Clinical trial NCT00055484: A Study to Measure the Safety and Effectiveness of Zonisamide in Subjects With Migraine Headache
Official title: A Double-Blind, Randomized, Multicenter, Parallel Dose Study to Evaluate the Safety and Efficacy of Zonisamide 150 mg and 300 mg Per Day and Placebo in Subjects With Migraine Headache
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Migraine Headache
Keywords: Migraine Headache
prophylaxis
AED
migraine prophylaxis
Lead sponsor: Elan Pharmaceuticals
Sponsor class: INDUSTRY
First posted: 2003-03-05
Enrollment: 204
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The purpose of this study is to determine if zonisamide is effective as a preventative medication for individuals with migraine headache.

Detailed description: The pharmacologic treatment of migraine may be acute (abortive, symptomatic) or preventive (prophylactic). Preventive medication is usually given daily for months or years; however, treatment may also be given in an intermittent regimen. Most migraine prophylactic medications were designed to treat other disorders, and they can be divided into three groups:

1. Serotonergic or monoaminergic agents such as methysergide, which have demonstrated high degrees of effectiveness;
2. Non-serotonergic drugs such as beta-blockers, tricyclic antidepressants, valproate; and
3. Drugs with lesser demonstrated effectiveness, such as selective serotonin reuptake inhibitors, calcium channel antagonists, and non-steroidal anti-inflammatory drugs.

The choice of treatment must be individualized, and is influenced by contraindications, potential side effects, the need to treat associated symptoms like tension-type headache and insomnia, and drug cost.

Anticonvulsants, such as valproate, have shown significant degrees of efficacy in migraine prophylaxis when used in low doses. Considering the differences in proposed mechanisms of action of these agents, it is likely that a novel anticonvulsant such as zonisamide may also be an effective prophylactic treatment for migraine.

Eligibility criteria: INCLUSION:

Subjects who meet all the following criteria will be eligible to participate in the study:

* Are men or women, between the ages of 18 and 65, inclusive.
* Satisfy diagnostic criteria for migraine headache, consistent with criteria described in Headache Classification Criteria.
* Have at least 4 migraine attacks per 28 days \[each attack separated by at least 48 hours\] prior to the Screening Visit and experience at least 4 migraine attacks during the Screen/Baseline Phase.
* Agree to not become pregnant during the study and agree to use an adequate method of birth control during the study such as an adequate barrier method, hormonal contraceptive, or surgical sterilization. All women of childbearing potential must have a negative pregnancy test before entering the study and during the study.
* Are able to swallow the capsules whole.
* Are willing and able to follow Investigator instructions and study procedures, complete the daily diary, and report adverse events.

EXCLUSION:

Subjects meeting any of the following criteria will not be eligible to participate in this study:

* Have required more than 3 different rescue medications for control of a single attack anytime within 3 months prior to the Screening Visit.
* Have cluster headache or chronic tension type headache and are unable to distinguish between their different types of headache.
* Have basilar or hemiplegic migraine.
* Have used triptans more than 3 times per week within 3 months prior to the Screening Visit.
* Have received botulinum toxin injection(s) within 3 months prior to the Screening Visit.
* Have taken any other prophylactic medications for migraine within 5 half-lives prior to the Baseline Visit.
* Are pregnant or lactating.
* Have a history or current diagnosis of psychiatric disorder likely to require pharmacological intervention (e.g., antidepressants, MAO inhibitors, antipsychotics, mood-stabilizers, anxiolytics) during the study.
* Have clinically unstable cardiovascular, hepatic, renal, gastrointestinal, pulmonary, metabolic, endocrine or other systemic disease.
* Have laboratory test results that, in the opinion of the Investigator, are clinically significant abnormalities.
* Require treatment with any medication (e.g., daily opioids, daily beta-blockers, daily non-steroidal anti-inflammatory drugs, carbonic anhydrase inhibitors, eletriptan) or herbal supplements (e.g., St. John's Wort, ginseng, ginkgo biloba, kava kava, melatonin, petadolex) that might interact adversely with, or obscure, the action of the study medication.
* Have received psychoactive medication (e.g., other anticonvulsant drugs, antidepressants, antipsychotics, anxiolytics, mood stabilizers) within 5 half-lives prior to the Baseline Visit.
* Have previously enrolled in this study or previously treated with zonisamide.
* Have previously failed an adequate trial of another antiepilepsy drug for the treatment of migraine.
* Have a history of allergy or hypersensitivity to zonisamide or other sulfonamides.
* Have a history of skin rash, without other diagnosis, associated with any medication or any medical condition.
* Have a history of nephrolithiasis.
* Have received an experimental drug or used an experimental device within 30 days of the Screening Visit.
* Have a history of drug or alcohol abuse within 12 months prior to the Screening Visit.

Primary outcomes:
Secondary outcomes:
Other outcomes:
Locations:
city: Huntsville
country: United States
facility: Medical Affiliated Research Center
state: Alabama
city: Mobile
country: United States
facility: University of South Alabama Medical Ctr Department of Neurology
state: Alabama
city: Phoenix
country: United States
facility: Valley Neurological Headache Clinic
state: Arizona
city: Stamford
country: United States
facility: The New England Center for Headache
state: Connecticut
city: Overland Park
country: United States
facility: Radiant Research
state: Kansas
city: Ann Arbor
country: United States
facility: Michigan Head-Pain & Neurological Institute
state: Michigan
city: Chesterfield
country: United States
facility: Mercy Health Research
state: Missouri
city: Springfield
country: United States
facility: Headache Care Center
state: Missouri
city: Tulsa
country: United States
facility: Neurological Associates of Tulsa
state: Oklahoma
city: Philadelphia
country: United States
facility: Thomas Jefferson University Hospital
state: Pennsylvania
city: Austin
country: United States
facility: MetaClin Research
state: Texas
city: Houston
country: United States
facility: Houston Headache Clinic
state: Texas
city: Salt Lake City
country: United States
facility: Radiant Research
state: Utah
Study officials:
References: