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Ezogabine

Phase 2

Amyotrophic Lateral Sclerosis | Small molecule | Neurology |GSK plc|Last Updated: Aug 28, 2019

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment65

FDA Designations

No designations recorded

Clinical trial landscape

Ezogabine · 1 trial · 1 indication

Phase 2 1
NCT02450552Clinical Trial of Ezogabine (Retigabine) in ALS SubjectsAmyotrophic Lateral Sclerosis
COMPLETED65 Analytics
PHASE2COMPLETED
Clinical Trial of Ezogabine (Retigabine) in ALS Subjects
Amyotrophic Lateral SclerosisUnlock trial analytics

Study Endpoints

Primary Endpoints

Change in Short-interval Intracortical Inhibition (SICI) Measured by Transcranial Magnetic Stimulation (TMS)
Screening, Baseline, Week 6, Week 8

Short-interval intracortical inhibition (SICI) or paired-pulse SICI is defined as the ratio of the response after a conditioning pulse equal to 80% of resting motor threshold (RMT) is administered 3 ms prior to the signaling pulse divided by motor evoked potential (MEP) amplitude. Transcranial magnetic stimulation (TMS) is a neurophysiologic test for assessing upper motor neuron function. Change in SICI will be assessed by transcranial magnetic stimulation (TMS) after treatment with 900 mg/day or 600 mg/day of ezogabine vs. matched oral placebo.

Secondary Endpoints

Change in Resting Motor Evoked Potential (MEP) Threshold (Prespecified Secondary Outcome of Primary Importance)
Screening, Baseline, Week 6, Week 8
Change in MEP Amplitude
Screening, Baseline, Week 6, Week 8
Change in Duration of Cortical Silent Period
Screening, Baseline, Week 6, Week 8
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Oral ezogabine 600 mg/dayEXPERIMENTAL -
Oral ezogabine 900 mg/dayEXPERIMENTAL -
PlaceboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
EzogabineDRUGPotiga is FDA-approved for adjunctive treatment of partial-onset seizures in patients aged 18 years and older who have responded inadequately to several alternative treatments.
PlaceboDRUGMatched placebo
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersYes
Study Sites12

ALS Subject Inclusion Criteria: * Male or female, aged 18 to 80. * Sporadic or familial ALS diagnosed as possible, laboratory-supported probable, probable, or definite as defined by revised El Escorial criteria. * Slow vital capacity (SVC) measure ≥ 50% of predicted for gender, height and age at th...

Countries:United States
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Frequently asked questions about Ezogabine

What is Ezogabine used for?

Ezogabine is an investigational small molecule being studied for epilepsy and amyotrophic lateral sclerosis (ALS). It is in Phase 2 clinical development for ALS and has completed a Phase 1 study in epilepsy. Ezogabine is not FDA approved and remains in clinical development.

Who makes Ezogabine?

Ezogabine is being developed by GSK plc, which trades under the ticker GSK. The company is conducting clinical trials of the drug in neurology indications, including epilepsy and amyotrophic lateral sclerosis.

What phase is Ezogabine in?

Ezogabine is in Phase 2 clinical development for amyotrophic lateral sclerosis (ALS). It has also completed a Phase 1 study in epilepsy. The drug is investigational and not yet approved by regulatory authorities.

What clinical trials is Ezogabine in?

Ezogabine has been studied in two clinical trials. NCT01462669 was a Phase 1 crossover study in Taiwanese subjects with epilepsy, completed with 1 participant. NCT02450552 was a Phase 2 trial in ALS subjects in the United States, completed with 65 participants.

Is Ezogabine the same as Retigabine?

Ezogabine is also known as retigabine. Clinical trials such as NCT02450552 refer to the drug as Ezogabine (Retigabine), confirming that the two names refer to the same compound.