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A study on improvement of cognitive function by istradefylline for parkinson disease

An open-labeled single arm study on improvement of cognitive function by istradefylline for parkinson disease - A study on improvement of cognitive function by istradefylline for parkinson disease

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000037421
Enrollment
25
Registered
2019-08-01
Start date
2019-08-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Parkinson disease

Interventions

Prescription istradefylline 20 mg for 1 month. If there are no side effects, We increase to 40 mg and prescribe for 2 months. The assessments will be made in all patients participating the study, pat

Sponsors

Ichinomiya Nishi Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. The patients meet clinically established or clinically probable cases of clinical diagnostic criteria of Parkinson disease by Movement Disorder Society 2. The item of Attention/memory in NMSS is 1 or more. 3. The patient is treated with drugs that include L-dopa 4. The age of patients is 40 to 85years old. 5. Written consent has been obtained.

Exclusion criteria

Exclusion criteria: 1. Mini mental state examination (MMSE) is 20 points or less. 2. Istradefylline has been prescribed

Design outcomes

Primary

MeasureTime frame
Primary outcome is digit span test, arithmetic test, verval fluency test, Standard verbal paired-associate learning test, Benton visual retention test. These tests will be evaluated 12weeks later after starting treatment.

Secondary

MeasureTime frame
Secondary outcomes are Movement Disorder Society-Unified Parkinson Disease Rating Scale(MDS-UPDRS),mini-mental state examination(MMSE), Non-motor symptoms scales and freezing of gait of questionnaire(FOG-Q).

Countries

Japan

Contacts

Public ContactMasahiro Kanai

Ichinomiya Nishi Hospital Neurology

masabilliard35@yahoo.co.jp0586480077

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026