Imaging Non-motor Symptoms of Parkinson's Disease by Novel 18F-DTBZ and Florbetapir F-18 PET

Study Overview
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Brief Summary
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The primary objective of this protocol is to investigate the monoaminergic (dopamine、serotonin、and norepinephrine ) nervous system and amyloid deposition in Parkinson's disease patients with non-motor symptoms (focus on impulse control disorders and dementia) by novel 18F-DTBZ and Florbetapir F-18 PET imaging. This study will compare the amyloid deposition of brain by florbetapir F-18 PET imaging and monoaminergic function by18F- DTBZ PET in NC group, PD group, PDD group, AD group. Investigators will also analyze monoaminergic function by18F- DTBZ PET in PDI group.

Detailed Description
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Study duration is expected to be completed in a period of 3 year. This study will compare the amyloid deposition of brain by florbetapir F-18 PET imaging and monoaminergic function by18F- DTBZ PET in 10 age-matched healthy subjects (NC group), 30 PD patients without dementia/ICD (PD group), 30 PD patients with dementia (PDD group), and 20 patients with dementia (AD group). We will also analyze monoaminergic function by18F- DTBZ PET in 30 PD patients with ICD (PDI group). Each evaluable subject involved in this study must fulfill all the inclusion and exclusion criteria according the subject grouping, healthy subjects, PD, PDD, and AD patients will have 4 visits in this study ,as one screening visit, one florbetapir F-18 imaging visit, one 18F-DTBZ imaging visit, and one safety evaluation.PDI patients will have 3 visits in this study, as one screening visit, one 18F-DTBZ imaging visit, and one safety evaluation. Safety measurement will be evaluated by medical history, vital signs, physical examinations, laboratory examinations and collecting of adverse events.

Official Title
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Imaging Non-motor Symptoms of Parkinson's Disease by Novel 18F-DTBZ and Florbetapir F-18 PET

Conditions
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Parkinson's Disease

Intervention / Treatment
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* Drug: 18F- DTBZ


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1.10 healthy subjects : i. Male or female subjects, age range 20 80. ii. Subjects have no known neurological or psychiatric disease. However, mild peripheral neuropathies, such as entrapment syndrome or sciatica are allowed.iii. Subjects who provide a written informed consent prior to study entry. 2.30 subjects with a diagnosis of PD : i. Male or female patients, age range 20 80. ii. Patients should be fulfilled UK Parkinson's Disease Society Brain Bank Clinical Diagnostic Criteria as PD. (Appendix I).iii. Patients should not have any clinical evidence of dementia or ICD. iv. 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). 3.30 subjects with a diagnosis of PD with dementia : i. Male or female patients, age range 20 80.ii. Patients should be fulfilled the Movement Disorders Society diagnostic criteria of PDD as possible or probable PDD (Emre, 2006). (Appendix II) iii. 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).iv. 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). 4.20 subjects with a diagnosis of AD : i. Male or female patients, age range 20 80. ii. Patients should be fulfilled the DSM-IV-TR Diagnostic criteria for Alzheimer's Disease as AD. (Appendix III).iii. 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).iv. 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). 5.30 subjects with a diagnosis of PD with ICD : i. Male or female patients, age range 20 80. ii. Patients should be fulfilled one of the diagnostic criteria or definition in these ICDs: pathological gambling, hypersexuality, compulsive shopping, compulsive eating, punding, and compulsive medication use (Voon, 2009). (Appendix IV).iii. 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).iv. 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: Pregnant or becoming pregnant during the study (as documented by pregnancy testing at screening or at any date during the study according to the PI discretion) or current breast feeding. Any subject who has a clinically significant abnormal laboratory values, and/or clinically significant or unstable medical or psychiatric illness. History of drug or alcohol abuse within the last year, or prior prolonged history of abuse. History of intracranial operation, including thalamotomy, pallidotomy, and/or deep brain stimulation. Any documented abnormality in the brain by CT or MRI of brain, which might contribute to the motor function, such as hydrocephalus, multiple infarction and encephalomalacia, will be excluded. Mild cortical atrophy and non-specific white matter changes will be allowed. Any evidence of secondary parkinsonism (multiple infarcts, intoxication, and hydrocephalus, etc) or other neurodegenerative diseases (multiple system atrophy, progressive supranuclear palsy). History of allergy to radioligands that contain 18F isotope.

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 80 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Diagnostic
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 18F- DTBZ for Parkinson's Disease<br>This study will compare the amyloid deposition of brain by florbetapir F-18 PET imaging and monoaminergic function by18F- DTBZ PET in 10 NC group, 30 PD group, 30 PDD group, 20 AD group. We will also analyze monoaminergic function by18F- DTBZ PET in 30 PDI group. Each evaluable subject involved in this study must fulfill all the inclusion and exclusion criteria according the subject grouping, healthy subjects, PD, PDD, and AD patients will have 4 visits in this study. PDI patients will have 3 visits in this study. Safety measurement will be evaluated by medical history, vital signs, physical examinations, laboratory examinations and collecting of adverse events. | Drug: 18F- DTBZ<br>* During this study, subjects will receive a single i.v. administration of approximately 370MBq (10 mCi) 18F- DTBZ immediately prior to imaging. The dosage of DTBZ is 10 nmole. The effective dose in human body is about 5.6 mSV. During this study, subjects will receive a single i.v. administration of approximately 370MBq (10 mCi) florbetapir F-18 immediately prior to imaging. The dosage of DTBZ is 10 nmole. The effective dose in human body is about 5.6 mSV. The proposed dose for this study is based on our phase I study. At the proposed human dose of 10 mCi, the whole body effective dose (ED) will be approximately 680 mrem. The estimated human ED is expected to be comparable to or below the range of other approved brain imaging agents, such as 18F-FDG (Lin 2010).<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| To compare the amyloid deposition of brain by florbetapir F-18 PET imaging and monoaminergic function by18F- DTBZ PET | To compare the amyloid deposition of brain by florbetapir F-18 PET imaging and monoaminergic function by18F- DTBZ PET in NC group, PD group, PDD group, AD group. During this study, subjects will receive a single i.v. administration of approximately 370MBq (10 mCi) florbetapir F-18 immediately prior to imaging. | 3 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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18F-DTBZ