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Parkinson's Disease, Diagnostic Observations (PADDO) (PADDO)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01249768
Recruitment Status : Unknown
Verified March 2016 by Marjolein Aerts, Radboud University.
Recruitment status was:  Recruiting
First Posted : November 30, 2010
Last Update Posted : March 31, 2016
Information provided by (Responsible Party):
Marjolein Aerts, Radboud University

Brief Summary:


Parkinson's Disease and the Atypical Parkinsonian Disorder (like Multiple System Atrophy, Progressive Supranuclear Palsy, Corticobasal Degeneration, Lewy Body Dementia) are disease entities with partly common symptomatology. Especially very early in the course of disease, the differentiation between both disease entities can be challenging, even for specialists in the field of movement disorder. However, the establishment of a correct diagnosis is very important for adequate patientcounseling, treatment and the correct inclusion of patients in research trials. Ancillary diagnostic investigations are looked upon to aid in this diagnostic dilemma.


To investigate the value of ancillary diagnostic investigations, more specific MRI, analysis of cerebrospinal fluids and a second opinion in a specialized movement disorder centre, to differentiate Parkinson's disease and the Atypical Parkisonisonian disorder.

Condition or disease
Parkinson's Disease Atypical Parkinsonism

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Study Type : Observational
Estimated Enrollment : 150 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Observational Study Assessing the Diagnostic Contribution of 3-Tesla MRI, CSF Analysis and a Second Opinion in a Specialized Movement Disorder Centre, in Differentiating Between Parkinson's Disease and Atypical Parkinsonism
Study Start Date : July 2010
Estimated Primary Completion Date : July 2017
Estimated Study Completion Date : July 2018

Resource links provided by the National Library of Medicine

The cohort will consist of 150 patients with a hypokinetic rigid syndrome and a disease duration of maximum 36 months

Primary Outcome Measures :
  1. percentage of correct diagnosis for each of the specified ancillary investigations [ Time Frame: 36 months ]
    Percentage of correct diagnosis for each of the specified ancillary investigations to differentiate between either PD or atypical parkinsonism

Secondary Outcome Measures :
  1. Percentage of correct diagnosis for each of the specified ancillary investigations [ Time Frame: 36 months ]
    Percentage of correct diagnosis for each of the specified ancillary investigations(MRI, CSF analysis, and second opinion) to differentiate between the specific diagnosis (PD, MSA, PSP, CBD, LBD, VaP)

Biospecimen Retention:   Samples With DNA
Whole blood, cerebrospinal fluids

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Adult patients with a hypokinetic-rigid syndrome with a disease duration of maximum 36 months and in whom a definitive diagnosis has not been established yet.

Inclusion Criteria:

  • Hypokinetic rigid syndrome
  • Disease duration of maximum 36 months

Exclusion Criteria:

  • Probable diagnosis of PD without any red flags
  • Probable diagnosis MSA
  • Probable diagnosis PSP
  • Diagnosis CBD
  • Diagnosis DLB
  • Probable diagnosis Vascular Parkinsonism
  • Other neurodegenerative disease than parkinsonism
  • A prior history of brain surgery
  • Instable comorbidity

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01249768

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Contact: B Bloem, Prof, MD

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Radboud University Medical Centre Recruiting
Nijmegen, Netherlands
Sponsors and Collaborators
Radboud University
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Principal Investigator: M Verbeek, PhD, MSc Radboud University
Principal Investigator: B Bloem, Prof, MD Radboud University
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Marjolein Aerts, dr. M.B. Aerts, Radboud University Identifier: NCT01249768    
Other Study ID Numbers: PADDO
First Posted: November 30, 2010    Key Record Dates
Last Update Posted: March 31, 2016
Last Verified: March 2016
Keywords provided by Marjolein Aerts, Radboud University:
Prospective study
diagnostic accuracy
Additional relevant MeSH terms:
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Parkinson Disease
Parkinsonian Disorders
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Movement Disorders
Neurodegenerative Diseases