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NCT04710550
Exploring the Utility of [18F]3F4AP for Demyelination Imaging in Controls, Neurodegeneration and Traumatic Brian Injury
Phase 1 trial testing F18-3F4AP in Brain Injuries, Traumatic in 8 participants. Status unknown.
1 December 2025
Quick facts
| Lead sponsor | Massachusetts General Hospital |
|---|---|
| Phase | Phase 1 |
| Status | Status unknown |
| Study type | INTERVENTIONAL |
| Allocation | non randomized |
| Design | single group |
| Masking | none |
| Primary purpose | diagnostic |
| Enrollment | 8 |
| Start date | 25 January 2021 |
| Primary completion | 1 December 2025 |
| Estimated completion | 1 December 2025 |
| Sites | 1 location across United States |
Drugs / interventions tested
- F18-3F4AP — full drug profile →
Conditions studied
- Brain Injuries, Traumatic — all drugs for Brain Injuries, Traumatic →
- Demyelinating Disorder — all drugs for Demyelinating Disorder →
- Alzheimer Disease — all drugs for Alzheimer Disease →
Sponsor
Massachusetts General Hospital
Who can join
Adults 18 to 90, any sex, with Brain Injuries, Traumatic or Demyelinating Disorder. Patients with the condition only — healthy volunteers not accepted.
Sponsor's own description
The overall objective is to obtain an initial assessment of the value of using \[18F\]3F4AP for imaging demyelinating diseases such as traumatic brain injury (TBI), neurodegenerative diseases such as mild cognitive impairment (MCI) and Alzheimer's Disease (AD): * Aim 1) Assess the safety of \[18F\]3F4AP in healthy volunteers and subjects with traumatic brain injury (TBI) and neurocognitive impaired subjects (AD/MCI). Hypothesis 1: Administration of \[18F\]3F4AP will result in no changes in vitals or other adverse events. * Aim 2) Assess the radiation doses to the main organs in healthy volunteers. Hypothesis 2: the radiation doses to each organ will be comparable in all subjects and within the acceptable limits. * Aim 3) Assess the pharmacokinetics of a bolus infusion of \[18F\]3F4AP in humans including healthy volunteers and patients. Hypothesis 3: the pharmacokinetics of \[18F\]3F4AP at the whole brain level will be similar in controls, TBI and AD/MCI subjects. The kinetics in demyelinated lesions will be slower than in healthy areas. * Aim 4) Correlate MR images with \[18F\]3F4AP PET images. Hypothesis 4A: all the lesions seen on the MRI will show increased signal (VT or SUV) on the PET images. Hypothesis 4B: some of the lesions on the MRI will show increased signal (VT or SUV) on the PET but not all. * Aim 5) Correlate \[18F\]3F4AP PET signal with neuropsychological testing in people with TBI and AD/MCI. Hypothesis 5A: increased PET signal (VT or SUV) will correlate with impaired Mini Mental State Examination (MMSE).
Publications & conference data
7 peer-reviewed publications reference this trial (live from Europe PMC):
-
Current Clinical Trials in Traumatic Brain Injury.
Ahmed Z. · · 2022 · cited 23× · PMID 35624914 · DOI 10.3390/brainsci12050527 -
Human biodistribution and radiation dosimetry of the demyelination tracer [<sup>18</sup>F]3F4AP.
Brugarolas P, Wilks MQ, Noel J, Kaiser JA, et al · · 2023 · cited 17× · PMID 36197499 · DOI 10.1007/s00259-022-05980-w -
Common anesthetic used in preclinical PET imaging inhibits metabolism of the PET tracer [<sup>18</sup>F]3F4AP.
Ramos-Torres K, Sun Y, Takahashi K, Zhou YP, et al · · 2024 · cited 5× · PMID 38690718 · DOI 10.1111/jnc.16118 -
Proceedings of the World Molecular Imaging Congress 2021, October 5-8, 2021: Late-Breaking Abstracts.
· 2021 · cited 2× · PMID 34982366 · DOI 10.1007/s11307-021-01694-x -
Radiosynthesis automation, non-human primate biodistribution and dosimetry of K<sup>+</sup> channel tracer [<sup>11</sup>C]3MeO4AP.
Zhou YP, Wilks MQ, Dhaynaut M, Guehl NJ, et al · · 2024 · cited 1× · PMID 38683467 · DOI 10.1186/s13550-024-01092-8 -
Translational molecular imaging and drug development in multiple sclerosis.
Tay D, Ahmed H, Dawoud A, Salam M, et al · · 2026 · PMID 41356192 · DOI 10.7150/thno.119559 -
Human biodistribution and radiation dosimetry of the demyelination tracer [<sup>18</sup>F]3F4AP
Brugarolas P, Wilks MQ, Noel J, Kaiser J, et al · · 2022 · DOI 10.1101/2022.05.21.22275275
Verify or expand the search:
- PubMed search for NCT04710550
- Europe PMC full search
- ASCO Meeting Library
- ESMO Meeting Library
- bioRxiv preprints
- medRxiv preprints
- Google Scholar
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Verify against primary sources
- ClinicalTrials.gov — authoritative US registry record
- WHO ICTRP — international registry index
- EU Clinical Trials Register
- Sponsor press releases (Google)
- Trial protocol + status: ClinicalTrials.gov NCT04710550 (US National Library of Medicine, public domain)
- Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
- Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
- Sponsor: as reported to ClinicalTrials.gov by Massachusetts General Hospital
- Last refreshed: 30 January 2024
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT04710550.
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