Ensure Accurate Data and Reliable Drug Safety Profiles
Even a small number of duplicate or professional research subjects can have an outsized impact on the outcome of a clinical trial. The difference between meeting or missing a primary endpoint can depend on just a few subjects. When those subjects appear in multiple sites — or even across studies with different sponsors — results can become skewed, safety data distorted, and promising investigational products put at risk.
Verified Clinical Trials (VCT) prevents these critical errors by detecting duplicate subjects, professional patients, and protocol violations at the time of screening and maintaining protection throughout the entire duration of the trial.
When participants are simultaneously enrolled in multiple studies — especially those involving similar mechanisms of action — several major risks emerge:
Skewed efficacy data: Subjects who receive active drug in one trial and placebo in another may make the placebo group appear more effective than it truly is.
Distorted safety signals: Subjects exposed to multiple investigational products can develop adverse events unrelated to the study drug, complicating pharmacovigilance analysis.
Data inconsistency across sites: A single subject enrolled at multiple locations can create duplicate data points that inflate or deflate study results.
Based on VCT’s extensive global database and years of operational experience, upwards of 10% or more of research subjects in many studies may represent duplicate participation, professional patients, or other protocol violations. These hidden issues can lead to trial failure, loss of statistical power, and serious regulatory or reputational consequences.
Sponsors and CROs invest enormous time and money designing scientifically rigorous studies — but data integrity ultimately depends on subject integrity. VCT provides the only proven, cross-sponsor solution to protect both.
Implementing VCT is simple, cost-effective, and provides an immediate return on investment. By detecting and preventing these risks before enrollment, VCT helps ensure:
Accurate drug-safety profiles and true adverse-event attribution.
Reliable efficacy and placebo separation.
Consistent, verifiable data across sites and sponsors.
Reduced regulatory risk and faster database lock.
Don’t leave the integrity of your trial to chance. VCT’s cross-sponsor registry safeguards data accuracy, patient safety, and trial success — from the very first subject screened to the final database lock.