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EpilepsyPhase 3NCT00693017

Efficacy and Safety of Adjunctive Zonisamide in Myoclonic Seizures Associated With Idiopathic Generalised Epilepsy

A Phase 3 study testing Zonisamide in people with Epilepsy, run by Eisai Limited at 72 sites in 13 countries.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

This study is intended to provide evidence that zonisamide is safe and effective in the treatment of myoclonic seizures. The total planned trial duration will be 6.5 months. After that, subjects who have completed the study will be eligible to enroll in an open-label extension study until zonisamide is marketed for… Read more about this study

Who is it for?
Ages 12 to 65 years
Conditions the study is for
Epilepsy
What is being tested?
Zonisamide
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
10 participants
Where
72 sitesin 13 countries
Study dates
Jun 2008to Nov 2008
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 12 to 65 years
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Subject is male or female and aged 12-65 years.
  • Subject has at least eight days with at least one myoclonic seizure over the two months Baseline Period. Myoclonic seizures must occur in the context of IGE and may be accompanied by other primary generalized seizures, provided these are also consistent with a diagnosis of Idiopathic Generalized Epilepsy (IGE).
  • Subject (or parent/caregiver, for subjects below the age of consent) is willing to sign an informed consent form. Subjects below the age of consent in their country, must where appropriate be willing to give informed (written or verbal) assent. Subjects from the age specified in local regulations will be required to sign an appropriate informed consent form.
  • Subject is taking a stable regimen of one or two other AEDs for at least two weeks prior to Visit 1 (start of the Baseline Period).
  • Subject has a clinical diagnosis of any type of idiopathic generalised epilepsy (IGE) which has myoclonic seizures (and which may be accompanied by other generalised seizure types), according to the International League Against Epilepsy (ILAE) Classification of Epileptic Seizures (1981) and the ILAE Classification of Epilepsies and Epileptic Syndromes (1989). Diagnosis should have been established by clinical history, electroencephalogram (EEG) and computed tomography/magnetic resonance imaging (CT/MRI) of the brain consistent with idiopathic generalised epilepsy. A CT/MRI scan should have been performed within five years of the screening visit or, if not available from this period, should be performed in the Baseline Period.
  • EEG should have been performed within one year of the screening visit or, if not available from this period, should be performed in the Baseline Period.
  • Female subjects are pre-menarchal, or if of childbearing potential, are not pregnant or lactating, or are post-menopausal.
  • Female subjects of childbearing potential ≥ 18 years must abide by one of the following medically acceptable contraceptive measures: oral contraception pill, contraceptive injections, implants or patches, intrauterine device in place for at least three months or vasectomised partner or abstinence throughout the study. Subjects <18 years and of childbearing potential must be either abstinent or willing to use one of the medically appropriate forms of contraception for the duration of the study.

Who cannot join

  • Subject has progressive or focal neurological disease (as determined by preexisting brain imaging such as CT or MRI performed maximally five years before the screening visit), or clinically significant organic disease.
  • Subject has a history of, or results of clinical investigations (including EEG data) that are suggestive of, partial seizures as defined by the ILAE, including generalised tonic clonic seizures which are suspected to be secondarily generalised.
  • Subjects with cryptogenic or symptomatic generalised epilepsy.
  • Subjects with psychogenic seizures.
  • Subject has a history of convulsive status epilepticus within a year of screening while complying with AEDs.
  • Subject has a history of renal calculi or renal insufficiency (above the upper normal limits of creatinine).
Show all 22Show fewer
  • Subject has a known diagnosis of human immunodeficiency virus (HIV) or hepatitis B or C.
  • Subject has a predisposing condition that might interfere with absorption, distribution, or excretion of zonisamide.
  • Subject has a history of sensitivity to sulfonamide drugs or to zonisamide or any of its excipients.
  • Subject has a recent history of excessive alcohol use or drug abuse.
  • Subject has a history of suicide attempt in the five years before the screening visit.
  • Subject has abnormal screening laboratory values that are clinically significant.
  • Subject has a history of demonstrated non-compliance with treatment, or the subject or parent/caregiver can be reasonably expected not to be compliant with study procedures or to complete the study.
  • Subject has participated in a study of an investigational drug or device within 30 days prior to screening.
  • Subject has received previous treatment with zonisamide.
  • Subject is treated with ketogenic diet or vagus nerve stimulator.
  • Subject has a history of necessary treatment with rescue benzodiazepines which is foreseen to continue during the study. Rescue benzodiazepines will not be allowed in this study (stable dosing with a benzodiazepine as (one of the) baseline anti-epileptic drug(s) is allowed).
  • Concomitant use of acetazolamide, carbonic anhydrase inhibitors such as topiramate and drugs with anticholinergic activity.
  • Current psychosis or moderate to severe depression, or use of anti-psychotic drugs, MAOIs, tricyclic antidepressants, benzodiazepine or barbiturate treatment for disorders other than epilepsy, and stimulants (amphetamine derivatives) within 28 days before the screening visit.
  • Concomitant use of felbamate or use of felbamate within two months prior to Visit 1.
  • Subject is unable to swallow capsules.
  • Subject is not in general good health as determined by medical history, physical exam and screening laboratory results.

