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A Study of GWP42006 in People With Focal Seizures - Part B

Primary Purpose

Epilepsy, Focal Seizures

Status
Completed
Phase
Phase 2
Locations
International
Study Type
Interventional
Intervention
GWP42006
Placebo Control
Sponsored by
Jazz Pharmaceuticals
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Epilepsy focused on measuring Cannabidivarin, CBDV, GWP42006

Eligibility Criteria

18 Years - 65 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

For inclusion in Part B of the study patients must fulfil ALL of the following criteria:

  • Male or female aged between 18 and 65 years, inclusive.
  • Well-documented history of focal epilepsy, compatible electroencephalogram and clinical history.
  • Documented computerized tomography / magnetic resonance imaging that shows no progressive neurologic abnormality.
  • Has focal seizures despite prior treatment with at least two AEDs (whether as monotherapies or in combination).
  • Currently treated with one to three AEDs.
  • All medications or interventions for epilepsy (including ketogenic diet) must have been stable for one month prior to screening and the subject is willing to maintain a stable regimen throughout the study.
  • Subject is willing to keep any factors expected to affect seizures stable (such as the level of alcohol consumption and smoking).

The patient may not enter Part B of the study if ANY of the following apply:

  • Time of onset of focal epilepsy treatment is less than two years prior to enrolment.
  • Patient has seizures that are not of focal onset.
  • Patient only has focal seizures without impairment of consciousness or awareness and without an observable motor component (even if autonomic component is present).
  • Episode(s) of status epilepticus during one year prior to screening.
  • History of pseudo-seizures.
  • Vagus Nerve Stimulation, Deep Brain Stimulation, Responsive Neurostimulator System or other epilepsy neurostimulation device have been implanted or activated less than one year prior to screening, and/or stimulation parameters have been stable for less than one month, and/or battery life of unit not anticipated to extend for duration of trial.
  • Had epilepsy surgery within one year of screening.
  • Subject has clinically significant unstable medical conditions other than epilepsy.
  • Subject has an illness in the four weeks prior to screening or randomization, other than epilepsy, which in the opinion of the investigator would affect seizure frequency.
  • Subject has significantly impaired hepatic function at Visit 1.
  • Active suicidal plan/intent in the past six months, or a history of suicide attempt in the last two years, or more than one lifetime suicide attempt .
  • Subject is currently using or has in the past used recreational or medicinal cannabis, or cannabinoid based medications within the three months prior to screening and is unwilling to abstain for the duration for the study.
  • Subject has taken St John's Wort in the last two weeks and/or is unwilling to abstain throughout the study.
  • Subject has consumed grapefruit or grapefruit juice three days prior to randomization and/or unwilling to abstain in the three days prior to Visits B2 and B7.
  • Any known or suspected hypersensitivity to cannabinoids, sesame oil or any of the excipients of the IMP(s).
  • Subjects who have received an IMP within the 12 weeks prior to the screening visit.

Sites / Locations

Arms of the Study

Arm 1

Arm 2

Arm Type

Experimental

Placebo Comparator

Arm Label

GWP42006

Placebo control

Arm Description

GWP42006

Placebo

Outcomes

Primary Outcome Measures

Percentage change from baseline to the end of treatment in focal seizure frequency in subjects taking GWP42006 compared to placebo.

Secondary Outcome Measures

Number of subjects considered treatment responders.
Change from baseline in seizure subtypes frequency.
Change from baseline in composite seizure score.
Change from baseline in the number of focal seizure free days.
Change from baseline in the usage of rescue medication.
Subject Global Impression of Change (SGIC).
Physician Global Impression of Change (PGIC) at the end of treatment.
The incidence of adverse events as a measure of subject safety.

Full Information

First Posted
February 13, 2015
Last Updated
December 19, 2022
Sponsor
Jazz Pharmaceuticals
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1. Study Identification

Unique Protocol Identification Number
NCT02365610
Brief Title
A Study of GWP42006 in People With Focal Seizures - Part B
Official Title
A Double Blind, Randomized, Placebo-controlled, Two-part Study to Investigate the Pharmacokinetics, Followed by Efficacy and Safety of GWP42006 as add-on Therapy in Patients With Inadequately Controlled Focal Seizures.
Study Type
Interventional

2. Study Status

Record Verification Date
December 2022
Overall Recruitment Status
Completed
Study Start Date
March 2016 (Actual)
Primary Completion Date
July 2017 (Actual)
Study Completion Date
September 2017 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Jazz Pharmaceuticals

4. Oversight

Data Monitoring Committee
Yes

5. Study Description

Brief Summary
To investigate the potential antiepileptic effects of GWP42006 as add-on therapy in subjects with inadequately controlled focal seizures.
Detailed Description
This is a double blind, randomized, placebo controlled, two-part study. Part B only will be described in this record. Subjects who satisfy all inclusion and none of the exclusion criteria will enter a four-week baseline period, followed by a two-week dose escalation period (400 mg twice daily for one week, then 600 mg twice daily for one week), a six-week stable treatment period (800 mg twice daily) and a 12-day taper period. Subjects will be required to attend eight study visits. A follow-up phone call will take place four weeks after last dose. Subjects will be randomized to receive in a 1:1 ratio, GWP42006 or placebo. Subjects will be required to record a daily diary with information about their seizures, investigational medicinal product (IMP) and concomitant antiepileptic drug (AED) administration.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Epilepsy, Focal Seizures
Keywords
Cannabidivarin, CBDV, GWP42006

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Masking
ParticipantInvestigatorOutcomes Assessor
Allocation
Randomized
Enrollment
162 (Actual)

8. Arms, Groups, and Interventions

Arm Title
GWP42006
Arm Type
Experimental
Arm Description
GWP42006
Arm Title
Placebo control
Arm Type
Placebo Comparator
Arm Description
Placebo
Intervention Type
Drug
Intervention Name(s)
GWP42006
Other Intervention Name(s)
Cannabidivarin, CBDV
Intervention Type
Drug
Intervention Name(s)
Placebo Control
Other Intervention Name(s)
Placebo
Primary Outcome Measure Information:
Title
Percentage change from baseline to the end of treatment in focal seizure frequency in subjects taking GWP42006 compared to placebo.
Time Frame
Day -28 to Day 57
Secondary Outcome Measure Information:
Title
Number of subjects considered treatment responders.
Time Frame
Day -28 to Day 57
Title
Change from baseline in seizure subtypes frequency.
Time Frame
Day -28 to Day 57
Title
Change from baseline in composite seizure score.
Time Frame
Day -28 to Day 57
Title
Change from baseline in the number of focal seizure free days.
Time Frame
Day -28 to Day 57
Title
Change from baseline in the usage of rescue medication.
Time Frame
Day -28 to Day 57
Title
Subject Global Impression of Change (SGIC).
Time Frame
Day 57
Title
Physician Global Impression of Change (PGIC) at the end of treatment.
Time Frame
Day 57
Title
The incidence of adverse events as a measure of subject safety.
Time Frame
Day -28 to Day 96

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
65 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
For inclusion in Part B of the study patients must fulfil ALL of the following criteria: Male or female aged between 18 and 65 years, inclusive. Well-documented history of focal epilepsy, compatible electroencephalogram and clinical history. Documented computerized tomography / magnetic resonance imaging that shows no progressive neurologic abnormality. Has focal seizures despite prior treatment with at least two AEDs (whether as monotherapies or in combination). Currently treated with one to three AEDs. All medications or interventions for epilepsy (including ketogenic diet) must have been stable for one month prior to screening and the subject is willing to maintain a stable regimen throughout the study. Subject is willing to keep any factors expected to affect seizures stable (such as the level of alcohol consumption and smoking). The patient may not enter Part B of the study if ANY of the following apply: Time of onset of focal epilepsy treatment is less than two years prior to enrolment. Patient has seizures that are not of focal onset. Patient only has focal seizures without impairment of consciousness or awareness and without an observable motor component (even if autonomic component is present). Episode(s) of status epilepticus during one year prior to screening. History of pseudo-seizures. Vagus Nerve Stimulation, Deep Brain Stimulation, Responsive Neurostimulator System or other epilepsy neurostimulation device have been implanted or activated less than one year prior to screening, and/or stimulation parameters have been stable for less than one month, and/or battery life of unit not anticipated to extend for duration of trial. Had epilepsy surgery within one year of screening. Subject has clinically significant unstable medical conditions other than epilepsy. Subject has an illness in the four weeks prior to screening or randomization, other than epilepsy, which in the opinion of the investigator would affect seizure frequency. Subject has significantly impaired hepatic function at Visit 1. Active suicidal plan/intent in the past six months, or a history of suicide attempt in the last two years, or more than one lifetime suicide attempt . Subject is currently using or has in the past used recreational or medicinal cannabis, or cannabinoid based medications within the three months prior to screening and is unwilling to abstain for the duration for the study. Subject has taken St John's Wort in the last two weeks and/or is unwilling to abstain throughout the study. Subject has consumed grapefruit or grapefruit juice three days prior to randomization and/or unwilling to abstain in the three days prior to Visits B2 and B7. Any known or suspected hypersensitivity to cannabinoids, sesame oil or any of the excipients of the IMP(s). Subjects who have received an IMP within the 12 weeks prior to the screening visit.
Facility Information:
City
Havířov
Country
Czechia
City
Hradec Králové
Country
Czechia
City
Praha
Country
Czechia
City
Rychnov nad Kněžnou
Country
Czechia
City
Budapest
Country
Hungary
City
Esztergom
Country
Hungary
City
Hodmezovasarhely
Country
Hungary
City
Kecskemét
Country
Hungary
City
Pecs
Country
Hungary
City
Szombathely
Country
Hungary
City
Bologna
Country
Italy
City
Pavia
Country
Italy
City
Rome
Country
Italy
City
Bydgoszcz
Country
Poland
City
Elbląg
Country
Poland
City
Golub-Dobrzyn
Country
Poland
City
Katowice
Country
Poland
City
Krakow
Country
Poland
City
Kraków
Country
Poland
City
Warszawa
Country
Poland
City
Wrocław
Country
Poland
City
Barcelona
Country
Spain
City
Madrid
Country
Spain
City
Birmingham
Country
United Kingdom
City
Glasgow
Country
United Kingdom
City
Great Yarmouth
Country
United Kingdom
City
Stoke-on-Trent
Country
United Kingdom

12. IPD Sharing Statement

Citations:
PubMed Identifier
33998885
Citation
Brodie MJ, Czapinski P, Pazdera L, Sander JW, Toledo M, Napoles M, Sahebkar F, Schreiber A; GWEP1330 Study Group. A Phase 2 Randomized Controlled Trial of the Efficacy and Safety of Cannabidivarin as Add-on Therapy in Participants with Inadequately Controlled Focal Seizures. Cannabis Cannabinoid Res. 2021 Dec;6(6):528-536. doi: 10.1089/can.2020.0075. Epub 2021 Feb 15.
Results Reference
derived

Learn more about this trial

A Study of GWP42006 in People With Focal Seizures - Part B

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