# Endogenous Opioid Systems and Symptom Change in Fibromyalgia

> **NCT02866461** · — · WITHDRAWN · sponsor: **University of Utah**

## Conditions studied

- Fibromyalgia

## Interventions

- **OTHER:** No treatment

## Key facts

- **NCT ID:** NCT02866461
- **Lead sponsor:** University of Utah
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** WITHDRAWN
- **Start date:** 2021-11
- **Primary completion:** 2023-08
- **Final completion:** 2023-08
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** It was not possible to conduct this study at the University of Utah due to the inability of the PET research facility to synthesize the radiotracer central to this project. Project was transferred to another institution.
- **Last updated:** 2023-04-18


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02866461

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02866461, "Endogenous Opioid Systems and Symptom Change in Fibromyalgia". Retrieved via AI Analytics 2026-06-08 from https://api.ai-analytics.org/clinical/NCT02866461. Licensed CC0.

---

*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*