ClinicalTrials.gg
Enrolling by invitationNCT04680130AND1Updated Nov 21, 2025

Clinico-Pathologic-Genetic-Imaging Study of Neurodegenerative and Related Disorders

An observational study in PSP, CBD and PCA, sponsored by Mayo Clinic. Enrolling by invitation at 1 site in United States. Open to participants aged 21 Years and older. Per ClinicalTrials.gov, last updated 2025-11-21.

Sponsored by Mayo Clinic · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
500
Ages
21 Years and older
Sex
All
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Study summary

The investigators aim to learn more about symptoms suggestive of a neurodegenerative process.

Read the detailed description

The investigators will recruit participants with symptoms suggestive of a neurodegenerative and/or related disease. Participants could be evaluated on a yearly basis, undergoing a baseline visit and possible follow-up evaluations with an interval of one year. At each visit, participants could undergo any combination of the following based on their symptoms and complaints: a neurological assessment, a speech/language assessment, a neuropsychometric assessment, an MRI, an FDG PET/CT scan, a PiB PET/CT scan, a Tau PET/CT scan and/or a C-11 ER176 PET/CT scan. All participants will be asked to provide a blood sample to allow for future genetic studies.

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Conditions studied

  • PSP
  • CBD
  • PCA
  • LPA
  • Semantic Dementia
  • Semantic Aphasia
  • Behavioral Variant of Frontotemporal Dementia
  • FTD
  • PPA
  • Apraxia of Speech
  • MSA - Multiple System Atrophy
  • Parkinson Disease
03

In context

Frontotemporal Dementia

208 studies on the registry are indexed under Frontotemporal Dementia; 72 are open to participants now.

This study's planned enrollment of 500 is above the median of 200 across 73 observational studies indexed under Frontotemporal Dementia.

Browse Frontotemporal Dementia studies →

Lead sponsor

Mayo Clinic is the lead sponsor of 3,269 studies on the registry; 672 are open to participants now.

Of its 452 completed or terminated interventional studies of FDA-regulated products, 321 (71%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Symptoms of neurodegenerative disease

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • All participants will be over the age of 21
  • Have symptoms suggestive of a neurodegenerative and/or related disorder

Exclusion criteria

Exclusion Criteria:

  • Participants will be excluded if they have any concurrent illnesses that could account for all of their symptoms, such as traumatic brain injury, encephalitis, strokes or developmental syndromes
  • Women that are pregnant or post-partum and breast-feeding will be excluded
  • Participants will be excluded if they have any of the following genetic conditions which can increase the chance of cancer: Cowden disease, Lynch syndrome, Hypogammaglobulinemia, Wiskott-Aldrich syndrome and Down's syndrome
  • Participants will be excluded if MRI is (metal in head, cardiac pace maker, etc), if there is severe claustrophobia, if there are conditions that may confound brain imaging studies (e.g. structural abnormalities, including subdural hematoma, intracranial neoplasm or large cortical infarcts)
  • Participants will be excluded if they are medically unstable or are on medications that might affect brain structure or metabolism (e.g. chemotherapy)
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
500 participants (estimated)
Patient registry
No

Groups and cohorts

  • Neurodegenerative symptoms

    Drug: C-11 PiB · Drug: AV1451 Tau · Drug: C-11 ER176

Interventions

  • Completing PET scan looking for amyloid protein

  • Completing PET scan looking for tau protein

  • DrugC-11 ER176

    Completing PET scan looking for neuroinflammation

06

What researchers measure

Primary outcomes

  1. Imaging analysis

    Longitudinal images and correlates will be measured and tracked to determine direct correlations in the brain with disease progression on a yearly basis

    Time frame: 1 year

07

Study locations

1 site
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References and documents

Individual participant data

Plan to share: Undecided

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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Nov 2020 (actual). Primary completion is estimated for Nov 2050, 360 months after the start.

Of 46 observational studies under Frontotemporal Dementia, half reached primary completion within 88 months of starting (the median), counting those still running; a quarter within 44. This study's planned 360 months is above that.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 3, 2020
First posted
Dec 22, 2020
StartActual
Nov 1, 2020
Primary completionEst.
Nov 2050
CompletionEst.
Nov 2050
Last update
Nov 21, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Nov 21, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04680130
Lead sponsor
Mayo Clinic
Responsible party
Keith A. Josephs (Professor of Neurology, Mayo Clinic) — Principal investigator
First posted
Dec 22, 2020
Start date
Nov 1, 2020
Primary completion
Nov 2050 (estimated)
Completion
Nov 2050 (estimated)
Last update
Nov 21, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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