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
Endpoint Classification: Safety/Efficacy Study
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
Genders Eligible for Study:   Both
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
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Parkinson Disease
Basal Ganglia Diseases
Brain Diseases
Central Nervous System Diseases
Movement Disorders
Nervous System Diseases
Neurodegenerative Diseases
Parkinsonian Disorders
Anti-Dyskinesia Agents
Antiparkinson Agents
Central Nervous System Agents
Dopamine Agents
Dopamine Agonists
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses processed this record on April 27, 2016