What Do the Different Statuses Mean on a Parkinson's Clinical Trial Listing?

If you've ever searched for Parkinson's clinical trials on ClinicalTrials.gov, you've probably noticed that every listing comes with a status. Recruiting. Completed. Terminated.

Recruiting

This means the trial is actively looking for participants and you may be able to apply. For families, Recruiting is your green light to take the next step.

Not Yet Recruiting

The trial has been approved and registered but hasn't started enrolling participants yet. These are worth bookmarking.

Active, Not Recruiting

The study is still running and current participants are still being followed, but enrollment is closed.

Completed

The trial has finished. All participants have been through the study and data collection is done.

Terminated

The trial ended before it was supposed to. This can happen for a few different reasons including safety concerns or funding issues.

Withdrawn

Similar to Terminated, but the trial was stopped before a single participant was enrolled.

Enrolling by Invitation

The trial is recruiting, but only specific patients are being invited to participate. Ask your neurologist if you see this status.

A Simple Way to Remember It

• Recruiting — Open, apply now
• Not Yet Recruiting — Coming soon, worth bookmarking
• Active, Not Recruiting — Still running, but closed
• Completed — Finished
• Terminated — Ended early
• Withdrawn — Never started
• Enrolling by Invitation — Ask your neurologist