blood Pressure ControlYes (DBP<90 mmHg)148 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated Diastolic Blood Pressure ControlYes (DBP<90 mmHg)153 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated Diastolic Blood Pressure ControlNo (DBP>=90 mmHg)117 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated Diastolic Blood Pressure ControlYes (DBP<90 mmHg)173 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated Diastolic Blood Pressure ControlNo (DBP>=90 mmHg)98 patients
Secondary

Trough Seated SBP Control

The number of patients who reach the target SBP of \<140mmHg

Time frame: End of study (8 weeks or last value on treatment)

Population: Full analysis set of patients who had a baseline trough blood pressure measurement and at least one post baseline trough blood pressure measurement using last observation carried forward. The full analysis set included patients who had baseline and at least one post baseline trough measure of blood pressure

ArmMeasureGroupValue (NUMBER)
Amlodipine 5mgTrough Seated SBP ControlYes (SBP<140 mmHg)100 patients
Amlodipine 5mgTrough Seated SBP ControlNo (SBP>=140 mmHg)155 patients
Amlodipine 10mgTrough Seated SBP ControlNo (SBP>=140 mmHg)119 patients
Amlodipine 10mgTrough Seated SBP ControlYes (SBP<140 mmHg)142 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated SBP ControlYes (SBP<140 mmHg)162 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated SBP ControlNo (SBP>=140 mmHg)108 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated SBP ControlYes (SBP<140 mmHg)178 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated SBP ControlNo (SBP>=140 mmHg)93 patients
Secondary

Trough Seated SBP Response

The number of patients who reach the target SBP of \<140mmHg or had a reduction in SBP \>= 15 mmHg

Time frame: End of study (8 weeks or last value on treatment)

Population: Full analysis set of patients who had a baseline trough blood pressure measurement and at least one post baseline trough blood pressure measurement using last observation carried forward. The full analysis set included patients who had baseline and at least one post baseline trough measure of blood pressure

ArmMeasureGroupValue (NUMBER)
Amlodipine 5mgTrough Seated SBP ResponseYes (Responder)118 patients
Amlodipine 5mgTrough Seated SBP ResponseNo (Non-responder)137 patients
Amlodipine 10mgTrough Seated SBP ResponseNo (Non-responder)95 patients
Amlodipine 10mgTrough Seated SBP ResponseYes (Responder)166 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated SBP ResponseYes (Responder)187 patients
Telmisartan 40mg and Amlodipine 5mgTrough Seated SBP ResponseNo (Non-responder)83 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated SBP ResponseYes (Responder)200 patients
Telmisartan 80mg and Amlodipine 5mgTrough Seated SBP ResponseNo (Non-responder)71 patients

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026