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HeadachePhase 2NCT00261469

An Open-label Study to Evaluate Topiramate Therapy in Migraine Patients, and Its Effects on Subject Responsiveness to Migraine Treatment With Triptans

A Phase 2 study testing topiramate in people with Headache, run by Janssen-Ortho Inc., Canada.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to evaluate whether prophylactic use of topiramate (preventative use before a migraine attack) enhances the effectiveness of migraine treatment with triptans. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Headache
What is being tested?
topiramate
How many people
38 participants
Where
No sites listed yet
Study dates
Apr 2003to Nov 2004
Phase
Phase 2
Are there results?
None posted in the registry

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 18 to 65 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Subjects must have an established history consistent with migraine, with or without aura, confirming to International Headache Society (HIS) criteria for at least 6 months prior to study entry
  • must be using a stable dose of triptan for migraine treatment for at least 3 migraine attacks per month
  • must have failed <=2 previous prophylactic medications due to lack of effectiveness
  • must have had between 3 and 12 migraine periods and no more than 18 headache days (migraine and non-migraine) during the 6-week Prospective Baseline Period. (A headache day is defined as a calendar day which the subject experienced headache pain for at least 4 hours untreated, or 30 minutes duration treated)
  • female subjects who are postmenopausal, surgically incapable of bearing children, or practicing an acceptable method of birth control, and must have a negative pregnancy test at Visit 1.

Who cannot join

  • Subjects with headaches other than migraine with and/or without aura
  • onset of migraine after age 50
  • overuse analgesics or specific medications for treatment of migraine attacks
  • currently on a prophylactic medication for migraine
  • history of an unstable medical condition within the past 2 years, malignancy within the past 5 years, major psychiatric disorder within the past 6 months, suicidal ideations or suicide attempt within the past 2 years or history of alcohol or drug abuse within the past 6 months

About this study

Official title: Efficacy of Topiramate Prophylaxis as add-on to Triptan Therapy for Migraine

The purpose of this study is to evaluate whether prophylactic use of topiramate (preventative use before a migraine attack) enhances the effectiveness of migraine treatment with triptans.

Read the detailed description

The objective of this pilot study is to determine if patients with migraine are more responsive to triptans taken for symptomatic headache treatment while on topiramate prophylactic therapy as compared to a baseline period without prophylaxis. The trial is an open-label design, with migraine patients receiving topiramate prophylactically twice a day (maximum of 200 mg/day) for 16 weeks, following a 6-week Prospective Baseline Period.

During the first week of the treatment phase, subjects will begin on a once-daily dose of 25 mg of topiramate at night, and remain on that dose for two weeks. Thereafter, the daily dose will be increased by 25 mg, with twice-daily dosing. If in the investigator's judgement further dosage increases beyond 100 mg/day are indicated, the daily dose will be increased weekly by 25 mg to a daily dose of 150 mg. The daily dose may be increased to a maximum daily dose of 200 mg, if the subject is tolerating the higher doses.

Subjects keep a headache diary in which the following information is recorded: time of onset of headache and indication of type of headache; time headache stops; any symptomatic treatment taken, time that tiptan medication is taken; headache intensity at the time the triptan is taken, 30 minutes, one hour, and two hours post dose; and the presence of nausea at the time the triptan is taken, 30 minutes, on hour, and 2 hours post dose. The primary measure of triptan responsiveness is the proportion of triptan treated migraine attacks that were pain-free at two hours after triptan treatment.

Safety evaluations during the study include the collection of adverse events, laboratory assessments including hematology, chemistry and urinalysis, and vital signs (blood pressure and pulse). The hypothesis is that topiramate prophylaxis will increase the responsiveness of migraine attacks to triptan therapy as measured by the proportion of attacks that are pain-free two hours after triptan therapy. Subjects will begin week 1 of the Topiramate Treatment phase with 25 mg topiramate at night. Thereafter, the dose of topiramate will be increased by 25 mg every second week i.e. week 3 = 50 mg, week 5 =75 mg, week 7 = 100 mg. If, in the investigator's judgment, further dosage increases are indicated, the dose can be increased as follows: week 9 = 125 mg, week 10 = 150 mg, week 11 = 175 mg, week 12 = 200 mgs.The dose may be increased weekly after week 10 if the patient is tolerating the higher.

Conditions
Headache
Being tested
topiramate
Keywords
Migraine, Headache
Medical subject headings
Headache, Migraine Disorders

What participants receive

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

  • topiramateDrug

What is being measured

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

  1. The proportion of migraine attacks that are pain-free two hours after triptan treatment, compared to baseline.

Secondary outcomes (1)
  1. Pain relief at two hours after triptan treatment, compared to baseline; the proportion of migraine attacks that are pain-free 1 hour after triptan treatment, compared to baseline; adverse events

Timeline

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

  1. First posted5 Dec 2005 (estimated)
  2. Study startApr 2003
  3. Study completionNov 2004

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 2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
38 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00261469
Sponsor's protocol ID
CR005686
Status last verified
Jan 2011
First submitted
2 Dec 2005
Last updated
17 May 2011
Results posted
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing topiramate in people with Headache, run by Janssen-Ortho Inc., Canada.

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 5 inclusion and 5 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: finished, as of the sponsor's last update on 17 May 2011. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

The proportion of migraine attacks that are pain-free two hours after triptan treatment, compared to baseline.. 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 17 May 2011.

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