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

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.

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00465517
Enrollment
147
Registered
2007-04-25
Start date
2007-02-28
Completion date
2008-11-30
Last updated
2023-03-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Catamenial Epilepsy, Partial Epilepsy

Keywords

Partial onset seizures, Complex-partial seizures, Anticonvulsant, Partial seizures, Catamenial epilepsy

Brief 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. 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.

Interventions

DRUGGanaxolone

Oral suspension 200-500 mg 3x/day

OTHERPlacebo

non-active placebo

Sponsors

Marinus Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 69 Years
Healthy volunteers
No

Inclusion criteria

* 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; * 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.

Exclusion criteria

* 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. * 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.

Design outcomes

Primary

MeasureTime frameDescription
Mean Weekly Log-transformed Seizure Frequency During Weeks 1 Through 10Week 1 through Week 10Weekly 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.

Secondary

MeasureTime frameDescription
Change From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 10Baseline and at Week 1 through Week 10Summary 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.
Change From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 10Baseline and at Week 3 through Week 10Summary 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.
Percent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 10Baseline and at Week 1 through Week 10Summary 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.
Percent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 10Baseline and at Week 3 through Week 10Summary 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.
Mean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Weeks 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10Mean weekly Seizure Frequency for each week post-dosing During Weeks 1 to 10 is presented.
Percent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10Baseline and at Week 1 through Week 10Seizure 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.
Number of Responders During Weeks 1 Through 10Baseline and at Week 1 through Week 10Responders 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.
Mean Weekly Log-transformed Seizure Frequency During Weeks 3 Through 10Week 3 through Week 10Weekly 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
Number of Seizure-free Participants Up to Week 2Up to Week 2Number of seizure-free participants is presented.
Number of Seizure-free Participants During Weeks 3 Through 10Week 3 through Week 10Number of seizure-free participants is presented.
Number of Seizure-free Participants During Weeks 1 Through 10Week 1 through Week 10Number of seizure-free participants is presented.
Number of Seizure-free Days Up to Week 2Up to Week 2Summary of Seizure-Free days is presented.
Number of Seizure-free Days During Week 3 Through 10Week 3 through Week 10Summary of Seizure-Free days is presented.
Number of Seizure-free Days During Week 1 Through 10Week 1 through Week 10Summary of Seizure-Free days is presented.
Number of Responders During Weeks 3 Through 10Baseline and at Week 3 through Week 10Responders 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.

Countries

United States

Participant flow

Recruitment details

No recruitment details specified

Pre-assignment details

Participants were randomized (Visit 4, Week 0, before dosing) to receive investigational product in an active:placebo ratio of 2:1.

Participants by arm

ArmCount
Ganaxolone
Suspension formulation 50 mg/mL TID
98
Placebo
Placebo Suspension 50 mg/mL TID
49
Total147

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event73
Overall StudyLost to Follow-up10
Overall StudyWithdrawal by Subject41

Baseline characteristics

CharacteristicGanaxoloneTotalPlacebo
Age, Continuous39.1 years
STANDARD_DEVIATION 11.74
39.5 years
STANDARD_DEVIATION 11.51
40.2 years
STANDARD_DEVIATION 11.11
Ethnicity (NIH/OMB)
Hispanic or Latino
7 Participants11 Participants4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
91 Participants136 Participants45 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Black or African American
8 Participants12 Participants4 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
2 Participants5 Participants3 Participants
Race (NIH/OMB)
White
87 Participants129 Participants42 Participants
Region of Enrollment
United States
98 participants147 participants49 participants
Sex: Female, Male
Female
64 Participants100 Participants36 Participants
Sex: Female, Male
Male
34 Participants47 Participants13 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 980 / 49
other
Total, other adverse events
82 / 9838 / 49
serious
Total, serious adverse events
5 / 984 / 49

Outcome results

Primary

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.

Time frame: Week 1 through Week 10

Population: ITT Population. Only those participants with data available at the specified data points were analyzed.

ArmMeasureValue (MEAN)Dispersion
GanaxoloneMean Weekly Log-transformed Seizure Frequency During Weeks 1 Through 105.20 log[seizures per week]Standard Deviation 9.286
PlaceboMean Weekly Log-transformed Seizure Frequency During Weeks 1 Through 1010.77 log[seizures per week]Standard Deviation 44.156
Secondary

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.

Time frame: Baseline and at Week 1 through Week 10

Population: ITT Population. Only those participants with data available at the specified data points were analyzed.

ArmMeasureValue (MEAN)Dispersion
GanaxoloneChange From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 10-1.27 Seizures per weekStandard Deviation 3.567
PlaceboChange From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 101.41 Seizures per weekStandard Deviation 15.075
Secondary

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.

Time frame: Baseline and at Week 3 through Week 10

Population: Only those participants with data available during Weeks 3 to 10 were analyzed.

ArmMeasureValue (MEAN)Dispersion
GanaxoloneChange From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 10-1.07 Seizures per weekStandard Deviation 3.909
PlaceboChange From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 102.52 Seizures per weekStandard Deviation 20.229
Secondary

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

Time frame: Week 3 through Week 10

Population: Only those participants with data available during Weeks 3 to 10 were analyzed.

ArmMeasureValue (MEAN)Dispersion
GanaxoloneMean Weekly Log-transformed Seizure Frequency During Weeks 3 Through 105.44 log[seizures per week]Standard Deviation 9.431
PlaceboMean Weekly Log-transformed Seizure Frequency During Weeks 3 Through 1011.90 log[seizures per week]Standard Deviation 50.209
Secondary

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.

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

Population: ITT Population. Only those participants with data available at the specified data points were analyzed

ArmMeasureGroupValue (MEAN)Dispersion
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 14.53 Seizures per weekStandard Deviation 11.195
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 25.09 Seizures per weekStandard Deviation 9.638
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 35.02 Seizures per weekStandard Deviation 9.743
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 45.69 Seizures per weekStandard Deviation 10.738
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 55.12 Seizures per weekStandard Deviation 9.085
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 65.65 Seizures per weekStandard Deviation 8.894
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 76.68 Seizures per weekStandard Deviation 10.894
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 84.63 Seizures per weekStandard Deviation 8.401
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 95.07 Seizures per weekStandard Deviation 9.897
GanaxoloneMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 104.83 Seizures per weekStandard Deviation 9.282
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 813.47 Seizures per weekStandard Deviation 63.157
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 17.25 Seizures per weekStandard Deviation 21.668
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 610.43 Seizures per weekStandard Deviation 38.133
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 28.79 Seizures per weekStandard Deviation 34.548
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 1013.60 Seizures per weekStandard Deviation 56.711
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 37.80 Seizures per weekStandard Deviation 28.163
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 713.15 Seizures per weekStandard Deviation 62.762
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 49.13 Seizures per weekStandard Deviation 30.768
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 911.64 Seizures per weekStandard Deviation 49.387
PlaceboMean Weekly Seizure Frequency for Each Week After Dosing During Weeks 1 to 10Week 511.64 Seizures per weekStandard Deviation 42.864
Secondary

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.

Time frame: Baseline and at Week 1 through Week 10

Population: ITT Population.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
GanaxoloneNumber of Responders During Weeks 1 Through 1023 Participants
PlaceboNumber of Responders During Weeks 1 Through 107 Participants
Secondary

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.

Time frame: Baseline and at Week 3 through Week 10

Population: ITT Population.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
GanaxoloneNumber of Responders During Weeks 3 Through 1025 Participants
PlaceboNumber of Responders During Weeks 3 Through 106 Participants
Secondary

Number of Seizure-free Days During Week 1 Through 10

Summary of Seizure-Free days is presented.

