How Clinical Trials Really End
Most drugs that enter clinical trials never make it to market. This site visualizes completion, termination, and withdrawal rates across trial phases, intervention types, and therapeutic areas — using data from ClinicalTrials.gov.
Key metrics from clinical trials with terminal outcomes (completed, terminated, or withdrawn).
How trial outcomes differ across Phase 1 through Phase 4. Phase 2 is the graveyard.
Behavioral interventions lead the pack; biologics face the toughest road.
Completion rates across 15 therapeutic areas and 4 trial phases. Darker = lower survival.
Completion rates over time (2004–2024). A slow but steady upward trend across all phases.