Abstract | OBJECTIVES: BACKGROUND: METHODS: In 2 identical double-blind trials, we randomly assigned 1,613 patients with New York Heart Association functional class IIIb to IV heart failure and an ejection fraction <35% to receive placebo or bosentan (target dose 125 mg twice daily) for a median of 1.5 years. The primary outcome for each trial was clinical status at 9 months (assessed by the hierarchical clinical composite); the primary outcome across the 2 trials was death from any cause or hospitalization for heart failure. RESULTS:
Bosentan did not influence clinical status at 9 months in either trial (p = 0.928 and p = 0.263). In addition, 321 patients in the placebo group and 312 patients in the bosentan group died or were hospitalized for heart failure (hazard ratio [HR]: 1.01; 95% confidence interval [CI]: 0.86 to 1.18; p = 0.90). The bosentan group experienced fluid retention within the first 2 to 4 weeks, as evidenced by increased peripheral edema, weight gain, decreases in hemoglobin, and an increased risk of hospitalization for heart failure, despite intensification of background diuretics. During follow-up, 173 patients died in the placebo group and 160 patients died in the bosentan group (HR: 0.94; 95% CI: 0.75 to 1.16). About 10% of the bosentan group showed meaningful increases in hepatic transaminases, but none had acute or chronic liver failure. CONCLUSIONS:
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Authors | Milton Packer, John J V McMurray, Henry Krum, Wolfgang Kiowski, Barry M Massie, Avi Caspi, Craig M Pratt, Mark C Petrie, David DeMets, Isaac Kobrin, Sebastien Roux, Karl Swedberg, ENABLE Investigators and Committees |
Journal | JACC. Heart failure
(JACC Heart Fail)
Vol. 5
Issue 5
Pg. 317-326
(05 2017)
ISSN: 2213-1787 [Electronic] United States |
PMID | 28449795
(Publication Type: Journal Article, Review)
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Copyright | Copyright © 2017 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved. |
Chemical References |
- Endothelin Receptor Antagonists
- Sulfonamides
- Bosentan
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Topics |
- Aged
- Australia
- Bosentan
- Cause of Death
- Chronic Disease
- Dose-Response Relationship, Drug
- Double-Blind Method
- Drug Administration Schedule
- Endothelin Receptor Antagonists
(administration & dosage, adverse effects)
- Europe
- Female
- Heart Failure
(diagnosis, drug therapy, mortality)
- Humans
- Internationality
- Kaplan-Meier Estimate
- Male
- Middle Aged
- Morbidity
- North America
- Prognosis
- Proportional Hazards Models
- Randomized Controlled Trials as Topic
- Risk Assessment
- Severity of Illness Index
- Sulfonamides
(administration & dosage, adverse effects)
- Survival Analysis
- Time Factors
- Treatment Outcome
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