EU Clinical Trials Register / CTIS

The EU Clinical Trials Register and its successor CTIS hold European clinical trial registrations and results, and together they are Europe's trial registry, complementing ClinicalTrials.gov for studies that run only in the EU. The registry is operated by the European Medicines Agency and is public. On OnCo it is linked to the institution European Medicines Agency and is cited by the bottlenecks Trials enrol too few, too slowly, Failures are hidden and Regulatory divergence between regions. It also supports ideas such as Mutual recognition of ethics review across countries, One clinical trial application accepted by regulators in every major region, Actually fine sponsors who do not post trial results and A plain-language summary of every cancer trial result within a year.