Clinical trial NCT00056576: Dose Response Study of Zonegran in Patients With Newly Diagnosed Epilepsy
Official title: A Double-Blind, Randomized, Multicenter, Parallel Group Study to Establish Dose-Response, Safety, and Efficacy of Zonegran (Zonisamide) as Monotherapy in Patients With Newly Diagnosed Epilepsy
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE3
Conditions: Epilepsy, Complex Partial
Keywords: Monotherapy
Complex Partial Seizures
Epilepsy
anti-epilepsy drug
AED
Lead sponsor: Eisai Inc.
Sponsor class: INDUSTRY
First posted: 2003-03-19
Enrollment: 165
Sex: ALL
Minimum age (years): 16
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: The purpose of this study is to determine whether zonisamide alone is effective as a treatment for epilepsy in newly diagnosed cases.

Detailed description: Epilepsy is characterized by repeated seizures caused by recurrent, abnormal, and excessive synchronous discharges from cerebral neurons. Seizures may be triggered by various causes such as CNS infections, fever, tumors, toxins, vascular disease, degenerative disease, trauma, or may be idiopathic. The type of seizure is usually defined by the initial event, the duration, alterations of consciousness, patterns of motor activity, and post-ictal symptoms. In addition, certain seizure types have characteristic EEG patterns. The International Classification of Epileptic Seizures classifies seizures as partial or generalized. Partial seizures are further classified as simple partial, complex partial (impaired consciousness), or partial seizures secondarily generalized. All partial seizures have onset in a discrete cortical region. Generalized seizures are bilaterally symmetrical and without focal onset and include absence seizures, myoclonic seizures, clonic seizures, tonic seizures, tonic-clonic seizures, and atonic seizures. The goals of treatment include the prevention of seizures, medical management of seizures, and management of the consequences of epilepsy. The study will be conducted with patients who have new onset epilepsy characterized by complex partial seizures and will attempt to characterize the relationship between zonisamide dose and seizure prevention and demonstrate monotherapy efficacy.

Eligibility criteria: INCLUSION CRITERIA

* Patient able and willing to give written informed consent or assent as appropriate in accordance with ICH and GCP guidelines
* Patient with newly diagnosed epilepsy who has complex partial seizures (with or without secondary generalization)
* Patient must have at least two well-documented, unprovoked, clinically evaluated and classified complex partial seizures or one well-documented, unprovoked, clinically evaluated and classified complex partial seizure and an abnormal EEG consistent with the diagnosis of epilepsy occurring within one year prior to enrollment
* Patient must have received less than 2 weeks of prior AED therapy, which will be discontinued at study entry
* EEG changes consistent with the diagnosis of epilepsy:

  * For patients with two well-documented, unprovoked complex partial seizures within one year prior to enrollment, the EEG results may be normal at the time of testing but, in the opinion of the Investigator, the patient has epilepsy
  * For patients with one well-documented, unprovoked complex partial seizure within one year prior to enrollment, the EEG must be abnormal at the time of testing consistent with the diagnosis of epilepsy
* Patient age 16 years or greater
* In the opinion of the Investigator, the patient is in good health
* Female patients of child-bearing potential must not be pregnant (serum HCG negative) or lactating, and must be using a medically acceptable form of birth control such as abstinence, an adequate barrier method, or hormonal contraceptive; or female patients who are post-menopausal or have had surgical sterilization
* Patient or caregiver able to follow Investigator instruction, study procedures, maintain diary of concomitant medication use, and report adverse events

