Research Involving Subjects With Parkinson's Disease, Alzheimer Disease and Healthy Controls

Evaluation of [18F] CFPyPB PET as a Marker of Glycine Transporter-1 (GlyT1) Receptor in Subjects With Parkinson Disease, Alzheimer Disease and Healthy Subjects

The underlying goal of this study is to assess [18F] CFPyPB PET imaging as a tool to evaluate the activity of the GlyT1 receptors in the brain of Parkinson's Disease (PD) and Alzheimer Disease (AD) research participants.

Study Overview

• Status: Completed
• Conditions: Parkinson Disease; Alzheimer Disease
• Intervention / Treatment: Drug: [18F] CFPyPB

Detailed Description

Approximately 6 subjects with Parkinson disease, 6 subjects with Alzheimer disease and 20 healthy control subjects will be recruited to participate in this study. All subjects will undergo written informed consent and a screening evaluation including baseline clinical laboratory testing, a baseline physical and neurological evaluation and baseline cognitive evaluations. Subjects will be asked to undergo a bolus injection of [18F] CFPyPB followed by serial PET imaging scans and plasma sampling for measurement of [18F] CFPyPB in plasma (both protein bound and free) over a period of up to 4 hours. The imaging analyses will be performed by an image-processing specialist who will remain masked to the procedures employed with each imaging acquisition. The primary imaging outcome measure will be the brain regional distribution volumes expressed as a brain tissue to plasma ratio of the radioligand, [18F] CFPyPB. Time to the peak uptake and amplitude of the peak uptake will be evaluated for all brain regions and the results for the PD and AD subjects will be compared with the HC subjects.

At least 2 weeks following the initial imaging visit subjects (up to 2 PD subjects, up to 2 AD subjects and up to 5 HC subjects) may be asked to return for a second injection and scanning procedure to evaluate the reproducibility of the imaging measure using this procedure. Subjects may decline participation in the second scan. Subjects will be requested to return for this second scan until enough second scan data is collected to evaluate the imaging outcome measure for reproducibility.

• Study Type: Interventional
• Enrollment (Actual): 4
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • Connecticut
    • New Haven, Connecticut, United States, 06510
      • Institute_Neurodegenerative_Disorders

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 90 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

PD subject inclusion criteria:

• The participant is 30 years or older.
• Written informed consent is obtained.
• Participants have a diagnosis of PD (based on UK Brain Bank Criteria).
• Modified Hoehn and Yahr stage of 1 - 4.
• For females, non-child bearing potential or a negative urine or blood pregnancy test on day of [18F] CFPyPB injection.

PD subject exclusion criteria:

• The subject has a clinically significant abnormal laboratory value and/or clinically significant unstable medical or psychiatric illness.
• The subject has any disorder that may interfere with drug absorption, distribution, metabolism, or excretion.
• The subject has evidence of clinically significant gastrointestinal, cardiovascular, hepatic, renal, hematological, neoplastic, endocrine, neurological, immunodeficiency, pulmonary, or other disorder or disease.
• The subject has any contraindication to MRI examination, e.g. metal implants or phobia as determined by the onsite radiologist performing the scan.
• The subject is a pregnant or nursing mother

AD subject inclusion criteria:

• The participant is 50 years or older.
• Written informed consent is obtained.
• Participants have a clinical diagnosis of probable Alzheimer disease in accordance with the DSM-IV-TR and according to (NINCDS/ADRDA) criteria.
• Participants do not fulfill the ICC criteria for probable DLB, the NINDS-AIREN for probable vascular dementia, or the Neary [Neary, et al. 1998] criteria for FTD.
• Clinical Dementia Rating Scale score 0.5, 1 or 2.
• Modified Hachinski Ischemia Scale score of ≤ 4.
• Geriatric Depression Scale (GDS) ≤ 10.
• For females, non-child bearing potential or a negative urine or blood pregnancy test on day of [18F] CFPyPB injection.