Time frame: Week 1 through Week 10

Population: ITT Population. Only those participants with data available at the specified data points were analyzed

ArmMeasureValue (MEAN)Dispersion
GanaxoloneNumber of Seizure-free Days During Week 1 Through 1045.9 Seizure free daysStandard Deviation 22.11
PlaceboNumber of Seizure-free Days During Week 1 Through 1046.8 Seizure free daysStandard Deviation 20.59
Secondary

Number of Seizure-free Days During Week 3 Through 10

Summary of Seizure-Free days is presented.

Time frame: Week 3 through Week 10

Population: Only those participants with data available during Weeks 3 to 10 were analyzed.

ArmMeasureValue (MEAN)Dispersion
GanaxoloneNumber of Seizure-free Days During Week 3 Through 1037.1 Seizure free daysStandard Deviation 18.5
PlaceboNumber of Seizure-free Days During Week 3 Through 1038.5 Seizure free daysStandard Deviation 16.17
Secondary

Number of Seizure-free Days Up to Week 2

Summary of Seizure-Free days is presented.

Time frame: Up to Week 2

Population: Only those participants with data available up to Week 2 were analyzed.

ArmMeasureValue (MEAN)Dispersion
GanaxoloneNumber of Seizure-free Days Up to Week 210.3 Seizure free daysStandard Deviation 4.41
PlaceboNumber of Seizure-free Days Up to Week 210.0 Seizure free daysStandard Deviation 3.78
Secondary

Number of Seizure-free Participants During Weeks 1 Through 10

Number of seizure-free participants is presented.

Time frame: Week 1 through Week 10

Population: ITT Population. Only those participants with data available at the specified data points were analyzed

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
GanaxoloneNumber of Seizure-free Participants During Weeks 1 Through 101 Participants
PlaceboNumber of Seizure-free Participants During Weeks 1 Through 100 Participants
Secondary

Number of Seizure-free Participants During Weeks 3 Through 10

Number of seizure-free participants is presented.

Time frame: Week 3 through Week 10

Population: Only those participants with data available during Weeks 3 to 10 were analyzed.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
GanaxoloneNumber of Seizure-free Participants During Weeks 3 Through 100 Participants
PlaceboNumber of Seizure-free Participants During Weeks 3 Through 101 Participants
Secondary

Number of Seizure-free Participants Up to Week 2

Number of seizure-free participants is presented.

Time frame: Up to Week 2

Population: Only those participants with data available Up to week 2 were analyzed.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
GanaxoloneNumber of Seizure-free Participants Up to Week 216 Participants
PlaceboNumber of Seizure-free Participants Up to Week 24 Participants
Secondary

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.

Time frame: Baseline and at Week 1 through Week 10

Population: Only those participants with data available during Weeks 1 to 10 were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
GanaxolonePercent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10CPS-17.47 Percent changeStandard Error 51.055
GanaxolonePercent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10GTC-30.65 Percent changeStandard Error 79.104
GanaxolonePercent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10SPS-motor-30.63 Percent changeStandard Error 81.214
PlaceboPercent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10CPS3.88 Percent changeStandard Error 82.986
PlaceboPercent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10GTC-37.75 Percent changeStandard Error 64.091
PlaceboPercent Change From Baseline in Mean Weekly Seizure Frequency by Subtype During Weeks 1 Through 10SPS-motor19.70 Percent changeStandard Error 195.966
Secondary

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.

Time frame: Baseline and at Week 1 through Week 10

Population: ITT Population. Only those participants with data available at the specified data points were analyzed

ArmMeasureValue (MEAN)Dispersion
GanaxolonePercent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 10-17.59 Percent changeStandard Deviation 48.867
PlaceboPercent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 1 Through 101.99 Percent changeStandard Deviation 63.16
Secondary

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.

Time frame: Baseline and at Week 3 through Week 10

Population: Only those participants with data available during Weeks 3 to 10 were analyzed.

ArmMeasureValue (MEAN)Dispersion
GanaxolonePercent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 10-12.08 Percent changeStandard Deviation 54.286
PlaceboPercent Change From Baseline in Mean Weekly Seizure Frequency During Weeks 3 Through 104.57 Percent changeStandard Deviation 71.88

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026