Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Nov 7, 2026, 3:52 PM EST

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Showing 1–3 of 3 matching trials from the live ClinicalTrials.gov search.
Conditions
Parkinson Disease
Interventions
sumanirole, ropinirole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
30 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2003
U.S. locations
93
States / cities
Hot Springs, Arkansas • Little Rock, Arkansas • Carmichael, California + 81 more
Conditions
Parkinson Disease
Interventions
sumanirole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
30 Years and older
Enrollment
854 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
69
States / cities
Birmingham, Alabama • Huntsville, Alabama • Little Rock, Arkansas + 60 more
Conditions
Parkinson Disease
Interventions
sumanirole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
30 Years and older
Enrollment
984 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
103
States / cities
Birmingham, Alabama • Peoria, Arizona • Tucson, Arizona + 100 more