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CompletedNCT04182399Updated Feb 16, 2023

Role of Zonisamide in Advanced Parkinson's Disease (PD) in Egyptian Population: Pilot Study

An interventional study of Zonisamide Capsules in Parkinson Disease, sponsored by Ain Shams University. Completed at 2 sites in Egypt. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-02-16.

Sponsored by Ain Shams University · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
69
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Zonisamide (ZNS) (1,2-Benzisoxazole-3-methanesulfonamide) is an anti-epileptic drug. In three double blinded placebo controlled studies, ZNS- as an adjunctive treatment- showed beneficial effects on motor symptoms of PD with a low incidence of adverse events. As a result 25 mg daily of ZNS was approved in 2009 in Japan as an adjunctive treatment in PD patients whose condition responded insufficiently to Levodopa treatment.

Most observations of a beneficial effect of ZNS have been in Japanese people, and the antiparkinsonian mechanism of action is unclear. So, ZNS is a promising but still investigational drug to treat PD and more studies are warranted.

this study will investigate the efficacy and tolerability of Zonisamide as an adjunctive treatment in Egyptian patients with advanced PD, including motor fluctuations, levodopa induced dyskinesia and existing nonmotor symptoms. Additionally it investigates its effects on quality of life of PD patients.

Read the detailed description

Type of Study: Randomized double blinded Placebo controlled study.

  • Study Setting: Movement disorders clinic of neurology department, Ain Shams University Hospitals.
  • Study Period : 2 years.
  • Study Population: Patients with advanced PD and insufficient response to dopaminergic drugs .

Inclusion Criteria:

  • Age older than 18 years of both male and female genders.
  • Individuals diagnosed with PD based on the presence of 2 of 3 cardinal features \& United Kingdom bank criteria for idiopathic Parkinson's disease.
  • Patients with manifestations of advanced PD defined according to the consensus on the definition of advanced PD.
  • Inadequate response to dopaminergic medications due to limitations related to side effects, or levodopa related long-term problems as wearing-off phenomena, "on"-"off" fluctuation, levodopa induced dyskinesia and freezing phenomena, no-"on" and delayed-"on,".

Exclusion Criteria:

  1. Patients with atypical or secondary parkinsonian syndromes excluding PD.
  2. Patients who could not perform the tests.
  3. Women who were or might be pregnant, who did not practice effective contraception and were of childbearing potential, or who were breastfeeding.

Ethical Considerations:

All of the patients will be informed of the objectives, procedures and possible benefits and risks of the study and will provide written voluntary consent.

The study will conform to the standards of the Ethical Review Committee, Ain Shams University.

Study Procedures:

  • Patients diagnosed with PD will be evaluated for inclusion and exclusion criteria. Eligible patients will be randomly assigned to one of three groups: placebo group , ZNS group 25 mg and ZNS group 50 mg (30 patients each).In ZNS 50 mg group, ZNS will be started with a dose of 25 mg daily for one week then increased to 50 mg once daily to minimize side effects. The dosage and regimen of ongoing antiparkinsonian drugs and other drugs that may affect PD symptoms will remain unchanged one month before and through the treatment period.
02

Conditions studied

  • Parkinson Disease

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Keywords

  • Parkinson's disease, zonisamide, motor, fluctuation
03

In context

Parkinson Disease

4,487 studies on the registry are indexed under Parkinson Disease; 1,081 are open to participants now.

This study's enrollment of 69 is above the median of 40 across 3,293 interventional studies indexed under Parkinson Disease.

Browse Parkinson Disease studies →

Lead sponsor

Ain Shams University is the lead sponsor of 1,876 studies on the registry; 423 are open to participants now.

Of its 32 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

1 -Age older than 18 years of both male and female genders. 2-Individuals diagnosed with PD based on the presence of 2 of 3 cardinal features \& UK bank criteria for idiopathic Parkinson's disease. 3-Patients with motor complications of PD (Hoehn and Yahr stage 2-3)(on therapy) and at least 2 hours off time.

Exclusion criteria

Exclusion Criteria:

1 -Patients with atypical or secondary Parkinsonism syndromes excluding PD. 2-Patients who could not perform the tests. 3-Women who were or might be pregnant, who did not practice effective contraception and were of childbearing potential, or who were breastfeeding.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Triple (Participant, Investigator, Outcomes assessor)
Enrollment
69 participants (actual)

Study arms

  • Active comparator
    Patients 25 ZNS

    30 patients receive oral 25 mg ZNS daily

    Drug: Zonisamide Capsules

  • Active comparator
    Patients 50 ZNS

    30 patients receive oral 50 mg ZNS daily

    Drug: Zonisamide Capsules

  • Placebo comparator
    Patients Placebo

    30 patients receive placebo

    Drug: Zonisamide Capsules

Interventions

  • DrugZonisamide Capsules

    anti-epileptic drug that recently used as add on therapy of wearing off and fluctuation complications of dopaminergic drugs in PD patients

    Also known as: Convagran

06

What researchers measure

Primary outcomes

  1. Off motor daily time

    assessing change of Off and on time using Movement Disorders Society- Unified Parkinson's Disease Rating Scale (MDS UPDRS)

    Time frame: at 1 and 3 months

  2. levodopa related Dyskinesia

    Dyskinesia will also be evaluated with Movement Disorders Society- Unified Dyskinesia Rating Scale (MDS-UDysRS)

    Time frame: at 1 and 3 months

Secondary outcomes

  1. Quality of life (daily life activities)

    parkinson disease questionnaire-39

    Time frame: at 3 months

  2. cognitive outcome

    using Montreal cognitive assessment

    Time frame: at 3 months

  3. The non-motor symptoms scales

    using The non-motor symptoms scales (NMSS)

    Time frame: at 1 and 3 months

07

Study locations

2 sites
  • Department of Neurology, Ain Shams University Hospital
    Cairo, Abbasia 11575, Egypt
  • Ain Shams Univeristy
    Cairo, 11591, Egypt
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 16, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04182399
Lead sponsor
Ain Shams University
Responsible party
Ali Shalash (professor of Neurology, Ain Shams University) — Principal investigator
First posted
Dec 2, 2019
Start date
Apr 1, 2020
Primary completion
Dec 1, 2022
Completion
Jan 1, 2023
Last update
Feb 16, 2023

Study contacts

Ali Shalash, PhD
principal investigator · Department of Neurology, Faculty of Medicine, Ain Shams Univeristy

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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