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Efficacy and Safety of Aliskiren and Aliskiren/Enalapril Combination on Morbidity-mortality in Patients With Chronic Heart Failure

A Multicenter, Randomized, Double-blind, Parallel Group, Active-controlled Study to Evaluate the Efficacy and Safety of Both Aliskiren Monotherapy and Aliskiren/Enalapril Combination Therapy Compared to Enalapril Monotherapy, on Morbidity and Mortality in Patients With Chronic Heart Failure (NYHA Class II - IV). The Study is Also Known as Aliskiren Trial of Minimizing OutcomeS in Patients With HEart Failure (ATMOSPHERE).

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00853658
Acronym
ATMOSPHERE
Enrollment
7064
Registered
2009-03-02
Start date
2009-03-31
Completion date
2015-10-31
Last updated
2016-11-25

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

Conditions

Chronic Heart Failure

Keywords

Chronic Heart Failure, Cardiovascular death, CHF hospitalization, morbi-mortality trial, outcome study, endpoint driven, plasma renin activity, renin angiotensin aldosterone system, direct renin inhibitors, BNP, KCCQ, eGFR, (NYHA class II to IV) with elevated, BNP and reduced LVEF

Brief summary

The study will evaluate the efficacy and safety of both aliskiren monotherapy and aliskiren/enalapril combination therapy as compared to enalapril monotherapy, on morbidity and mortality in patients with chronic heart failure (NYHA Class II - IV.

Interventions

DRUGEnalapril

Enalapril 10 mg film-coated tablet and administered orally.

DRUGAliskiren

Aliskiren 150 mg titrated to 300 mg film-coated tablet and administered orally.

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

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

Inclusion criteria

Patients eligible for inclusion in this study had to fulfill all of the following criteria: 1. Patients ≥ 18 years of age, male or female. 2. Patients with a diagnosis of chronic heart failure (NYHA Class II - IV): 1. LVEF ≤ 35% at Visit 1 (local measurement, within the past 6 months assessed by echocardiography, multiple uptake gated acquisition scan (MUGA), computerized tomography(CT) scan, magnetic resonance imaging (MRI) or ventricular angiography) 2. Elevated BNP or NT-proBNP at Visit 1: BNP ≥ 150 pg/mL (or BNP ≥ 100 pg/mL and unplanned hospitalization for HF within the last 12 months prior to Visit 1) (according to local measurement). OR NT-proBNP ≥ 600 pg/mL (or NT-proBNP ≥ 400 pg/mL and unplanned hospitalization for HF within the last 12 months prior to Visit 1) (according to local measurement). 3. Patients had to be treated with an ACEI at a stable dose enalapril 10 mg daily at least or any other ACEI, e.g. ramipril, quinapril, lisinopril, fosinopril, perindopril, trandolapril; based on equivalent doses, for at least 4 weeks prior to Visit 1 4. Patients had to be treated with a beta-blocker, unless contraindicated or not tolerated, at a stable dose for at least 4 weeks prior to visit 1 (for patients not on target dose, according to local guidelines, or in absence of that medication, the reason should be documented). 5. Written informed consent to participate in the study and ability to comply with all requirements.

Exclusion criteria

Patients with any of the following were to be excluded from participation in the study: 1. History of hypersensitivity to any of the study drugs including history or allergy to ACEIs as well as known or suspected contraindications to the study drugs or previous history of intolerance to high doses of ACEIs during up- titration process. 2. Patients treated concomitantly with both an ARB and an aldosterone antagonist in addition to study drug at Visit 1. 3. Current acute decompensated HF (defined as an acute exacerbation of a chronic heart failure status manifested by typical signs and symptoms of HF like dyspnea, fatigue etc., that may require IV therapy with diuretics, vasodilators and/or inotropic drugs). 4. Symptomatic hypotension and/or less than 95 mmHg systolic blood pressure (SBP) at Visit 1 and/or less than 90 mmHg SBP at Visit 4. 5. Acute coronary syndrome, stroke, transient ischemic attack, cardiac, carotid or major vascular surgery, percutaneous coronary intervention (PCI) or carotid angioplasty, within the past 3 months prior to Visit 1. 6. Coronary or carotid artery disease likely to require surgical or percutaneous intervention within the 6 months after Visit 1. 7. Right heart failure due to severe pulmonary disease. 8. Patients with Diabetes Mellitus.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) Hospitalizationup to End of Study (78 months)Number of participants that had first occurrence of the composite endpoint, which is defined as either CV death or HF hospitalization due to HF.

Secondary

MeasureTime frameDescription
Change From Baseline to Month 12 for the Kansas City Cardiomyopathy Questionnaire (KCCQ) Clinical Summary ScoreBaseline, Month 12Change from baseline to Month 12 for the Kansas City Cardiomyopathy Questionnaire (KCCQ) clinical summary score. KCCQ is a 23-item, self-administered instrument that quantifies physical function, symptoms (frequency, severity and recent change), social function, self-efficacy and knowledge, and quality of life. KCCQ clinical summary score is a composite assessment of physical limitations and total symptom scores. Scores are transformed to a range of 0-100, in which higher scores reflect better health status.
All Cause Deathup to end of study (78 months)Number of patients - All-cause death. All-cause death is common in Heart Failure HF patients this measures how many patients had this event.

