Clinical Trials Research
Live data from ClinicalTrials.gov showing ongoing medical research studies worldwide. Search by condition, treatment, or drug name to find active trials, enrollment status, and study details.
Clinical Research Database
Recruiting Studies: Find trials actively enrolling participants
Study Phases: Phase 1 through 4 trials and observational studies
Interventions: Drug, device, behavioral, and biological trials
Global Coverage: Studies from academic centers and industry sponsors worldwide
Understanding Clinical Trial Phases
Phase 1: Safety testing in small groups (20-100 participants)
Phase 2: Efficacy and side effects evaluation (100-300 participants)
Phase 3: Large-scale effectiveness comparison (300-3,000 participants)
Phase 4: Post-market surveillance after FDA approval
Trial Status Definitions
Recruiting
Currently enrolling participants for the study
Active, Not Recruiting
Study ongoing but no longer accepting new participants
Completed
Study has ended normally with data collection complete
Enrolling by Invitation
Participants selected from a predetermined population
Study Types
Interventional
Participants receive specific interventions according to protocol
Observational
Participants observed without assigned interventions
Expanded Access
Provides investigational drugs outside of clinical trials
Registry
Collects data about a condition or population over time
Data Source Information
ClinicalTrials.gov
- • NIH/NLM database
- • 400,000+ studies
- • 220+ countries
- • Updated daily
Registration Requirements
- • FDA-regulated trials
- • NIH-funded studies
- • ICMJE publication requirement
- • WHO primary registry
Data Quality
- • Protocol registration required
- • Results reporting mandated
- • Quality control reviews
- • Compliance monitoring