ClinicalTrials.gg
CompletedNCT03350035Updated Mar 9, 2023Results posted

Intravenous Ganaxolone as Adjunctive Therapy to Treat Subjects With Status Epilepticus

A Phase 2 interventional study of IV Ganaxolone active and IV Placebo, non-active in Status Epilepticus, Convulsive Status EPILEPTICUS and Non Convulsive Status Epilepticus, sponsored by Marinus Pharmaceuticals. Completed at 8 sites in United States. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2023-03-09.

Sponsored by Marinus Pharmaceuticals (part of Immedica Pharma) · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
17
Allocation
Randomized
Ages
12 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 41 studies in Status Epilepticus with a site in United States — 13 open to participants now, 13 under way, 2 of them phase 3. Status Epilepticus · United States.

Enrollment
20th of 30
17 · median 35
Started
2018
with 3 others
Phase 2
4 of 41
2 open now
Registered
15th of 41
by date
Lead sponsor
2 of 41
Marinus Pharmaceuticals

Among the 41 studies in Status Epilepticus with a site in United States, this one is the 20th largest by enrollment of the 30 interventional ones that give a count, is one of 4 that started in 2018, is one of 4 in phase 2, and was the 15th registered.

Status Epilepticus

124 studies on the registry are indexed under Status Epilepticus; 37 are open to participants now.

Browse Status Epilepticus studies →

Open to participants now

13 of the 41 studies in Status Epilepticus with a site in United States are open now. Recruiting first, the newest first:

8 more — sign in →

All 13 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 29 Status Epilepticus studies recruiting now, 16 (55%) set no upper age limit and 8 (28%) stop at 75 or younger; 14 take children under 18; 2 take healthy volunteers.

This study: 12 Years and older · all sexes · no healthy volunteers.

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02

Study summary

This study will evaluate the effectiveness and safety of an investigational drug, IV ganaxolone, as adjunctive therapy to standard of care to treat subjects with status epilepticus.

Read the detailed description

This is a double-blind, randomized, placebo-controlled study to evaluate the safety, tolerability, and efficacy of adjunctive IV ganaxolone in subjects with SE.

Study drug will be added to standard of care before IV anesthetic during the treatment of SE.

Subjects will be screened for inclusion/exclusion criteria prior to receiving study drug as adjunctive therapy by continuous IV. Subject's will be followed up for 3 weeks post-treatment.

Subjects who are known to be at risk for SE may be consented and/or assented prior to an SE event.

03

Conditions studied

  • Status Epilepticus
  • Convulsive Status EPILEPTICUS
  • Non Convulsive Status Epilepticus
  • Epilepsy
04

Who can participate

Ages eligible
12 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Subjects 12 years of age and older
  • Clinical and/or electrographic seizures

Exclusion criteria

Exclusion Criteria:

  • of less than 24 hours
  • Anoxic brain injury as primary cause of SE
  • Recent (\<24 hour) traumatic brain injury as the primary cause of SE
  • Administered anesthesia for the treatment of SE
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
17 participants (actual)

Study arms

  • Experimental
    IV Ganaxolone active

    Ganaxolone IV loading dose with continuous infusion (maintenance dose) for 2-4 days followed by an 18-hour taper.

    Drug: IV Ganaxolone active

  • Placebo comparator
    IV Placebo, non-active

    Placebo IV loading dose with continuous infusion (maintenance dose) for 2-4 days followed by an 18-hour taper.

    Drug: IV Placebo, non-active

Interventions

  • DrugIV Ganaxolone active

    IV

  • DrugIV Placebo, non-active

    IV

06

What researchers measure

Primary outcomes

  1. Number of Participants Who Did Not Require an IV Anesthetic Drug for SE Treatment

    Number of participants who did not require an intravenous (IV) Anesthetic Drug (a third-line Treatment) for Status Epilepticus (SE) within the first 24 hours after Study Drug Initiation.

    Time frame: 24 hours post study drug initiation

Secondary outcomes

  1. Time to Cessation of SE

    Summary of Time to SE Cessation

    Time frame: Time to SE Cessation, assessed up to 24 hours

  2. Number of Participants Who Required No Escalation of Treatment for Ongoing or Recurrent SE

    Number of participants who Required No Escalation of Treatment for Ongoing or Recurrent SE

    Time frame: Drug initiation through follow-up period, up to approximately 4 weeks

  3. Number of Participants With No SE Recurrence Per Principal Investigator

    Number of participants with No SE Recurrence per Principal Investigator within 24hrs of starting treatment, during treatment period (excluding taper), during taper, during 24-hr follow-up period, and during follow-up period.