Trial locations and contacts

72 sites in 13 countries.

72 sites in 13 countries

Russia12 sites
  • GOU VPO Krasnoyarskaya State Medical Academy of Roszdrav

    Krasnoyarsk, 660022

  • FGU Moscow Research Institute of Psychiatry of Roszdrav

    Moscow, 107076

  • GOU VPO Russian State Medical University of Roszdrav

    Moscow, 117997

  • GUZ of Moscow City Clinical Hospital #1 n.a. N.I.Pirogov

    Moscow, 119049

  • GOU VPO Moscow State University of Medicine and Dentistry of Roszdra

    Moscow, 127473

  • GOU VPO Novosibirsk State Medical University of Roszdrav

    Novosibirsk, 630091

  • GU St. Petersburg Research Institute of Psychoneurology Bekhtereva of Roszdrav

    Saint Petersburg, 192019

  • St. Petersburg State Medical Pediatric Academy

    Saint Petersburg, 194100

  • GOU VPO St. Petersburg State Medical University

    Saint Petersburg, 197022

  • GOU VPO Smolensk State Medical Academy of Roszdrav

    Smolensk, 214018

  • GOU VPO Smolensk State Medical Academy of Roszdrav

    Smolensk, 214019

  • Yaroslavskaya State Medical Academy

    Yaroslavl, 150000

Other trials in Russia

Hungary9 sites
  • National Institute of Psychiatry and Neurology

    Budapest, 1021

  • Heim Pal Hospital

    Budapest, 1089

  • Szent Istvan Hospital

    Budapest, 1091

  • Orszagos Idegsebeszeti Tudomanyos Intezet

    Budapest, 1145

  • Bethesda Hospital for Children

    Budapest, 1146

  • Bekes County Pandy Kalman Hospital

    Gyula, 5703

  • Bacs-Kiskun County ONK Hospital

    Kecskemét, 6000

  • Vas County Markusovszky Hospital

    Szombathely, 9400

  • Veszprem County Csolnoky F. Hospital

    Veszprém, 8200

Other trials in Hungary

Czechia7 sites
  • Neurologicke oddeleni

    Kralove, 500 03

  • Private Neurologi Office

    Kroměříž, 767 01

  • Fakultni nemocnice Olomouc

    Olomouc, 775 20

  • Fakultni nemocnice s poliklinikou Ostrava

    Ostrava, 708 52

  • Fakultni nemocnice Plzen

    Pilsen, 305 99

  • Nemocnice Na Homolce

    Prague, 150 30

  • Centrum neurologicke pece

    Rychnov nad Kněžnou, 516 01

Other trials in Czechia

Romania7 sites
  • Centrul Medical Sana

    Bucharest, 011025

  • Spitalul Clinic de Psihiatrie "Prof. Dr. Alexandru Obregia"

