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Unknown Primary Cancer clinical trials recruiting in the U.S.
5 studies for Unknown Primary Cancer are recruiting participants at sites across the United States.
Recently updated studies
Integrated Cancer Repository for Cancer Research
RecruitingObservational studyHealthy volunteers welcome
Ages 19 to 110 · All sexes · Updated Jun 29, 2026 · NCT02012699TCF-001 TRACK (Target Rare Cancer Knowledge) Study
Recruiting
Ages 18 and older · All sexes · Updated May 26, 2026 · NCT04504604Blood Tests and Questionnaires in Studying Adherence to Preventative Swallowing Exercises in Participants With Metastatic Head and Neck Cancer
RecruitingObservational study
Ages 18 and older · All sexes · Updated Apr 15, 2026 · NCT03010150A Phase 2a, Single-dose, Open-label Study to Evaluate Diagnostic Performance and Safety of Pegsitacianine, an Intraoperative Fluorescence Imaging Agent for the Detection of Cancer, in Patients With Unknown Primary Head and Neck Cancer (ILLUMINATE STUDY)
RecruitingPhase 2
Ages 18 to 99 · All sexes · Updated Apr 14, 2026 · NCT05576974Cancer Genetic Testing in Ethnic Populations
Recruiting
Ages 18 and older · All sexes · Updated Apr 2, 2026 · NCT04475640From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.