    Time frame: Baseline (within 24hrs of treatment) through follow up period, up to approximately 4 weeks.

  4. Seizure Burden

    Seizure Burden (%) Baseline and Percentage Change from Baseline by Time Point

    Time frame: Baseline (Pre-dose) to <-24hrs (Post Dose)

07

Results

Posted Dec 15, 2022
Limitations and caveats
2 deaths during the follow-up were extracted from the SAE reconciliation database.

Participant flow

Participant flow — Overall Study
MilestoneLow - GNXMedium - GNXHigh - GNX
Started548
Completed347
Not completed201
Withdrew: Lack of efficacy200
Withdrew: Subject discharged to hospice001

Outcome measures

PrimaryNumber of Participants Who Did Not Require an IV Anesthetic Drug for SE Treatment

Number of participants who did not require an intravenous (IV) Anesthetic Drug (a third-line Treatment) for Status Epilepticus (SE) within the first 24 hours after Study Drug Initiation.

Time frame:
24 hours post study drug initiation
Reported as:
Count of participants · Participants
Number of Participants Who Did Not Require an IV Anesthetic Drug for SE Treatment
ParticipantsLow - GNXMedium - GNXHigh - GNX
Number of Participants Who Did Not Require an IV Anesthetic Drug for SE Treatment548
SecondaryTime to Cessation of SE

Summary of Time to SE Cessation

Time frame:
Time to SE Cessation, assessed up to 24 hours
Reported as:
Median · Minutes
Time to Cessation of SE
MinutesLow - GNXMedium - GNXHigh - GNX
Time to Cessation of SE5.000 (2.45 to 6.05)5.580 (4.18 to 22.25)10.16 (1.34 to 241.00)
SecondaryNumber of Participants Who Required No Escalation of Treatment for Ongoing or Recurrent SE

Number of participants who Required No Escalation of Treatment for Ongoing or Recurrent SE

Time frame:
Drug initiation through follow-up period, up to approximately 4 weeks
Reported as:
Count of participants · Participants
Number of Participants Who Required No Escalation of Treatment for Ongoing or Recurrent SE
ParticipantsLow - GNXMedium - GNXHigh - GNX
Number of Participants Who Required No Escalation of Treatment for Ongoing or Recurrent SE338
SecondaryNumber of Participants With No SE Recurrence Per Principal Investigator

Number of participants with No SE Recurrence per Principal Investigator within 24hrs of starting treatment, during treatment period (excluding taper), during taper, during 24-hr follow-up period, and during follow-up period.

Time frame:
Baseline (within 24hrs of treatment) through follow up period, up to approximately 4 weeks.
Reported as:
Count of participants · Participants
Number of Participants With No SE Recurrence Per Principal Investigator
ParticipantsLow - GNXMedium - GNXHigh - GNX
Within 24hrs of starting treatment547
During treatment period (excluding taper)347
During taper327
During 24-hr follow-up period338
During follow-up period137
SecondarySeizure Burden

Seizure Burden (%) Baseline and Percentage Change from Baseline by Time Point

Time frame:
Baseline (Pre-dose) to <-24hrs (Post Dose)
Reported as:
Mean · Percentage change from baseline
Seizure Burden
Percentage change from baselineLow - GNXMedium - GNXHigh - GNX
Change from Baseline at 0 to <- 1 Hour Post-Dose-94.80 ± 8.458-74.63 ± 25.247-84.01 ± 18.862
Change from Baseline at 0 to <- 4 Hour Post-Dose-98.59 ± 2.092-71.75 ± 33.498-87.99 ± 21.439
Change from Baseline at >4 to <- 8 Hours Post-Dose-77.53 ± 17.950-59.80 ± 48.352-96.58 ± 6.772
Change from Baseline at >8 to <- 16 Hours Post-Dose-47.98 ± 38.063-53.29 ± 44.490-93.75 ± 13.306
Change from Baseline at >16 to <- 24 Hours Post-Dose-99.53 ± 0.935-48.25 ± 45.475-81.16 ± 47.368
Change from Baseline at 0 to <- 24 Hours Post-Dose-78.64 ± 15.286-56.10 ± 42.183-89.06 ± 20.039

Adverse events

Collected over Baseline (within 24hrs of treatment) through follow up period, up to approximately 4 weeks. Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Low - GNX2/5 (40%)2/5 (40%)5/5 (100%)
Medium - GNX0/4 (0%)2/4 (50%)3/4 (75%)
High - GNX1/8 (12.5%)2/8 (25%)7/8 (87.5%)
Most frequent serious events
Most frequent serious events
EventLow - GNXMedium - GNXHigh - GNX
SedationNervous system disorders0/51/41/8
Loss of consciousnessNervous system disorders0/51/40/8
FallInjury, poisoning and procedural complications0/51/41/8
Multiple fracturesInjury, poisoning and procedural complications0/51/40/8
PneumothoraxRespiratory, thoracic and mediastinal disorders0/51/40/8
SepsisInfections and infestations1/50/40/8
Endotracheal intubationSurgical and medical procedures1/50/40/8
Withdrawal of life supportSurgical and medical procedures1/50/40/8
Intestinal perforationGastrointestinal disorders0/50/41/8
Most frequent other events
Most frequent other events
EventLow - GNXMedium - GNXHigh - GNX
HypotensionVascular disorders2/50/42/8
SomnolenceNervous system disorders1/51/43/8
SedationNervous system disorders0/51/41/8
PainGeneral disorders1/51/40/8
LeukocytosisBlood and lymphatic system disorders0/50/42/8
HypokalaemiaMetabolism and nutrition disorders0/51/42/8
HypocalcaemiaMetabolism and nutrition disorders0/50/42/8
HypercaprniaRespiratory, thoracic and mediastinal disorders0/50/42/8
PneumoniaInfections and infestations0/51/41/8
HaematuriaRenal and urinary disorders1/50/41/8

Baseline characteristics

Safety Population

Age, Continuous
Age, Continuous(years)Low - GNXMedium - GNXHigh - GNXTotal
Mean57.8 ± 25.3562.0 ± 18.9653.8 ± 17.0456.9 ± 19.15
Sex: Female, Male
Sex: Female, Male(Participants)Low - GNXMedium - GNXHigh - GNXTotal
Female5229
Male0268
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Low - GNXMedium - GNXHigh - GNXTotal
Hispanic or Latino0000
Not Hispanic or Latino54615
Unknown or Not Reported0022
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Low - GNXMedium - GNXHigh - GNXTotal
American Indian or Alaska Native0000
Asian0000
Native Hawaiian or Other Pacific Islander0000
Black or African American1225
White3249
More than one race0000
Unknown or Not Reported1023
08

Study locations

8 sites
  • Nemours/AI duPont Hospital for Children
    Wilmington, Delaware 19803, United States
  • Nicklaus Children's Hospital
    Miami, Florida 33155, United States
  • Grady Hospital
    Atlanta, Georgia 30303, United States
  • Oschner Clinic Foundation
    New Orleans, Louisiana 70121, United States
  • Brigham and Women's Hospital
    Boston, Massachusetts 02115, United States
  • Henry Ford Hospital
    Detroit, Michigan 48202, United States
  • Duke Medical Center
    Durham, North Carolina 27710, United States
  • Allegheny General Hospital
    Pittsburgh, Pennsylvania 15212, United States
09

References and documents

Publications

  • Vaitkevicius H, Ramsay RE, Swisher CB, Husain AM, Aimetti A, Gasior M. Intravenous ganaxolone for the treatment of refractory status epilepticus: Results from an open-label, dose-finding, phase 2 trial. Epilepsia. 2022 Sep;63(9):2381-2391. doi: 10.1111/epi.17343. Epub 2022 Jul 10. PubMed 35748707 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Feb 2018 to primary completion in Sep 2019, 18 months.

Results were first posted in Dec 2022, 3 years 2 months after primary completion. A results delay was requested in Sep 2020.

How these figures are worked out, and which studies are left out of them.

Registered
Nov 17, 2017
First posted
Nov 22, 2017
StartActual
Feb 19, 2018
Primary completionActual
Sep 18, 2019
CompletionActual
Sep 18, 2019
Results delay requested
Sep 25, 2020
Results first posted
Dec 15, 2022
Last update
Mar 9, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 9, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03350035
Responsible party
Sponsor
First posted
Nov 22, 2017
Start date
Feb 19, 2018
Primary completion
Sep 18, 2019
Completion
Sep 18, 2019
Results posted
Dec 15, 2022
Last update
Mar 9, 2023

Study contacts

Maciej Gasior, MD, PhD
study director · Marinus Pharmaceuticals

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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