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Unknown Primary Cancer clinical trials and research
As of November 12, 2026, Find a Trial lists 2 Unknown Primary Cancer clinical trials that are recruiting, at sites in 2 countries (most in United States (1), Canada (1)). By phase: Phase 2 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 2Clinical trials
- 2Countries
All recruiting trials (2)
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Evaluating a new imaging agent for detecting head and neck cancer
This study is testing a new imaging agent to see if it can help doctors find head and neck cancers more easily during surgery, especially in patients with known or unknown cancer.
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Collecting tumor samples to improve cancer treatment matching
This study is collecting tumor samples from patients with advanced cancer to see if analyzing their genes can help doctors find the best treatments for them.
Related topics
Quick answers
How many Unknown Primary Cancer clinical trials are recruiting right now?
2, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 2 countries. The most sites are in United States (1 trial), Canada (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 2: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.