Imaging cholesterol trafficking in the adrenal gland using a new radiotracer

Positron Emission Tomography (PET) Imaging of Cholesterol Trafficking: Clinical Evaluation of [18F]FNP-59 in Normal Human Subjects (Groups 2, 3 & 4)

Early Phase 1 Interventional University of Michigan · NCT04546126

This study is testing a new imaging tool to see if it can help get clearer pictures of the adrenal gland in both healthy people and those with adrenal problems.

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Enrollment24 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Michigan Academic / other
Drugs / interventionsradiation
Locations2 sites (Ann Arbor, Michigan and 1 other locations)
Trial IDNCT04546126 on ClinicalTrials.gov

What this trial studies

This study evaluates the use of a fluorine-18 analogue of NP-59 ([18F]FNP-59) to improve PET imaging of the adrenal gland. Participants include healthy individuals undergoing hormone manipulation and those with known adrenal pathology. The study aims to assess the feasibility and effectiveness of this radiotracer in providing better imaging characteristics, including improved localization and sensitivity. All participants will undergo PET/CT scans after receiving the radiotracer.

Who should consider this trial

Good fit: Ideal candidates include healthy individuals without known adrenal pathology and those with abnormal adrenal cortical hormone secretion.

Not a fit: Patients with known adrenal pathology who are not part of the study group may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance the accuracy of adrenal gland imaging, leading to better diagnosis and management of adrenal disorders.

How similar studies have performed: Other studies using similar imaging techniques have shown promise, but this specific approach with [18F]FNP-59 is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria (Groups 2 \& 3):

* Participants without any known adrenal pathology as normal controls for undergoing endocrine manipulation

Exclusion Criteria (Groups 2 \& 3):

* Pregnancy
* Unable to do imaging
* Body weight greater than 400 lbs (181 Kg)
* Prisoners are not eligible
* Subjects unable to provide own consent are not eligible
* Current use of steroids, Oral contraceptives (OCP), spironolactone, estrogen, androgen, progesterone, Angiotensin-converting enzyme (ACE inhibitors)/ Angiotensin II receptor blockers (ARBs), or supplements that are hormone analogues.
* Known adrenal pathology

Inclusion Criteria (Group 4):

* Abnormal adrenal cortical hormone secretion

Exclusion Criteria (Group 4):

* Pregnant

Where this trial is running

Ann Arbor, Michigan and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions RadiotracerHypertensionCholesterol
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.