failed_experiment.db
← Back to browse

Medicine› Physiology› Obstructive Sleep Apnea Research

Heart failure — Adaptive servo-ventilation

Submitted 2026-10-22

Field: Medicine › PhysiologyType: No effect foundArea: heart failureArea: sleep apneaTarget: Adaptive servo-ventilationStage: randomized trial

Hypothesis

Treating predominantly central sleep apnea with adaptive servo-ventilation would improve outcomes in heart failure with reduced ejection fraction.

What failed

In 1,325 patients the primary endpoint did not differ (54.1% vs 50.8%, HR 1.13, P=0.10), and all-cause mortality was significantly higher with servo-ventilation (HR 1.28, P=0.01), as was cardiovascular death (HR 1.34, P=0.006).

Broken assumption

Suppressing central sleep apnea improves outcomes in heart failure with reduced ejection fraction.

Target engaged
Yes

Why

The device did its job on the target — apnea-hypopnea index fell to 6.6 events an hour — but suppressing central apnea did not help these patients and was associated with more deaths.

From the published paper: Cowie MR, Woehrle H, Wegscheider K, et al. (SERVE-HF). N Engl J Med, 2015. NCT00733343 ↗

Research ideas from this failure

Unvetted lead — read the papers

New hypotheses this failure suggests, each with a crucial experiment, a rival explanation of the original result, and the papers it rests on. Written by AI from paper titles and abstracts found on OpenAlex (and Europe PMC, for life and health sciences).

Related failures (3)

Matched on shared genes, mechanisms and ways of failing as well as wording. Each shows why it matched — treat these as leads rather than verdicts.

Links in published research

Where this experiment's genes are known to matter outside its own research area, and the papers behind those links. Sources: Open Targets Platform and Europe PMC.