EXCLUSION CRITERIA

* History of status epilepticus
* Patient with simple partial seizures only
* A history of non-epileptic seizures (e.g. metabolic or pseudo-seizures)
* Progressive encephalopathy or findings consistent with progressive CNS disease or lesions (e.g. infection, demyelination, tumor)
* Clinically significant uncontrolled medical disease in the previous two years (including unstable cardiac, hematological, hepatic, or renal disease)
* History of acute intermittent porphyria, glucose-6-phosphate dehydrogenase deficiency or hemolytic anemia
* Renal insufficiency (serum creatinine \> 2 mg/dL) or impaired liver function (SGPT/ALT \> two times upper limit of normal)
* History of renal calculi
* Laboratory test results which, in the opinion of the Investigator, are clinically significant abnormalities
* History of alcohol or drug abuse
* Psychiatric illness or mood disorders requiring treatment in previous 6 months; history of suicide attempt or psychosis
* Use of benzodiazepines (intermittent use as a hypnotic or an PRN AED is allowed)
* Use of other investigational compounds, experimental drugs or devices within 30 days of the screening visit
* History of hypersensitivity or allergic reaction to sulfonamides
* Medical disorder, surgery or medication that might interfere with absorption, distribution, metabolism, or excretion of the study drug

Primary outcomes:
Secondary outcomes:
Other outcomes:
Locations:
city: Birmingham
country: United States
facility: UAB Epilepsy Center
state: Alabama
city: Huntsville
country: United States
facility: North Alabama Neuroscience
state: Alabama
city: Northport
country: United States
facility: Neurology Clinic, P.C.
state: Alabama
city: Northridge
country: United States
facility: Northridge Neurological Center
state: California
city: San Diego
country: United States
facility: Coordinated Clinical Research
state: California
city: Maitland
country: United States
facility: Neurology Associates
state: Florida
city: Panama City
country: United States
facility: Bay Neurological Institute
state: Florida
city: St. Petersburg
country: United States
facility: Suncoast Neuroscience Associates, Inc.
state: Florida
city: Tallahassee
country: United States
facility: AMO Corporation
state: Florida
city: Tampa
country: United States
facility: Florida Epilepsy & Seizure Disorder Center, PA
state: Florida
city: Decatur
country: United States
facility: Neurology & Headache Specialist of Atlanta, LLC
state: Georgia
city: Springfield
country: United States
facility: Southern Illinois University School of Medicine Dept. of Neurology
state: Illinois
city: Louisville
country: United States
facility: Louisville Neuroscience Research Center
state: Kentucky
city: Baltimore
country: United States
facility: St. Agnes Health Care, Inc.
state: Maryland
city: Chesterfield
country: United States
facility: The Comprehensive Epilepsy Care Center
state: Missouri
city: Albany
country: United States
facility: Upstate Clinical Research Center
state: New York
city: Orchard Park
country: United States
facility: Dent Neurological Institute
state: New York
city: Winston-Salem
country: United States
facility: Epilepsy Institute of North Carolina
state: North Carolina
city: Cincinnati
country: United States
facility: River Hills Health Care
state: Ohio
city: Greensburg
country: United States
facility: Westmoreland Neurology Associates, Inc.
state: Pennsylvania
city: East Providence
country: United States
facility: CNS Research, INC
state: Rhode Island
city: San Antonio
country: United States
facility: Neurology Clinic of San Antonio
state: Texas
city: Roanoke
country: United States
facility: Blue Ridge Research Center
state: Virginia
city: Tacoma
country: United States
facility: Neurology & Neurosurgery Associates of Tacoma, Inc. P.S.
state: Washington
city: Madison
country: United States
facility: University of Wisconsin
state: Wisconsin
city: Tallinn
country: Estonia
facility: Tallinn Children's Hospital
city: Tartu
country: Estonia
facility: Tartu University Hospital
city: Budapest
country: Hungary
facility: Semmelweis University Health Science Faculty
city: Budapest
country: Hungary
facility: National Institute of Neurosurgery Epilepsy Center
city: Kaunas
country: Lithuania
facility: Kaunas Medical University Clinics
city: Vilnius
country: Lithuania
facility: Vilnius University Hospital
city: Kharkov
country: Ukraine
facility: Kharkov State Medical University
city: Kharkov
country: Ukraine
facility: Institute of Neurology, Psychiatry, and Narcology of AMS Ukraine
city: Kiev
country: Ukraine
facility: Epilepsy Center
city: Odessa
country: Ukraine
facility: Odessa Medical University
Study officials:
References: