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Clinical Trial Summary

The purpose of this research study is to determine whether istradefylline improves cognition in individuals with Parkinson disease with cognitive impairment.


Clinical Trial Description

Istradefylline has been approved by the U. S. Food and Drug Administration (FDA) to reduce "off" episodes in Parkinson disease. The period when levodopa has a positive effect on Parkinson's symptoms is called on-time. Once the medication stops working, a so called "off" episode starts, where symptoms recur. Usual care for treatment of Parkinson disease with cognitive impairment is use of cognition enhancing medications also called cholinesterase inhibitors. In this study, participants will receive usual care, and in addition, they will be asked to take istradefylline daily for 26 weeks. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05333549
Study type Interventional
Source Virginia Commonwealth University
Contact Kara McHaney
Phone 804-828-4788
Email kara.mchaney@vcuhealth.org
Status Recruiting
Phase Phase 2
Start date July 18, 2022
Completion date July 2025

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