PATHFINDER 2 (Early Detection of Cancer)

What is the Purpose of this Study?

We are doing this study to find out how well an experimental multi-cancer early detection (MCED) test works. We want to know if this test is accurate and if it provides a good benefit for study participants and medical providers.

What is the Condition Being Studied?

Testing to Find Multiple Types of Cancers

Who Can Participate in the Study?

Adults who are 50 years or older.

For more information about who can be in this study, please contact the study team at

Age Group

What is Involved?

If you choose to join this study, you will:

  • Answer questionnaires
  • Have a blood draw

If your test shows a result of "cancer signal detected," the study doctor or your regular doctor might order additional tests for you.

We will pay you for your time on the study.

Study Details

Full Title
The PATHFINDER 2 Study: Evaluating the Safety and Performance of the GRAIL
Multi-Cancer Early Detection Test in an Eligible Screening Population
Principal Investigator
Professor of Medicine
Protocol Number
IRB: PRO00109985
NCT: NCT05155605
Phase N/A
Enrollment Status