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Parkinson's DiseaseNCT01003002

Natural History of Levodopa-Induced Dyskinesia (LID)

An observational study of Parkinson's Disease, run by Oregon Health and Science University at 1 site in United States.

Withdrawn

Withdrawn. The study stopped before anyone enrolled.

Official record
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Trial summary

Levodopa is the main drug treatment for Parkinson's disease. Levodopa can cause unwanted and uncontrolled movements called dyskinesias (LID). The severity of these movements can range from subtle to extremely debilitating. Read more about this study

Who is it for?
Ages 21 to 100 years
Conditions the study is for
Parkinson's Disease
What is being tested?
Levodopa (delivered intravenously)
How many people
0 participants
Where
1 siteUnited States
Study dates
Dec 2010to Dec 2020
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 21 to 100 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: Parkinson's disease

Who may be able to join

  • Diagnosis of Parkinson's disease
  • At least 21 years of age
  • Levodopa treatment that will be orally initiated no more than 1 month after the screening visit for the study.

Who cannot join

  • Unable to stand for 1 minute intervals
  • Sensory deficits in the feet
  • Significant cognitive impairment
  • Unstable medical or psychiatric conditions (including hallucinations)
  • History of dopamine receptor blocking medications (Haldol, Orap, Zyprexa)

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Oregon Health & Science University

    Portland, Oregon, 97239

Other trials in United States

About this study

Official title: Determining the Natural History of Levodopa-Induced Dyskinesia (LID)

Levodopa is the main drug treatment for Parkinson's disease. Levodopa can cause unwanted and uncontrolled movements called dyskinesias (LID). The severity of these movements can range from subtle to extremely debilitating. These movements may or may not interfere with normal activities such as putting on a coat or brushing ones teeth. Current estimates of the occurrence rate of LID range from 12 % to 100% after one year of levodopa treatment. These estimates used reporting mechanisms such as self-report and doctor-reported. These reporting mechanisms are not reliable. We will use an objective measure of dyskinesia in the first 5 years of treatment for Parkinson's disease. The purpose of this protocol is to use an objective measure to estimate dyskinesia onset.

Read the detailed description

Nearly all Parkinson's disease (PD) patients eventually develop abnormal and unwanted movements (dyskinesias; LID) caused by the gold standard treatment, Levodopa. The severity of these movements can range from subtle to extremely debilitating and may or may not interfere with normal activities such as putting on a coat or brushing ones teeth. Current estimates of the prevalence of LID widely range from 12 % to 100% affected after one year. The purpose of this study is to estimate the median onset time of levodopa induced dyskinesia in newly treated Parkinson's disease patients. All participants will complete seven overnight visits at the OCTRI Inpatient unit over 5 years. During the next day, participants will complete a mental task while standing on a force plate for one minute every half hour until the end of the study. A levodopa IV infusion will occur from 0900 to 1100.

Being tested
Levodopa (delivered intravenously)
Keywords
Parkinson's disease, Dyskinesia, Movement Disorders
Medical subject headings
Parkinson Disease, Dyskinesias, Movement Disorders

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Levodopa (delivered intravenously)Drug

    One mg/kg/hr of Levodopa will be given intravenously during inpatient testing days from 0900 to 1100.

Study groups in NCT01003002
Study groupRoleWhat they receive
PD CohortThe cohort for this study is Parkinson's disease patients that are beginning oral levodopa treatment within one month of the screening visit. This cohort has not previously (to the screening visit) been treated with oral levodopa.
Receives: Drug: Levodopa (delivered intravenously)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Levodopa-Induced Dyskinesia

    Measured: 5 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Oct 2009 (estimated)
  2. Study startDec 2010
  3. Primary completionDec 2020 (estimated)
  4. Study completionDec 2020 (estimated)

Why it stopped: Funding not secured.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
0 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01003002
Sponsor's protocol ID
e4773
Status last verified
Oct 2009
First submitted
27 Oct 2009
Last updated
6 Apr 2016
Results posted
No
Data monitoring committee
No

Publications

  • Muller T, Woitalla D, Russ H, Hock K, Haeger DA. Prevalence and treatment strategies of dyskinesia in patients with Parkinson's disease. J Neural Transm (Vienna). 2007;114(8):1023-6. doi: 10.1007/s00702-007-0718-4. Epub 2007 Apr 10.

    PubMed 17417738
  • Parkinson Study Group. Pramipexole vs levodopa as initial treatment for Parkinson disease: A randomized controlled trial. Parkinson Study Group. JAMA. 2000 Oct 18;284(15):1931-8. doi: 10.1001/jama.284.15.1931.

    PubMed 11035889
  • Rascol O, Brooks DJ, Korczyn AD, De Deyn PP, Clarke CE, Lang AE. A five-year study of the incidence of dyskinesia in patients with early Parkinson's disease who were treated with ropinirole or levodopa. N Engl J Med. 2000 May 18;342(20):1484-91. doi: 10.1056/NEJM200005183422004.

    PubMed 10816186
  • Nutt JG, Carter JH, Lea ES, Sexton GJ. Evolution of the response to levodopa during the first 4 years of therapy. Ann Neurol. 2002 Jun;51(6):686-93. doi: 10.1002/ana.10189.

    PubMed 12112073
  • McColl CD, Reardon KA, Shiff M, Kempster PA. Motor response to levodopa and the evolution of motor fluctuations in the first decade of treatment of Parkinson's disease. Mov Disord. 2002 Nov;17(6):1227-34. doi: 10.1002/mds.10244.

    PubMed 12465061

Questions about this trial

What is this clinical trial studying?

An observational study of Parkinson's Disease, run by Oregon Health and Science University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: withdrawn, as of the sponsor's last update on 6 Apr 2016. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study was withdrawn before enrolling participants, so there are no results.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Levodopa-Induced Dyskinesia (time frame: 5 years). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01003002, which also lists 5 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Apr 2016.

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