Countries

Argentina, Australia, Austria, Belgium, Brazil, Canada, China, Colombia, Costa Rica, Czechia, Denmark, Dominican Republic, Estonia, Finland, France, Germany, Greece, India, Ireland, Italy, Japan, Latvia, Lithuania, Mexico, Netherlands, Norway, Peru, Poland, Portugal, Puerto Rico, Romania, Russia, Slovakia, South Africa, South Korea, Spain, Sweden, Switzerland, Taiwan, Thailand, Turkey (Türkiye), United Kingdom, United States, Venezuela

Participant flow

Pre-assignment details

During Active Run-in period, patients received enalapril for step 1 & 2 and then aliskiren on top of the max tolerated dose of enalapril for step 3. Patients who completed the run in were randomized in a 1:1:1 ratio to one of the 3 treatment arms (aliskiren/enalapril combination therapy, aliskiren monotherapy, or enalapril monotherapy).

Participants by arm

ArmCount
Combination Aliskiren / Enalapril
Aliskiren / Enalapril combination therapy-150 mg/10 mg titrated to 300 mg/ 10 mg film-coated tablets and administered orally.
2,340
Aliskiren
Aliskiren monotherapy - 150 mg titrated to 300 mg film-coated tablets and administered orally.
2,340
Enalapril
Enalapril monotherapy -10 mg film-coated tablet and administered orally.
2,336
Total7,016

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyDeath713768753
Overall StudyH.A. Request262319
Overall StudyIRB request002
Overall StudyLost to Follow-up11611
Overall StudyMissing study completion information546
Overall StudyPatient's request211711
Overall StudyVital Status at study end N/A81010
Overall StudyVital Status known (alive) at study end233
Overall StudyVital Status unknown at study end110

Baseline characteristics

CharacteristicCombination Aliskiren / EnalaprilAliskirenEnalaprilTotal
Age, Continuous63.2 years
STANDARD_DEVIATION 11.65
63.3 years
STANDARD_DEVIATION 12.06
63.3 years
STANDARD_DEVIATION 11.71
63.2 years
STANDARD_DEVIATION 11.81
Sex: Female, Male
Female
494 Participants532 Participants499 Participants1525 Participants
Sex: Female, Male
Male
1846 Participants1808 Participants1837 Participants5491 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
1,698 / 2,3471,605 / 2,3481,623 / 2,345
serious
Total, serious adverse events
1,466 / 2,3471,504 / 2,3481,501 / 2,345

Outcome results

Primary

Number of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) Hospitalization

Number of participants that had first occurrence of the composite endpoint, which is defined as either CV death or HF hospitalization due to HF.

Time frame: up to End of Study (78 months)

Population: Full Analysis Set (FAS) - All randomized patients with exception of mis-randomized patients that took no study drug and patients from the sites with major GCP violations.

ArmMeasureGroupValue (NUMBER)
Combination Aliskiren / EnalaprilNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) HospitalizationCV death512 participants
Combination Aliskiren / EnalaprilNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) HospitalizationPrimary Composite770 participants
Combination Aliskiren / EnalaprilNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) Hospitalization1st HF Hospitalization430 participants
AliskirenNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) HospitalizationCV death562 participants
AliskirenNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) HospitalizationPrimary Composite791 participants
AliskirenNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) Hospitalization1st HF Hospitalization442 participants
EnalaprilNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) HospitalizationPrimary Composite808 participants
EnalaprilNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) Hospitalization1st HF Hospitalization452 participants
EnalaprilNumber of Participants That Had First Occurrence of the Composite Endpoint, Which is Defined as Either Cardiovascular (CV) Death or Heart Failure (HF) HospitalizationCV death547 participants
Comparison: (superiority)p-value: 0.172495% CI: [0.85, 1.03]Regression, Cox
Comparison: (superiority) Non-Diabetic patientsp-value: 0.457995% CI: [0.85, 1.07]Regression, Cox
p-value: 0.036895% CI: [0.9, 1.1]Regression, Cox
Comparison: (superiority)p-value: 0.911895% CI: [0.9, 1.1]Regression, Cox
Secondary

All Cause Death

Number of patients - All-cause death. All-cause death is common in Heart Failure HF patients this measures how many patients had this event.

Time frame: up to end of study (78 months)

Population: Full Analysis Set (FAS) - All randomized patients with exception of mis-randomized patients that took no study drug and patients from the sites with major GCP violations

ArmMeasureValue (NUMBER)
Combination Aliskiren / EnalaprilAll Cause Death595 participants
AliskirenAll Cause Death654 participants
EnalaprilAll Cause Death646 participants
Secondary

Change From Baseline to Month 12 for the Kansas City Cardiomyopathy Questionnaire (KCCQ) Clinical Summary Score

Change from baseline to Month 12 for the Kansas City Cardiomyopathy Questionnaire (KCCQ) clinical summary score. KCCQ is a 23-item, self-administered instrument that quantifies physical function, symptoms (frequency, severity and recent change), social function, self-efficacy and knowledge, and quality of life. KCCQ clinical summary score is a composite assessment of physical limitations and total symptom scores. Scores are transformed to a range of 0-100, in which higher scores reflect better health status.

Time frame: Baseline, Month 12

Population: Full Analysis Set (FAS) - All randomized patients with exception of mis-randomized patients that took no study drug and patients from the sites with major GCP violations.

ArmMeasureValue (LEAST_SQUARES_MEAN)Dispersion
Combination Aliskiren / EnalaprilChange From Baseline to Month 12 for the Kansas City Cardiomyopathy Questionnaire (KCCQ) Clinical Summary Score-5.04 KCCQ ScoreStandard Error 0.56
AliskirenChange From Baseline to Month 12 for the Kansas City Cardiomyopathy Questionnaire (KCCQ) Clinical Summary Score-6.03 KCCQ ScoreStandard Error 0.57
EnalaprilChange From Baseline to Month 12 for the Kansas City Cardiomyopathy Questionnaire (KCCQ) Clinical Summary Score-5.01 KCCQ ScoreStandard Error 0.55

Source: ClinicalTrials.gov · Data processed: Mar 8, 2026