Dose Ranging Study of the Efficacy and Tolerability of Tonabersat in the Prophylaxis of Migraine Headache (TEMPUS)

March 30, 2009 updated by: Minster Research Ltd

Multi-Centre, Parallel Group, Double-Blind, Placebo Controlled, Dose Ranging Study of the Efficacy and Tolerability of Tonabersat in the Prophylaxis of Migraine Headache and Open Label Extension

Primary objective:

To investigate the efficacy and tolerability of two doses of tonabersat compared to placebo in the prophylaxis of migraine headache and to evaluate the longer term tolerability of tonabersat in an open label extension.

Secondary objective(s):

To obtain further data on the efficacy and dose response of tonabersat; To extend the safety and tolerability database of tonabersat; To obtain data on the pharmacokinetics of tonabersat.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

A multi-centre, double-blind, placebo controlled, randomized, parallel group, dose ranging study to investigate the efficacy and tolerability of two different target doses of tonabersat and placebo in the prophylaxis of migraine. Following initial screening patients will enter a 4 week baseline assessment period, prior to randomization to one of three treatment groups. Subsequently patients will be allocated, according to the predetermined randomization schedule, to treatment with placebo or a target dose of tonabersat 40 mg/day or 80 mg/day in a 20 week treatment period. A dose titration regimen will be employed over a period of 4 weeks and treatment will then be maintained for a further 16 weeks. During the baseline assessment period and the treatment period patients will maintain a daily record (diary data) of the occurrence of migraine headache, the severity of an attack, the presence/absence of a preceding aura, other symptoms associated with the migraine and details of the use of rescue medication (patients will be permitted to use their usual symptomatic/acute treatment as rescue medication throughout the trial). Patients will attend the clinic for assessment and collection of blood and urine samples for laboratory analysis, and a sub-population of patients will participate in a pharmacokinetic study. A total of 7 visits are planned during the randomized double-blind treatment period.

On completion of the randomized double-blind treatment period all patients will be offered the opportunity to enter an open label extension study where all patients receive tonabersat. A dose titration regimen will be employed over a period of 1 month and the final assigned dose of tonabersat (40, 60 or 80 mg/day) will be continued for the next 12 months. During the open label extension patients will attend the clinic for regular assessment of migraine status and safety. A total of 5 visits are planned.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
542

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • A signed and dated written informed consent is obtained prior to participation.
  • Male or female patients between 18-65 years of age who are ambulatory and able to travel to the clinic; women of childbearing potential must be using a reliable form of contraception (contraceptive pill or double-barrier contraception - partner using condom and patient using spermicide, diaphragm, intra-uterine device or contraceptive sponge) for at least 2 months prior to enrolment and have a negative pregnancy test at screening. Women of childbearing potential must continue to practice birth control during and for at least two months after the study
  • Patients with an established history of migraine of at least 1 year with or without aura meeting the diagnostic criteria of the International Classification of Headache Disorders - Edition 2.
  • Patients should have experienced an average of at least 4 migraine attacks per month over the 3 months prior to entering the trial and at least 3 migraine attacks during the baseline period. Patients should report a maximum of 12 migraine headache days during the baseline period.

Exclusion Criteria:

