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Partial EpilepsyPhase 2NCT00465517

A Randomized, Controlled Trial of Ganaxolone in Adult Uncontrolled Partial-Onset Seizures

A Phase 2 study testing Ganaxolone in people with Partial Epilepsy and Catamenial Epilepsy, run by Marinus Pharmaceuticals at 27 sites in United States.

Completed

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

Official record
Search all trials

Trial summary

The study will evaluate the effectiveness and safety of an investigational drug-ganaxolone - on partial seizure frequency in adults with epilepsy taking a maximum of 3 antiepileptic medications (AEDs). The study will also evaluate the effectiveness of ganaxolone in females with catamenial epilepsy. Read more about this study

Who is it for?
Ages 18 to 69 years
Conditions the study is for
Partial Epilepsy, Catamenial Epilepsy
What is being tested?
Ganaxolone
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
147 participants
Where
27 sitesUnited States
Study dates
Feb 2007to Nov 2008
Phase
Phase 2
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 18 to 69 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Diagnosis of epilepsy with POS with or without secondary generalized seizures according to the International League Against Epilepsy [ILAE] Classification of Epileptic Seizures (1981). Diagnosis should have been established by clinical history and CT or MRI of the brain to rule out progressive structural lesions and EEG with results consistent with partial-onset epilepsy.
  • During the 8 week baseline period preceding randomization visit (Visit 4), participants should have a documented seizure frequency of ≥ 3CPS per 4 weeks on average.
  • Participants should not be seizure free for more than 28 consecutive days during treatment with a stable dose of AEDs [Note: Participants with historically sufficiently high seizure frequency who fall short 1 seizure in any 4 weeks period or with a seizure-free period > 28 consecutive days may be allowed to enter the study after discussion with the Medical Monitor. Prolongation of the screening period for questionable cases may also be allowed by the Medical Monitor.]
  • Treatment with a stable dose of up to 3 (FDA approved) current AEDs for 1 month prior to screening.
  • Maintenance of current AEDs without a change in dosing for the duration of study.
  • Concomitant vigabatrin not permitted;
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  • Felbamate is allowed if the participant has been on felbamate for at least 18 months and has stable laboratory tests) for the course of the study. [Note: A shorter period for stable laboratory results may be allowed by the Medical Monitor, depending on the extent of dose change and the half-life of the AED.]
  • Participants receiving treatment with a vagal nerve stimulator (VNS) may be included as long as the VNS has been in place for at least 12 months prior to entry into the study, the VNS battery is not due for replacement during 0600 subject participation, and stimulation parameters have been kept constant for 1 month prior to screening. VNS will be counted as 1 of the 3 concomitant AEDs.
  • Male or female, 18 to 69 years of age (inclusive). [Note: Participants who are > 69 years of age but are of good health condition may be allowed to enter the study after discussion with and approval by the Medical Monitor.]
  • A 12-lead electrocardiogram (ECG) w/o clinically significant abnormalities.
  • Be properly informed of the nature and risks of the study and give informed consent in writing, prior to entering the study.
  • Able to participate for the full term of study.
  • Able to keep a seizure \& medication diary throughout the course of the study.
  • Sexually active women of childbearing potential (WCBP) must be using a medically acceptable method of birth control and have a negative qualitative β-human chorionic growth hormone (β-HCG) pregnancy test result from a urine sample collected at the initial screening visit. A woman of childbearing potential is defined as a female who is biologically capable of becoming pregnant. A medically acceptable method of birth control includes intrauterine devices in place for at least 3 months, surgical sterilization, or adequate barrier methods (e.g., diaphragm and foam). An oral contraceptive alone is not considered adequate for the purpose of this study. Use of oral contraceptives in combination with another method (eg, a spermicidal cream) is acceptable.in participants who are not sexually active, abstinence is an acceptable form of birth control and serum β-HCG must be tested per protocol.
  • Participants with a history of depression who are stable and may be taking 1 anti-depressant medication.

Who cannot join

  • Presence of non-motor simple partial seizures only.
  • History of pseudoseizures in the last 5 years.
  • History of a primary generalized seizure in the last 5 years.
  • Past use of vigabatrin without stable visual fields tested twice over the 12 months after the last dose of vigabatrin (Concomitant use of vigabatrin is not allowed).
  • Seizures secondary to illicit drug or alcohol use, infection, neoplasia, demyelinating disease, degenerative neurological disease, or CNS disease deemed progressive, metabolic illness, or progressive degenerative disease.
  • Status epilepticus within the last year prior to randomization.
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  • Clinically unstable psychiatric disorder within the last 2 years.
  • Suicidal attempt within the last 5 years or current significant suicidal ideation.
  • History of psychosis within the last 5 years. [Note: Participants who suffered a psychosis that can well be explained by exogenous factors may be allowed to enter the study after discussion with and approval by the Medical Monitor.]
  • Current use of neuroleptics for psychosis.
  • A significant medical or surgical condition at screening which might compromise the hematologic, cardiovascular, pulmonary, renal, gastrointestinal, or hepatic systems or other conditions that would place the subject at increased risk.
  • Known sensitivity or allergy to progesterone or related steroid compounds.
  • History of drug use or alcohol abuse within the past 5 years.
  • Sexually active WCBP who are unwilling to use a double-barrier method and establish that they are currently not pregnant by submitting to a pregnancy test.
  • Females who are currently breastfeeding.
  • history of chronic noncompliance with drug regimens.
  • Exposure to any other investigational drug or device within 30 days prior to screening.
  • Alanine transferase (ALT; SGPT) or Aspartate transferase (AST; SGOT) levels > 3 times upper limits of normal (ULN) at screening.
  • Benzodiazepines may be used intermittently for the control of seizure clustering as a one time rescue up to a maximum of 4 occasions as follows:
  • Participants who need benzodiazepines for control of seizures more than once per month or more than 4 times total during the Titration and Maintenance Phases will be discontinued.
  • Once during the Titration Phase
  • No more than once per month during the Maintenance Phase
  • Each occasion may be a period of 24 hours, during which up to 3 doses of benzodiazepine may be used.
  • If a participant is taking a benzodiazepine chronically for epilepsy and non-epilepsy conditions, it will be counted as 1 of the 3 AEDs and the dose cannot be changed during the study.
  • Participant has history of repetitive seizures within the 12-month period preceding study entry where the individual seizures cannot be counted.
  • Inability to withhold grapefruit and grapefruit juice from diet for the entire clinical trial.

Trial locations and contacts

27 sites in 1 country.

27 sites in 1 country

United States27 sites
  • Neurosciences Institute at Albany Medical Center

    Albany, New York, 12208

  • Emory HealthCare

    Atlanta, Georgia, 30322

  • Anchutz Outpatient Pavillion Neurosciences Clinic/ University of Colorado Hospital

    Aurora, Colorado, 80010-0045

  • Mid-Atlantic Epilepsy and Sleep Center

    Bethesda, Maryland, 20817

  • University of Alabama

    Birmingham, Alabama, 35294-0021

  • Comprehensive Epilepsy Care Center for Children and Adults

    Chesterfield, Missouri, 63017

  • Ohio State University Medical Center

    Columbus, Ohio, 43210

  • Neurological Clinic of Texas, P.A.

    Dallas, Texas, 75230

  • 2799 West Grand blvd. CFP 071

    Detroit, Michigan, 48202

  • University of Florida McKnight Brain Institute

    Gainesville, Florida, 32610-0236

  • Overlook Hospital and Hackensack Medical Center

    Hackensack, New Jersey, 07601

  • University of Iowa Hospitals and Clinics

    Iowa City, Iowa, 52242

  • University of Kentucky, Dept. of Neurology

    Lexington, Kentucky, 40536

  • Arkansas Epilepsy Program

    Little Rock, Arkansas, 72205

  • University of Southern California Adult Comprehensive Epilepsy Center

    Los Angeles, California, 90033

  • Riddle Health Care Center for Neuroscience

    Media, Pennsylvania, 19063

  • Vanderbilt University Medical Ctr

    Nashville, Tennessee, 37232

  • Yale University School of Medicine

    New Haven, Connecticut, 06520

  • Drexel University / Hahneman Hospital

    Philadelphia, Pennsylvania, 19102

  • Thomas Jefferson University

    Philadelphia, Pennsylvania, 19107

  • Barrow Neurological Institute

    Phoenix, Arizona, 85013

  • Virginia Commonwealth University

    Richmond, Virginia, 23298

  • University of California-Davis

    Sacramento, California, 95817

  • Minnesota Epilepsy Group, PA

    Saint Paul, Minnesota, 55102-2383

  • Intercoastal Medicine

    Sarasota, Florida, 34232

  • Southern Illinois University Medical Center

    Springfield, Illinois, 62702

  • SUNY Upstate Medical University

    Syracuse, New York, 13210

Other trials in United States

About this study

Official title: A Double-blind, Randomized, Placebo-controlled Study to Evaluate the Safety, Tolerability, and Efficacy of Ganaxolone as add-on Therapy in Adult Subjects With Epilepsy Consisting of Uncontrolled Partial-onset Seizures.

The study will evaluate the effectiveness and safety of an investigational drug-ganaxolone - on partial seizure frequency in adults with epilepsy taking a maximum of 3 antiepileptic medications (AEDs). The study will also evaluate the effectiveness of ganaxolone in females with catamenial epilepsy.

Catamenial epilepsy refers to a relationship between seizure frequency and a woman's menstrual cycle, where the number of seizures increases around the time of a woman's menstrual cycle.

Being tested
Ganaxolone, Placebo
Keywords
Partial onset seizures, Complex-partial seizures, Anticonvulsant, Partial seizures, Catamenial epilepsy
Medical subject headings
Epilepsies, Partial, Seizures

What participants receive

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

  • GanaxoloneDrug

    Oral suspension 200-500 mg 3x/day

  • PlaceboOther

    non-active placebo

Study groups in NCT00465517
Study groupRoleWhat they receive
ganaxoloneExperimentalactive study drug
Receives: Drug: Ganaxolone
non-active drugPlacebo comparatorplacebo
Receives: Other: Placebo

What is being measured

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

  1. Mean Weekly Log-transformed Seizure Frequency During Weeks 1 Through 10

    Weekly seizure frequency, analyzed as mean weekly log-transformed seizure frequency [including partial-onset seizures (POS) with or without secondary generalization, but not non-motor simple partial seizure (SPS)] during Weeks 1 through 10.

    Measured: Week 1 through Week 10

Secondary outcomes (15)
  1. Mean Weekly Log-transformed Seizure Frequency During Weeks 3 Through 10

    Weekly seizure frequency, analyzed as mean weekly log-transformed seizure frequency [including POS with or without secondary generalization, but not non-motor SPS] during the Weeks 3 through 10

    Measured: Week 3 through Week 10

  2. Change From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 10

    Summary of change from Baseline in mean weekly seizure frequency is presented. Baseline was defined as the Day 0 assessment before study drug infusion. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit value.

    Measured: Baseline and at Week 1 through Week 10

  3. Change From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 10

    Summary of change from Baseline in mean weekly seizure frequency is presented. Baseline was defined as the Day 0 assessment before study drug infusion. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit value.

    Measured: Baseline and at Week 3 through Week 10

  4. Percent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 10

    Summary of percent change from Baseline in mean weekly seizure frequency is presented. Baseline was defined as the Day 0 assessment before study drug infusion. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit value.

    Measured: Baseline and at Week 1 through Week 10

  5. Percent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 10

    Summary of percent change from Baseline in mean weekly seizure frequency is presented. Baseline was defined as the Day 0 assessment before study drug infusion. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit value.

    Measured: Baseline and at Week 3 through Week 10

  6. Mean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10

    Mean weekly Seizure Frequency for each week post-dosing During Weeks 1 to 10 is presented.

    Measured: Weeks 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10

  7. Percent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10

    Seizure subtypes included Complex partial seizures (CPS), Generalized tonic-clonic seizure (GTCS), and Simple partial seizure (SPS)-motor. Percent Change from Baseline in Mean Weekly Seizure frequency by seizure subtype is presented. Baseline was defined as the Day 0 assessment before study drug infusion. Change from Baseline was calculated by subtracting Baseline value from the post-dose visit value.

    Measured: Baseline and at Week 1 through Week 10

  8. Number of Responders During Weeks 1 Through 10

    Responders were defined as participants experiencing ≥50% of reduction in mean weekly seizure frequency from the Baseline. Baseline was defined as the Day 0 assessment before study drug infusion.

    Measured: Baseline and at Week 1 through Week 10

  9. Number of Responders During Weeks 3 Through 10

    Responders were defined as participants experiencing ≥50% of reduction in mean weekly seizure frequency from the Baseline. Baseline was defined as the Day 0 assessment before study drug infusion.

    Measured: Baseline and at Week 3 through Week 10

  10. Number of Seizure-free Participants Up to Week 2

    Number of seizure-free participants is presented.

    Measured: Up to Week 2

  11. Number of Seizure-free Participants During Weeks 3 Through 10

    Number of seizure-free participants is presented.

    Measured: Week 3 through Week 10

  12. Number of Seizure-free Participants During Weeks 1 Through 10

    Number of seizure-free participants is presented.

    Measured: Week 1 through Week 10

  13. Number of Seizure-free Days Up to Week 2

    Summary of Seizure-Free days is presented.

    Measured: Up to Week 2

  14. Number of Seizure-free Days During Week 3 Through 10

    Summary of Seizure-Free days is presented.

    Measured: Week 3 through Week 10

  15. Number of Seizure-free Days During Week 1 Through 10

    Summary of Seizure-Free days is presented.

    Measured: Week 1 through Week 10

Timeline

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

  1. First posted25 Apr 2007 (estimated)
  2. Study startFeb 2007
  3. Primary completionOct 2008
  4. Study completionNov 2008

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
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
147 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00465517
Sponsor's protocol ID
1042-0600
Other IDs
V 1.3
Status last verified
Feb 2023
First submitted
24 Apr 2007
Last updated
15 Mar 2023
Data monitoring committee
No

Publications

  • Maguire MJ, Nevitt SJ. Treatments for seizures in catamenial (menstrual-related) epilepsy. Cochrane Database Syst Rev. 2021 Sep 16;9(9):CD013225. doi: 10.1002/14651858.CD013225.pub3.

    PubMed 34528245

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Ganaxolone in people with Partial Epilepsy and Catamenial Epilepsy, run by Marinus Pharmaceuticals at 27 sites in United States.

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 15 inclusion and 26 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 15 Mar 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 27 sites in United States. 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 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?

Yes. Results are posted in the registry (first posted 15 Mar 2023). 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?

Mean Weekly Log-transformed Seizure Frequency During Weeks 1 Through 10 (time frame: Week 1 through Week 10). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00465517, which also lists 1 linked publication.

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 15 Mar 2023.

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