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CompletedNCT03386669Updated Jan 27, 2021

Novel Neuroimage Study in Tauopathies With Parkinsonism

A Phase 2 interventional study of F-18 in Parkinsonism, sponsored by Chang Gung Memorial Hospital. Completed at 1 site in Taiwan. Open to participants aged 20 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2021-01-27.

Sponsored by Chang Gung Memorial Hospital · Phase 2, Interventional, and Diagnostic

Phase
Phase 2
Study type
Interventional
Enrollment
44
Allocation
Not applicable
Ages
20 Years to 80 Years
Sex
All
01

Study summary

The aims of this study are: 18F-THK5351 PET(Positron Emission Tomography) can defect the tau burden in PSP(Progressive Supranuclear Palsy) and CBS (Corticobasal syndrome)correlating with the known NFT(neurofibrillary tangles) topology of those diseases, 18F-THK5351 PET will differentiate subjects with suspected tauopathy due to PSP and CBS from subjects with suspected synucleinopathy due to idiopathic PD(Parkinson's disease). The distribution of PHF(paired helical filament) tau burden will correlate with specific motor and cognitive features of PSP and CBS; and regional PHF tau burden will be associated with cortical thinning. Together, these efforts will establish the potential for developing 18F-THK5351 PET imaging as a biomarker and diagnostic tool for the parkinsonian tauopathies.

02

Conditions studied

  • Parkinsonism

Keywords

  • 18F-THK5351 PET
  • Tauopathies
03

In context

Parkinsonian Disorders

218 studies on the registry are indexed under Parkinsonian Disorders; 63 are open to participants now.

This study's enrollment of 44 is below the median of 50 across 137 interventional studies indexed under Parkinsonian Disorders.

Browse Parkinsonian Disorders studies →

Lead sponsor

Chang Gung Memorial Hospital is the lead sponsor of 1,096 studies on the registry; 239 are open to participants now.

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

04

Who can participate

Ages eligible
20 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

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

  1. 20 subjects with a diagnosis of PD whom must:

    • Age ranges from 20-80 years
    • Patients should be fulfilled "UK(United Kingdom ) Parkinson's Disease Society Brain Bank Criteria for the diagnosis of PD", 2.11.1 Appendix I, (27)
    • Patients who provide a written prior to study entry. If the patient is incapable of informed consent, the caregiver may consent on behalf of the patient (the patient must still confirm assent).
  2. 20 subjects with a diagnosis of PSP whom must:

    • Age ranges from 20-80 years
    • Patients fulfill the criteria of NINDS-SPSP(National Institute of Neurological Disorders and Stroke / Society for PSP) clinical criteria for the diagnosis of PSP "as possible" or "probably" PSP, 2.11.2 Appendix II, (28)
    • Patients who provide a written informed consent prior to study entry. If the patient is incapable of informed consent, the caregiver may consent on behalf of the patient (the patient must still confirm assent).
  3. 20 subjects with a diagnosis of CBS whom must:

    • Age ranges from 20-80 years
    • Patients should be fulfilled the "Mayo Clinic proposed criteria for the diagnosis for corticobasal syndrome" , 2.11.3 Appendix III, (29)
    • Patients who provide a written informed consent prior to study entry. If the patient is incapable of informed consent, the caregiver may consent on behalf of the patient (the patient must still confirm assent).

Exclusion criteria

Exclusion Criteria:

  1. Implantation of metal devices including cardiac pacemaker, intravascular metal devices.
  2. Major systemic diseases including coronary arterial disease, heart failure, uremia, hepatic failure, prominent strokes, acute myocardial infarction, poorly controlled diabetes, previous head injury, intracranial operation, hypoxia, sepsis or severe infectious diseases
  3. Major psychiatric disorders, drug or alcohol abuse and major depression
  4. Pregnant women or breast- feeding women
  5. Patients in whom MRI was
  6. History of severe allergic or anaphylactic reactions particularly to the tested drugs
  7. Indication of impaired liver function as shown by an abnormal liver function profile at screening (eg. repeated values of [AST(aspartate aminotransferase)] and alanine aminotransferase [ALT(Alanine aminotransferase)] ≧ 3X(3 Times) the values)
Terms in these criteria, in plain language(4)

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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

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.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

05

Study design

Phase
Phase 2
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
44 participants (actual)

Study arms

  • Experimental
    F-18 AV-45 THK-5351

    F-18 AV-45 THK-5351 imaging

    Drug: F-18

Interventions

  • DrugF-18

    Totally 60 subjects age 20-80 including 20 subjects with a diagnosis of PD,PSP,and CBS. For disease subjects, caregiver should be able to report activities of daily living and their mental status. Patient should be able to give informed consent or have a caregiver give consent with subject assent.

    Also known as: F-18 THK-5351, F-18 AV-45

06

What researchers measure

Primary outcomes

  1. To establish Tau image pattern for Tauopathies with parkinsonism.

    Use ANOVA analysis(Analysis of variance) to significant differences in regional 18F-THK-5351 uptake between PSP, CBS and PD groups.

    Time frame: YEAR ONE

07

Study locations

1 site
  • Chang Gung Memorial Hospital,Linkou
    Taoyuan City, Guishan Dist 333, Taiwan
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 27, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03386669
Responsible party
Sponsor
First posted
Dec 29, 2017
Start date
Jul 31, 2017
Primary completion
Jul 31, 2019
Completion
Jul 31, 2019
Last update
Jan 27, 2021

Oversight

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

Not currently enrolling

This study is completed, as verified in Jan 2021. You cannot join it, but the record below documents what was studied.

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