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A randomized, double-blind, placebo-controlled, cross-over, multi-center study concerning the efficacy and safety of amantadine hydrochloride in treatment of dyskinesias in Parkinson's disease

A randomized, double-blind, placebo-controlled, cross-over, multi-center study concerning the efficacy and safety of amantadine hydrochloride in treatment of dyskinesias in Parkinson's disease - The usefulness of amantadine hydrochloride in treatment of dyskinesias in Parkinson's disease

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000000780
Enrollment
60
Registered
2007-08-01
Start date
2007-06-01
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&#39

Interventions

An observation period (2 to 3 weeks) An administration of amantadine hydrochloride (27 days) A wash out period (15 days) An administration of placebo (27 days) An observation period (2 to 3 w

Sponsors

Comprehensive clinical study group concerning diagnosis, treatment, and prevention of the neurological disorders
Lead Sponsor
Musashi Hospital, National Center of Neurology and Psychiatry, Japan Ehime University Hospital
Collaborator

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Eligible patients are 20 to 75 years-old, diagnosed as Parkinson disease (according to steps 1 and 2 of U.K. Parkinson's disease Society brain bank diagnostic criteria), and with dyskinesias of the limbs and the trunk

Exclusion criteria

Exclusion criteria: 1) Patients prescribed with amantadine hydrochloride during the previous 2 weeks 2) Patients with psychiatric symptoms such as auditory hallucination or delusions 3) According to the following formula, creatinine clearance is less than 75mL/min/1.73m2 Male : (140-age)X weight(kg)/(72 X serum creatinine)(mg/dL) Female : (140-age)X weight(kg)X 0.85/(72 X serum creatinine)(mg/dL) 4) Remarkable liver damage 5) Pregnant or possibly pregnant 6) History of epilepsy 7) Patients who are judged as inappropriate participants in the trial

Design outcomes

Primary

MeasureTime frame
1) UPDRS (parts 3 and 4) and Goetz score (measurements after amantadine hydrochloride and after placebo administration) 2) Incidence of adverse events

Secondary

MeasureTime frame
1) Correlation between blood concentrations of amantadine hydrochloride and the UPDRS (parts 3 and 4) and Goetz score changes 2) UPDRS (parts 3 and 4) and Goetz score changes stratified by the types of dyskinesias

Countries

Japan

Contacts

Public ContactKyoko Tsunamoto / Kaho Ishibashi

Utano National Hospital, National Hospital Organization Clinical Research Institute

sawada@unh.hosp.go.jp075-461-5121

Outcome results

None listed

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