    Bucharest, 041914

  • Spitalul Universitar de Urgenta Bucuresti

    Bucharest, 050098

  • Spitalul Clinic Judetean de Urgenta Cluj

    Cluj-Napoca, 400006

  • Spitalul Clinic Judetean de Urgenta "Sf Spiridon" Iasi

    Lasi, 700111

  • Spitalul Clinic de Urgenta "Sfanta Treime"

    Lasi, 700309

  • Spitalul Clinic Judetean de Urgenta Tg Mures

    Tg Mures, 540136

Other trials in Romania

Ukraine7 sites
  • Tsentr Psihosomatychnoyi Patologiyi Dnipropetrovskoyi oblasnoyi klinichnoyi likarni imeni Mechnikova

    Dnipropetrovsk, 49005

  • Derzhavna Ustanova Institut Nevrologiy

    Kharkiv, 61068

  • Kyiv City Psychiatric Hospital #2, Poliklinichne Viddilenya

    Kyiv, 2660

  • Miska Klinichna psihonevrologichna

    Kyiv, 3080

  • Lvivskyiy oblasnyi Protyepileptuchnyy tsentr

    Lviv, 7910

  • Odesskyy Derzhavnyy Medychnyy Universitet

    Odesa, 65006

  • Vinnitskyy Natsionalnyy Medychnyy Universitet

    Vinnitsa, 21005

Other trials in Ukraine

Poland6 sites
  • Niepubliczny ZOZ Kendron

    Bialystok, 15-420

  • Wojewozki Szpital Specjalistyczny im. M. Kopernika

    Gdansk, 80-803

  • Specjalistyczny Szpital Wieloprofilowy

    Katowice, 40-635

  • Centrum Neurologii Klinicznej

    Krakow, 31-530

  • Szpital im. M. Kopernika

    Lodz, 93-513

  • Uniwersytet Medyczny

    Poznan, 60-355

Other trials in Poland

Germany5 sites
  • Institut fur Diagnostik der Epilepsien (IDE) gGmbH Epilepsie-Zentrum Berlin- Brandenburg.

    Berlin, 10365

  • Neurochirurgische Klinik der Universitat Freiburg

    Freiburg im Breisgau, 79106

  • Interdisziplinares Epilepsiezentrum am Klinikum der Philipps-Universitat Marburg

    Marburg, 35039

  • Neurologische Gemeinschaftspraxis

    München, 80333

  • Universitatsklinikum Ulm

    Ulm, 89081

Other trials in Germany

Australia4 sites
  • Strategic Health Evaluators Pty Ltd

    Chatswood, New South Wales, 2067

  • Austin Health

    Heidelburg, Victoria, 3084

  • The Royal Melbourne Hospital

    Melbourne, Victoria, 3050

  • The Prince of Wales Hospital

    Randwick, New South Wales, 2031

Other trials in Australia

Serbia4 sites
  • Clinical Center of Serbia

    Belgrade, 11000

  • University Medical Center Zvezdara

    Belgrade, 11000

  • Clinical center Kragujevac

    Kragujevac, 34000

  • Clinical Center of NIS

    Niš, 18000

Other trials in Serbia

Croatia3 sites
  • CH Split

    Split, HR, 10000

  • CH Sestre Milosrdnice University Hospita

    Zagreb, HR, 10000

  • UHC Zagreb

    Zagreb, HR, 10000

Other trials in Croatia

Estonia3 sites
  • West-Tallinn Central Hospital

    Tallinn, 10611

  • Neurodiagnostica AP OY

    Tallinn, 11312

  • Tartu University Hospital

    Tartu, 51014

Other trials in Estonia

Lithuania3 sites
  • Kaunas Medical University Hospital

    Kaunas, 50009

  • Neuromeda

    Kaunas, 50185

  • Vilnius University Hospital Santariskiu klinikos

    Vilnius, 8861

Other trials in Lithuania

Finland2 sites
  • Kuopio Epilepsy Center

    Kuopio, SF-70211

  • Oulu University Central Hospital

    Oulu, 90220

Other trials in Finland

About this study

Official title: A Double-blind, Randomised, Placebo-controlled, Multi-centre Study to Assess the Efficacy and Safety of Adjunctive Zonisamide in Myoclonic Seizures Associated With Idiopathic Generalised Epilepsy

This study is intended to provide evidence that zonisamide is safe and effective in the treatment of myoclonic seizures. The total planned trial duration will be 6.5 months. After that, subjects who have completed the study will be eligible to enroll in an open-label extension study until zonisamide is marketed for this indication or further development in this indication stops. This extension study will be described in a separate protocol (E2090-E044-318).

