Fever of Unknown Origin clinical trials
The registry lists 21 studies for Fever of Unknown Origin across more than 10 countries. 2 are recruiting or about to start. 12 of them are mainly about Fever of Unknown Origin (how this is decided). Per ClinicalTrials.gov, last updated 2026-10-05.
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Example · made-up studies
Breast cancer · Recruiting: 2 came in, 3 changed
What changed in your saved searches, Oct 31 – Nov 6:
A study of drug A after surgery for early breast cancer
Came in · now Recruiting
Drug B with hormone therapy in advanced breast cancer
Changed
· Sites: 4 added, including Seoul and Busan
· Enrollment: 300 → 450 participants
Exercise during chemotherapy
Now Active, not recruiting
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Who runs them
Beijing Friendship Hospital (2) · Changi General Hospital (1) · University Hospital, Montpellier (1) · Tongji Hospital (1) · University Hospital, Limoges (1) · University of Adelaide (1) · Assiut University (1) · National Institute of Cardiology, Warsaw, Poland (1)
Coming up
Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.
The study
- Jun 2027Comparison of FDG-PET/CT and CECT-CAP as Upfront Imaging Modality for the Diagnosis of Pyrexia of Unknown Origin · Post Graduate Institute of Medical Education and Research, Chandigarh
Who these studies take
Of the 2 Fever of Unknown Origin studies recruiting now, 2 (100%) set no upper age limit and 0 (0%) stop at 75 or younger. 0 (0%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 0 (0%) take healthy volunteers.
| Age | Women | Men |
|---|---|---|
| 10 | 0 (0%) | 0 (0%) |
| 18 | 2 (100%) | 2 (100%) |
| 30 | 2 (100%) | 2 (100%) |
| 40 | 2 (100%) | 2 (100%) |
| 50 | 2 (100%) | 2 (100%) |
| 65 | 2 (100%) | 2 (100%) |
| 75 | 2 (100%) | 2 (100%) |
| 85 | 2 (100%) | 2 (100%) |
Across all 21 studies, recruiting or not: 10% stop at 75 or younger and 10% at 65; 29% take children; 0% are for women only and 0% for men only; 5% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.
Studies
Recruiting first, then most recently updated. Showing 21 of 21. search them.
- Comparison of FDG-PET/CT and CECT-CAP as Upfront Imaging Modality for the Diagnosis of Pyrexia of Unknown OriginRecruitingNCT07816783Not applicable1 country
- The Investigators Will Evaluate the Diagnostic Performance of [18F]-AlF-FAPI-74 PET/CT in Inflammatory Disorders and Compare it With the Current Gold Standard for Inflammation, FDG PET/CT, in Three Patient Cohort: Patients Presenting With Fever of Unknown Origin, IgG4-RD and AxSpA.RecruitingNCT07535554Phase 2/31 country
- Fever of Unknown Origin (FUO) in Elderly PatientsWithdrawnNCT048103511 country
- Utility of 18F-FDG PET/CT for Suspected Infection in the Inpatient Setting: a Single Centre Retrospective Cohort StudyCompletedNCT074304751 country
- Impact of the PET in the Diagnosis Strategy of FUO or Inflammatory Syndrome in Immunocompetent Patients FUO-TEPCompletedNCT01200771Not applicable1 country
- Primary Care-Hospital Embedding: a Prospective, Multicentric, Observational StudyActive, not recruitingNCT057231851 country
- 68Ga Citrate PET/MRI for Evaluation of Fever of Unknown Origin (FUO)WithdrawnNCT04139395Phase 31 country
- PEMF Therapy to Treat Lingering Symptoms of Lyme Disease After Treatment With AntibioticsTerminatedNCT04577053Not applicable1 country
- Fever of Unknown Orgin Registry in Internal Medicine Unit and Infectious Disease UnitsStatus unknownNCT052545221 country
- PLACE OF THE 18F-FDG-PET/CT IN THE DIAGNOSTIC WORKUP IN PATIENTS WITH CLASSICAL FEVER OF UNKNOWN ORIGIN (FUO)CompletedNCT048513791 country
- PET-MRI in Diagnosing Patients With Cancer, Cardiac Diseases, or Neurologic DiseasesCompletedNCT02084147Not applicable1 country
- Causes of FUO in Infants and ChildrenStatus unknownNCT04073108
- Evaluation of Diagnosis of Fever and Biologic Inflammatory Syndrome of Unknown OriginCompletedNCT027866931 country
- A Two-step Method Apparently Improved the Physicians' Level of Diagnosis Decision-making for Adult Patients With FUOStatus unknownNCT020356701 country
- Clinical Research for the Diagnosis of Tick-borne Diseases in Patients With Unexplained Acute FeverStatus unknownNCT026186551 country
- Influence of Compound Qingre Granule on the Inflammatory Markers in Patient of FUO With Excess-heat SyndromeStatus unknownNCT02695914
- Rapid Viral Diagnostics in Adults to Reduce Antimicrobial Consumption and Duration of HospitalizationCompletedNCT02538770Not applicable1 country
- Granulocyte Transfusions in Hematological Patients With Febrile NeutropeniaCompletedNCT025442301 country
- PET CT in Suspected CIED Infection, a Pilot Study - PET Guidance IStatus unknownNCT021967531 country
- Immediate vs. Deferred Empirical Antifungal Treatment With Voriconazole In Neutropenic PatientsCompletedNCT00150345Phase 31 country
- Procalcitonin in Fever of Unknown EtiologyTerminatedNCT00398775Not applicable1 country