AD subject exclusion criteria:

• The subject has a clinically significant abnormal laboratory value and/or clinically significant unstable medical or psychiatric illness
• The subject has any disorder that may interfere with drug absorption, distribution, metabolism, or excretion.
• The subject has evidence of clinically significant gastrointestinal, cardiovascular, hepatic, renal, hematological, neoplastic, endocrine, neurological, immunodeficiency, pulmonary, or other disorder or disease.
• The subject has any contraindication to MRI examination, e.g. metal implants or phobia as determined by the onsite radiologist performing the scan.
• The subject is a pregnant or nursing mother.

Healthy volunteer inclusion criteria:

• The participant is 18 years or older.
• Written informed consent is obtained.
• Negative history of neurological or psychiatric illness based on evaluation by a research physician.
• For females, non-child bearing potential a negative urine or blood pregnancy test on day of [18F] CFPyPB injection.

Healthy volunteer exclusion criteria:

• The subject has a clinically significant abnormal laboratory value and/or clinically significant unstable medical or psychiatric illness.
• The subject has evidence of clinically significant gastrointestinal, cardiovascular, hepatic, renal, hematological, neoplastic, endocrine, neurological, immunodeficiency, pulmonary, or other disorder or disease.
• The subject has any disorder that may interfere with drug absorption, distribution, metabolism, or excretion.
• The subject has any contraindication to MRI examination, e.g. metal implants or phobia as determined by the onsite radiologist performing the scan.
• The subject is a pregnant or nursing mother.

Study Plan

How is the study designed?

Design Details

• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Assess [18F] CFPyPB and PET imaging; To assess [18F]CFPyPB and PET imaging	Drug: [18F] CFPyPB; Each subject will receive a bolus injection targeted to be 5 mCi and not to exceed 5.5 mCi (not >10% of 5 mCi limit) of [18F]CFPyPB or 5 μg of CFPyPB (whichever is greatest).

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
To assess the dynamic uptake and washout of [18F] CFPyPB	To assess the dynamic uptake and washout of [18F] CFPyPB, an imaging tracer targeting the glycine transporter-1 (GlyT1) receptor in brain, using positron emission tomography (PET) in subjects with Parkinson disease (PD) Alzheimer disease (AD) and healthy controls (HC).	Approximately 2 years

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Perform blood metabolite characterization of [18F] CFPyPB	To perform blood metabolite characterization of [18F] CFPyPB in subjects with PD, AD and HC to determine the nature of metabolites in assessment of [18F] CFPyPB as a single positron computed tomography (PET) brain imaging agent.	Approximately 2 years
To obtain safety data	To acquire safety data following injection of [18F] CFPyPB	Approximately 2 years
Obtain test/retest reproductibility	To obtain test/retest reproducibility of quantitative PET outcome measures with [18F] CFPyPB	Approximately 2 years

Collaborators and Investigators

• Sponsor: Institute for Neurodegenerative Disorders

Publications and helpful links

Helpful Links

• Institute for Neurodegenerative Disorders

Study record dates

Study Major Dates

• Study Start: August 1, 2011
• Primary Completion (Actual): September 1, 2012
• Study Completion (Actual): May 1, 2014

Study Registration Dates

• First Submitted: September 27, 2011
• First Submitted That Met QC Criteria: October 25, 2011
• First Posted (Estimate): October 27, 2011

Study Record Updates

• Last Update Posted (Estimate): June 4, 2014
• Last Update Submitted That Met QC Criteria: June 2, 2014
• Last Verified: June 1, 2014

More Information

Terms related to this study

• Keywords: Alzheimer Disease; Parkinson Disease; [18F] CFPyPB; GlyT1
• Additional Relevant MeSH Terms: Mental Disorders; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Neurocognitive Disorders; Parkinsonian Disorders; Basal Ganglia Diseases; Movement Disorders; Synucleinopathies; Neurodegenerative Diseases; Dementia; Tauopathies; Parkinson Disease; Alzheimer Disease
• Other Study ID Numbers: GlyT1-01