Conditions
Epilepsy
Being tested
Zonisamide, Placebo
Medical subject headings
Epilepsy

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ZonisamideDrug

    Also called Zonegran

    50-400 mg capsules once daily in the evening orally.

    Maximum study duration 28 weeks comprising:

    Baseline Period (Week -8 to Week 0): no treatment

    Titration Period (Week 0 to Week 4): 50 mg daily titrated weekly until 300 mg was reached by Week 4

    Maintenance Period (Week 4 to Week 16) 400 mg (or 350 mg in the event of dose limiting adverse events)

    Down Titration Period (4 Weeks)

  • PlaceboDrug

    50-400 mg Zonisamide Placebo capsules once daily in the evening orally.

    Maximum study duration 28 weeks comprising:

    Baseline Period (Week -8 to Week 0): no treatment

    Titration Period (Week 0 to Week 4): 50 mg Zonisamide Placebo daily titrated weekly until 300 mg was reached by Week 4

    Maintenance Period (Week 4 to Week 16) 400 mg Zonisamide Placebo (or 350 mg in the event of dose limiting adverse events)

    Down Titration Period (4 Weeks)

Study groups in NCT00693017
Study groupRoleWhat they receive
ZonisamideActive comparatorNot described
Receives: Drug: Zonisamide
PlaceboPlacebo comparatorNot described
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants Considered Responders as Assessed During the Maintenance Period

    The number of participants who were considered responders during the 12 week Maintenance Period (Week 4 to Week 16). A responder was defined as a participant with a decrease >= 50% from baseline in the number of days with myoclonic seizures per 28 days (i.e. 28-day myoclonic seizure frequency in Period from Week 4 to the Week 16 visit compared to Week -8 to randomization at Week 0 [Screening/ Baseline Period]). Occurrence of seizures was documented in a seizure diary. The diary was dispensed at the Screening Visit and maintained by the participant (parent/caregiver) and reviewed at each following visit. The diary was completed daily. All seizures except myoclonic seizures were counted individually in the the diary. Due to early termination of the study by the Sponsor, no formal analyses were conducted.

    Measured: Baseline (Week -8 to Week 0) and Maintenance Period (Week 4 to Week 16)

Secondary outcomes (1)
  1. Percentage Change From Baseline in the Monthly Number of Days With Myoclonic Seizures

    Percentage Change from Baseline in the monthly number of days with myoclonic seizures was assessed both for the Maintenance Period alone (Week 4 to Week 16) and for the entire double-blind treatment period (Week 0 to Week 16). Due to early termination of the study by the Sponsor, no formal analyses were conducted.

    Measured: Baseline and up to 16 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted6 Jun 2008 (estimated)
  2. Study startJun 2008
  3. Primary completionNov 2008

Why it stopped: Sponsor's decision

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
10 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00693017
Sponsor's protocol ID
E2090-E044-317
Other IDs
2007-003556-10
Status last verified
Nov 2015
First submitted
3 Jun 2008
Last updated
24 Dec 2015

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Zonisamide in people with Epilepsy, run by Eisai Limited at 72 sites in 13 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 22 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 24 Dec 2015. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 72 sites in Russia, Hungary, Czechia, Romania, Ukraine and 8 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 12 Sep 2012). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants Considered Responders as Assessed During the Maintenance Period (time frame: Baseline (Week -8 to Week 0) and Maintenance Period (Week 4 to Week 16)). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Dec 2015.

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