  • Patients with an onset of migraine according to the above criteria at age 50 years or more.
  • Patients who experience > 12 headache days during the baseline period.
  • Patients who have failed to respond to adequate trials of 3 or more preventive medications.
  • Overuse of acute migraine treatments defined as ≥ 15 medication days per month of which no more than 9 days includes ergots or triptans.
  • Any woman who is pregnant, lactating or not using medically acceptable contraception.
  • Patients taking other medications used as prophylaxis for migraine including topiramate, methysergide, anti-spasticity agents (e.g. tizanidine) and new generation antipsychotics (e.g. olanzapine) currently or within 1 month prior to entry to the trial.
  • Patients taking any of the following medications: beta-blockers, tricyclic antidepressants, antiepileptic drugs, calcium channel blockers, or monoamine oxidase inhibitors during or within 1 month prior to the study; daily oral NSAIDs, daily paracetamol, high dose magnesium supplements (600 mg/day), daily multivitamin preparations containing more than 10 mg riboflavin, daily use of oral corticosteroids, herbal preparations (e.g. feverfew, butterwort and St John's Wort). Patients who have received parenteral administration of botulinum toxin within the previous 3 months will also be excluded.
  • Patients who, in the opinion of the Investigator, have significant cerebrovascular disease (e.g. transient ischemic attacks, stroke) or significant cardiovascular disease within 30 days prior to screening.
  • Patients suffering from any significant psychiatric disorder.
  • Patient has a concomitant disease or condition that, in the opinion of the Investigator, could interfere with the conduct of the study or could put the patient at unacceptable risk.
  • Patients with renal dysfunction, defined as a serum creatinine of greater then 2 mg/dL.
  • Patients with hepatic dysfunction defined as a liver function test (AST, ALT, alkaline phosphatase, bilirubin) of greater than twice the upper limit of normal for their age group.
  • Patients with known alcohol or other substance abuse.
  • Patient is a participating Investigator, sub-investigator, study coordinator, or employee of a participating Investigator, or is an immediate family member of the aforementioned.
  • Any factor, which in the opinion of the Investigator would jeopardize the evaluation or safety or be associated with poor adherence to the protocol.
  • The patient's primary care physician recommends the patient should not take part in the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: 1
Drug: Tonabersat
Tablets, 4 week dose titration and 16 weeks treatment at target dose of 40 mg per day
Other Names:
  • SB220453
Drug: Tonabersat
Tablets: 4 week titration and 16 weeks at target dose of 80 mg per day
Other Names:
  • SB220453
Experimental: 2
Drug: Tonabersat
Tablets, 4 week dose titration and 16 weeks treatment at target dose of 40 mg per day
Other Names:
  • SB220453
Drug: Tonabersat
Tablets: 4 week titration and 16 weeks at target dose of 80 mg per day
Other Names:
  • SB220453
Placebo Comparator: 3
Drug: Placebo
Tablets; 4 week dose titration with 16 weeks at target dose

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Reduction in the mean monthly number of migraine attacks over the last 2 months of the treatment period.
Time Frame: 4 weeks baseline and 20 weeks DB treatment
4 weeks baseline and 20 weeks DB treatment
Safety and tolerability: incidence of all AEs, serious adverse events (SAEs) and those leading to withdrawal of study medication, review of laboratory data, including hematology, biochemistry, and urinalysis, physical examinations, and vital signs.
Time Frame: 4 weeks baseline, 20 weeks DB treatment and 13 months open label extension
4 weeks baseline, 20 weeks DB treatment and 13 months open label extension
Assessment of population pharmacokinetics for tonabersat - blood samples will be collected from a sub-population of patients
Time Frame: 20 weeks DB treatment
20 weeks DB treatment

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
• Reduction in mean monthly migraine attacks during the last 4 months of the treatment period and during each month of the treatment period.
Time Frame: 4 weeks baseline and 20 weeks DB treatment
4 weeks baseline and 20 weeks DB treatment
• Proportion of patients defined as a responder i.e. difference between treatment groups in the number of patients with a reduction of at least 50% in the mean monthly frequency of migraine attacks during defined periods.
Time Frame: 4 week baseline and 20 weeks DB treatment
4 week baseline and 20 weeks DB treatment
• Reduction in mean monthly migraine headache days i.e. the difference between the two treatment groups in the reduction from baseline during defined periods
Time Frame: 4 weeks baseline and 20 weeks DB treatment
4 weeks baseline and 20 weeks DB treatment
• Proportion of patients defined as a responder i.e. difference between treatment groups in the number of patients with a reduction of at least 50% in the mean monthly number of migraine headache days during defined periods
Time Frame: 4 weeks baseline and 20 weeks DB treatment
4 weeks baseline and 20 weeks DB treatment
• Reduction in mean monthly consumption (number of days per month) of rescue medication during defined periods
Time Frame: 4 weeks baseline and 20 weeks DB treatment
4 weeks baseline and 20 weeks DB treatment
• Onset of action (defined as first monthly period for which a significant difference between treatment groups is observed and is then maintained over the rest of the treatment period).
Time Frame: 4 weeks baseline and 20 weeks DB treatment
4 weeks baseline and 20 weeks DB treatment
• Difference between treatment groups in the maximum severity of migraine attacks occurring during defined periods
Time Frame: 4 weeks baseline and 20 weeks DB treatment
4 weeks baseline and 20 weeks DB treatment
• Summary of the Migraine Disability Assessment Score (MIDAS) assessments.
Time Frame: 4 weeks baseline, 20 weeks DB treatment and 13 months open label extension
4 weeks baseline, 20 weeks DB treatment and 13 months open label extension

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Minster Research Ltd

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Richard Lipton, MD, Montefiore Medical Center Headache Unit

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2007

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 1, 2008

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 1, 2009

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 24, 2007

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 24, 2007

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 26, 2007

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
March 31, 2009

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 30, 2009

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2009

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • TON/03/07-CLIN

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings