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Reading a registry entry
Public trial registries record the design, population, endpoints, and status of a study before results exist. The prespecified primary endpoint is the single most useful field: it tells you what the trial was actually built to answer.
Changes to endpoints after enrolment, very small sample sizes, single-arm designs, and open-label assessment of subjective outcomes are all signals to weigh results cautiously.
- Randomised, double-blind, placebo-controlled designs limit bias best.
- Composite endpoints can be driven by their least important component.
- Open-label extensions describe tolerability, not comparative efficacy.
Fig. 02 / Molecular pathway02
Trial status is not a verdict
'Recruiting' means a question is being asked. 'Completed' means data collection finished, not that results were positive. 'Terminated' can reflect futility, safety, or business decisions — the reason is worth checking.
Editorial disclaimer
This site is educational and does not provide medical advice, dosing protocols, or treatment recommendations. Regulatory status and evidence strength differ sharply between compounds. A “research use only” label does not indicate that a product is appropriate for human use. Decisions about medicines belong with a qualified clinician.