NCT04699747RecruitingPhase 1
Investigating the Utility of Demyelination Tracer [18F]3F4AP in Controls and Multiple Sclerosis Subjects
Source: ClinicalTrials.gov · Last updated 7 Oct 2026
Brief summary (registry, in English)
Our overall objective is to obtain an initial assessment of the potential value of using \[18F\]3F4AP for imaging demyelinating diseases such as multiple sclerosis: * Aim 1) Assess the safety of \[18F\]3F4AP in healthy volunteers and subjects with multiple sclerosis (MS). Hypothesis 1: Administration of \[18F\]3F4AP will result in no changes in vitals or other adverse events. * Aim 2) Assess the pharmacokinetics of a bolus infusion of \[18F\]3F4AP in humans including healthy volunteers and MS patients. Hypothesis 2: the pharmacokinetics of \[18F\]3F4AP at the whole brain level will be similar in controls and MS subjects. The kinetics in demyelinated lesions will be slower than in healthy control areas. * Aim 3) Assess the reproducibility of \[18F\]3F4AP in humans. Hypothesis 3: the test/retest variability of \[18F\]3F4AP within the same subject will be lower than 10%. * Aim 4) Correlate MR brain images with \[18F\]3F4AP PET brain 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 MS. Hypothesis 5: increased PET signal (VT or SUV) will correlate with impaired Single Digit Modality Test (SDMT) scores. * Aim 6) Correlate \[18F\]3F4AP PET signal with EDSS score in people with MS. Hypothesis 6: increased PET signal (VT or SUV) will correlate with higher EDSS scores.
- Status (registry)
- Recruiting
- Phase (registry)
- Phase 1
- Study type
- Interventional
- Enrollment
- 60 (estimated)
- First submitted
- 16 Dec 2020
- Start date
- 25 Mar 2021
- Primary completion date
- 30 Sept 2028
- Lead sponsor
- Massachusetts General Hospital
- Diseases
- Multiple sclerosis
- NCT number
- NCT04699747
What you commit to
- Study type: Interventional · Phase 1
- Planned participants: 60
- From 25 Mar 2021 to the primary completion date, 30 Sept 2028
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Radiation exposure exceeds current Radiology Department guidelines (i.e., 50 mSv in the prior 12 months);
Other illness
- Subjects with known structural brain disease (e.g. brain tumor or stroke);
- Any contraindication to MRI and/or PET, including:
- Subjects with life vest;
- Subjects with implanted heart device (e.g. ICD, Pacemaker);
- Subjects with metallic fragment or foreign body;
- Subjects with other form of devices or prosthesis that are not MRI compatible, such as insulin pump, joint replacement, hearing aid, cochlear implant, permanent contraceptive devices, etc.;
- Subjects with severe claustrophobia
- Relative or absolute contraindication to Dotarem contrast:
- history of renal disease including acute or chronic severe renal insufficiency (glomerular filtration rate \<60 mL/min/1.73m2);
- history of diabetes mellitus, systemic lupus, multiple myeloma, nephrogenic systemic fibrosis, and other co-morbidities;
- History of hypersensitive reactions to Dotarem and/or gadolinium contrast agent;
- Any clinically significant acute or unstable physical or psychiatric condition, judged by the investigators based on medical history or screening physical examination, to be incompatible with the study;
- Any physical or psychiatric condition judged by the investigators to be incompatible with the study, based on medical history or screening physical examination;
Lab values
- Female subjects only: Positive serum pregnancy test, or lactating, or possibility of pregnancy cannot be ruled out prior to dosing;
Other
- Inability to provide written informed consent;
- Abnormal results on blood tests judged by the investigators to be incompatible with the study.
Who the study is looking for
- Subjects must be ≥18 and \<65 years of age;
- Able to understand and provide informed consent prior to study procedures
Age in the registry: 18 years to 65 years · Sex: All · Accepts healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Massachusetts General Hospital Coordinator of this site? Confirm its status | Boston | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.