findmyKOL
Clinical trialNCT00199420CompletedPhase 3Interventional

A Study of Istradefylline (KW-6002) in Treating Patients With Parkinson's Disease on Levodopa

SponsorKyowa Kirin, Inc.Enrollment580Parkinson's Disease
View the registry record on ClinicalTrials.gov

Summary

The registered summary isn't in our current data snapshot. Read it on the ClinicalTrials.gov record ↗. Why? →

Investigators

The overall officials registered on this study. Names that resolve to a findmyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

2 registered facilities, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Kyowa Pharmaceutical

    Princeton, New Jersey, United States

  • Kyowa Pharmaceutical Inc.

    Princeton, New Jersey, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study — it may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
31 Jul 2004
Primary completion
30 Nov 2005
Completion
31 Dec 2005
Last update posted
25 Apr 2024
Registered enrollment
580
Registry id
NCT00199420

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 12 Jul 2026. Registry facts are shown as registered by the study sponsor; findmyKOL does not interpret them.