Abstract | BACKGROUND: METHODS AND RESULTS: We randomly assigned 5770 patients with New York Heart Association class II to IV heart failure to double-blind treatment with either the ACE inhibitor enalapril (10 mg BID, n=2884) or to the ACE-NEP inhibitor omapatrilat (40 mg once daily, n=2886) for a mean of 14.5 months. The primary end point-the combined risk of death or hospitalization for heart failure requiring intravenous treatment--was used prospectively to test both a superiority and noninferiority hypothesis (based on the effect of enalapril in the Studies of Left Ventricular Dysfunction [SOLVD] Treatment Trial). A primary end point was achieved in 973 patients in the enalapril group and in 914 patients in the omapatrilat group (hazard ratio 0.94; 95% CI: 0.86 to 1.03, P=0.187)--a result that fulfilled prespecified criteria for noninferiority but not for superiority. The omapatrilat group also had a 9% lower risk of cardiovascular death or hospitalization (P=0.024) and a 6% lower risk of death (P=0.339). Post hoc analysis of the primary end point with the definition used in the SOLVD Treatment Trial (which included all hospitalizations for heart failure) showed an 11% lower risk in patients treated with omapatrilat (nominal P=0.012). CONCLUSION:
Omapatrilat reduces the risk of death and hospitalization in chronic heart failure but was not more effective than ACE inhibition alone in reducing the risk of a primary clinical event. Between-group differences in favor of omapatrilat observed in secondary and post hoc analyses warrant further study.
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Authors | Milton Packer, Robert M Califf, Marvin A Konstam, Henry Krum, John J McMurray, Jean-Lucien Rouleau, Karl Swedberg |
Journal | Circulation
(Circulation)
Vol. 106
Issue 8
Pg. 920-6
(Aug 20 2002)
ISSN: 1524-4539 [Electronic] United States |
PMID | 12186794
(Publication Type: Clinical Trial, Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
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Chemical References |
- Angiotensin-Converting Enzyme Inhibitors
- Protease Inhibitors
- Pyridines
- Thiazepines
- omapatrilat
- Enalapril
- Neprilysin
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Topics |
- Angiotensin-Converting Enzyme Inhibitors
(adverse effects, therapeutic use)
- Chronic Disease
- Disease-Free Survival
- Double-Blind Method
- Enalapril
(adverse effects, therapeutic use)
- Endpoint Determination
- Female
- Heart Failure
(drug therapy, mortality)
- Humans
- Male
- Middle Aged
- Neprilysin
(antagonists & inhibitors)
- Protease Inhibitors
(adverse effects, therapeutic use)
- Pyridines
(adverse effects, therapeutic use)
- Thiazepines
(adverse effects, therapeutic use)
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