This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Study Evaluating Sumanirole for the Treatment of the Signs and Symptoms of Early Parkinson's Disease.

This study has been completed.
Information provided by:
Pfizer Identifier:
First received: May 8, 2002
Last updated: June 6, 2006
Last verified: June 2006
The primary purpose of this study is to determine whether sumanirole is effective and safe in the treatment of the signs and symptoms of early Parkinson's disease.

Condition Intervention Phase
Parkinson Disease Drug: sumanirole Drug: ropinirole Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: A Phase III, Double-Blind, Placebo-Controlled, Randomized Study Comparing the Efficacy, Safety, and Tolerability of Sumanirole Versus Placebo or Ropinirole in Patients With Early Parkinson's Disease.

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Change from baseline in UPDRS (Unified Parkinson's Disease Rating Scale) II + III total scores at end of maintenance, for sumanirole compared to placebo

Secondary Outcome Measures:
  • To assess the safety profile of sumanirole; the benefit of sumanirole in quality of life measures, and change from baseline in UPDRS II + III total scores at end of maintenance, for sumanirole compared to ropinirole

Estimated Enrollment: 600
Study Start Date: December 2001
Estimated Study Completion Date: April 2003

Ages Eligible for Study:   30 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

Parkinson's disease of less than 7 years duration

Modified Hoehn and Yahr Scale Stages 1 through 3.

Age greater than or equal to 30 years old.

Men or women (women of childbearing potential must have a negative pregnancy test at screen) and both must use adequate contraceptive methods.

Patients who are willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.

Exclusion Criteria:

Atypical Parkinson's disease syndromes due to drugs, metabolic disorders, encephalitis, or degenerative diseases.

Levodopa received for 1-year accumulated interval in the last two years.

Dopamine agonist medications or catechol-o-methyl transferase inhibitors in the 30 days prior to baseline.

Unstable dose regimes of hypnotics, anxiolytics or antidepressants


History of stereotaxic brain surgery, psychosis or active epilepsy within past year.

Participation in clinical trial within the previous 30 days.

Malignant melanoma or history of melanoma

Significant medical or pshychiatric condition.

  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00036218

  Show 102 Study Locations
Sponsors and Collaborators
Study Director: Pfizer Call Center Pfizer
  More Information

Additional Information: Identifier: NCT00036218     History of Changes
Other Study ID Numbers: 666E-CNS-0075-021
Study First Received: May 8, 2002
Last Updated: June 6, 2006

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 Agonists
Dopamine Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs processed this record on August 16, 2017