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The African-American heart failure trial: a new look at old drugs
1Duke Clinical Research Institute, 2400 Pratt St, Room 0311 Terrace Level, Durham, NC 27705, USA. Michael.felker@duke.edu
Insights
The African-American Heart Failure Trial (AHeFT) found that combining isosorbide dinitrate and hydralazine significantly reduced mortality by 43% in black patients with advanced heart failure.
Area of Science:
- Cardiology
- Pharmacology
- Clinical Trials
Background:
- Heart failure disproportionately affects African-American populations.
- Existing treatments may have limited efficacy in specific demographic groups.
- The combination of isosorbide dinitrate and hydralazine was investigated for potential benefits.
Purpose of the Study:
- To evaluate the efficacy of a fixed-dose combination of isosorbide dinitrate and hydralazine in black patients with advanced heart failure.
- To compare the combination therapy against a placebo in the target population.
- To assess the impact on mortality, hospitalizations, and quality of life.
Main Methods:
- The African-American Heart Failure Trial (AHeFT) was a randomized, placebo-controlled study.
- Participants were black patients with advanced self-identified heart failure.
- The study was terminated early due to observed significant benefits in the treatment arm.
Main Results:
- A 43% reduction in all-cause mortality was observed in the group receiving isosorbide dinitrate and hydralazine.
- Significant improvements were noted in hospitalizations for heart failure.
- Enhanced quality of life was reported in the active treatment group.
Conclusions:
- The combination of isosorbide dinitrate and hydralazine demonstrated a significant mortality benefit in black patients with advanced systolic heart failure.
- The AHeFT study design offers a novel approach to clinical trials, considering drug mechanisms and patient pathophysiology.
- Further research is needed to determine if these benefits extend to a broader heart failure population.
Abstract:
Evaluation of: Combination of isosorbide dinitrate and hydralazine in blacks with heart failure. Taylor AL, Zieche S, Yancy C et al.: N. Engl. J. Med. 351, 2049-2057 (2004). The African-American Heart Failure Trial (AHeFT) evaluated the efficacy of a fixed dose combination of isosorbide dinitrate and hyrdalazine compared with placebo in black patients with advanced self-identified heart failure. The study was stopped early by the Data Safety Monitoring Board, after a highly significant mortality benefit (43% reduction in all-cause mortality) was seen in the active treatment arm. Similar improvements were seen in other end points, including hospitalizations for heart failure and quality of life. These data represent a significant advance in the medical management of African-American patients with advanced systolic heart failure. Additionally, the design of the AHeFT study represents a novel approach to the design of clinical trials in heart failure, based on an understanding of the mechanism of action of drugs and the underlying pathophysiology of the disease state in specific patients groups. Future research will be required to assess whether benefits of this drug combination seen in AHeFT can be extended to the wider population of patients with advanced heart failure.
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