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Long-Term Dopamine Transporter Imaging and Clinical Assessment of Parkinson's Disease Progression (ELLDOPA)

This study has been completed.
United States Department of Defense
Information provided by (Responsible Party):
Kenneth Marek, MD, Institute for Neurodegenerative Disorders Identifier:
First received: August 23, 2005
Last updated: July 15, 2014
Last verified: July 2014
The purpose of this project is to assess the change in dopamine transporter density in Parkinson's disease subjects during a sixty month period including a nine month treatment trial of levodopa. Dopamine transporter will be assessed using [123I]ß-CIT SPECT (single photon emission computed tomography) imaging, a marker of dopamine terminal integrity and of clinical disease state.

Condition Intervention Phase
Parkinson Disease
Drug: [123I]B-CIT SPECT imaging
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: [123I]ß-CIT and SPECT in Vivo Three Year Imaging Assessment of Dopamine Transporter Density in Subjects With Early Parkinson's Disease Participating in Earlier vs. Later Levodopa in Parkinson's Disease

Resource links provided by NLM:

Further study details as provided by Institute for Neurodegenerative Disorders:

Primary Outcome Measures:
  • Change in the Ratio of the Specific Striatal [123I]B-CIT Uptake to the Nondisplaceable Striatal [123I]B-CIT Uptake Between the Two Images [ Time Frame: 40 weeks ]
    The use of SPECT to measure striatal dopamine-transporter density with the use of [123I]B-CIT. Subjects underwent SPECT imaging just before the baseline visit and then again before the visit at week 40.

Enrollment: 142
Study Start Date: April 2000
Study Completion Date: May 2007
Primary Completion Date: May 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Assess [123I]B-CIT SPECT imaging
To assess[123I]B-CIT SPECT imaging in early Parkinson's disease subjects on placebo compared to early verses later Levodopa. Subjects on Levodopa 150mg/day, Levodopa 300 mg/day, and Levodopa 600 mg/day will be assessed.
Drug: [123I]B-CIT SPECT imaging
To assess [123I]B-CIT SPECT imaging
Other Name: [123I]B-CIT

Detailed Description:

All subjects will be imaged at the Institute for Neurodegenerative Disorders.

Subjects will be evaluated sequentially with [123I]ß-CIT SPECT and standardized clinical rating scales during a sixty month period. The subjects involved in this study will have had [123I]ß-CIT and SPECT scans at baseline and return for scanning at week 40 following the start of their participation in the ELLDOPA study.

Before each SPECT procedure subjects will be tested to ensure eligibility for the study. They will also have a neurological evaluation including tests of motor function, thinking, memory and handwriting. Some of these tests will be given with the aid of a computer.

On the first day participants are injected with [123I]ß-CIT, an investigational radioactive material that localizes in the brain. Study participants will also have a thorough neurologic examination and standard neuropsychological testing, including testing of memory, concentration, abstraction and visual spatial functions.

Twenty-four hours later study participants return to the Institute for Neurodegenerative Disorders where an investigational scanning procedure will be used to obtain SPECT (single photon emission computed tomography) images of the brain.


Ages Eligible for Study:   22 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Prior participation in the study titled Dopamine Transporter Imaging Assessment of Parkinson's Disease Progression (DAMD17-99-1-9472) [123I] B-CIT and Spect in Vivo Imaging Assessment of Dopamine Transporter Density in Subjects With Early Parkinson's Disease Participating in Earlier Vs. Later Levodopa in Parkinson's Disease (ELLDOPA)].

Exclusion Criteria:

  • Inability to sign informed consent and participate in all study procedures.
  • Mini mental status exam < 25.
  • Pregnancy
  Contacts and Locations
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Please refer to this study by its identifier: NCT00134784

Sponsors and Collaborators
Institute for Neurodegenerative Disorders
United States Department of Defense
Principal Investigator: Kenneth L Marek, MD Institute for Neurodegenerative Disorders
  More Information

Additional Information:
Responsible Party: Kenneth Marek, MD, Principal Investigator, Institute for Neurodegenerative Disorders Identifier: NCT00134784     History of Changes
Other Study ID Numbers: Elldopa
Study First Received: August 23, 2005
Results First Received: October 7, 2010
Last Updated: July 15, 2014

Keywords provided by Institute for Neurodegenerative Disorders:
brain imaging

Additional relevant MeSH terms:
Parkinson Disease
Parkinsonian Disorders
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Movement Disorders
Neurodegenerative Diseases
Antiparkinson Agents
Anti-Dyskinesia Agents
Dopamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Cardiotonic Agents
Autonomic Agents
Peripheral Nervous System Agents
Protective Agents processed this record on May 25, 2017