Every study on the ClinicalTrials.gov registry that lists a site in Portugal and is open, about to open, active-but-closed, or enrolling by invitation. Filter it, cite it, and take it away as a file.
This register is built from ClinicalTrials.gov, the trial registry run by the U.S. National Library of Medicine. It includes every study on the registry that lists at least one investigative site in Portugal and is recruiting, not yet recruiting, active but no longer recruiting, or enrolling by invitation: 1,100 studies in total at the last sync on 03 Oct 2026, 03:16 UTC. The full list can be downloaded as CSV or queried as JSON through the register API.
This page shows the 28 of those studies with a site in Lisbon that also match the filters currently applied.
15 of the 28 studies on this page are recruiting new participants as of the 03 Oct 2026, 03:16 UTC sync. A further 0 have not yet opened recruitment, 13 are active but closed to new participants, and 0 are enrolling by invitation only. Eligibility for any study is decided by its study team.
| Phase | Studies | Recruiting | Share |
|---|---|---|---|
| Phase 3 | 24 | 12 | 85.7% |
| Phase 2 | 3 | 2 | 10.7% |
| Phase 2/3 | 1 | 1 | 3.6% |
| Lead sponsor | Studies | Recruiting |
|---|---|---|
| Merck Sharp & Dohme LLC | 28 | 15 |
