Cannabidiol Oral Solution as an Adjunctive Therapy for Treatment of Participants With Inadequately Controlled Lennox-Gastaut Syndrome

INSYS Therapeutics

Status and phase: Withdrawn; Phase 3

Conditions: Lennox-Gastaut Syndrome

Treatments: Drug: Cannabidiol Oral Solution; Drug: Placebo Solution

Study type: Interventional

Funder types: Industry

Identifiers

NCT02318537

INS011-14-024

Details and patient eligibility

About

This Phase 3 trial will enroll participants diagnosed with Lennox-Gastaut Syndrome (LGS) who are still experiencing at least 4 motor seizures involving the trunk or extremities per week, despite ongoing treatment with up to 3 antiepileptic drugs (AEDs) and who meet inclusion/exclusion criteria.

Following a 28-day baseline period, participants will begin an 84-day treatment period. Participants will be assigned to receive twice daily doses of placebo or cannabidiol oral solution at the highest dose determined to be safe in a previous trial.

Following study completion, all participants will be invited to receive Cannabidiol Oral Solution in an open label extension study (under a separate protocol).

Sex: All

Ages: 2 to 30 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Meets protocol-specified criteria for qualification and contraception, including clinical diagnosis of refractory LGS and onset of seizures according to protocol-specified criteria
• Is able to speak and understand the language in which the study is being conducted, is able to understand the procedures and study requirements and has voluntarily signed and dated an informed consent form approved by the Institutional Review Board before the conduct of any study procedure
• In the opinion of the Investigator, the participants and parent(s)/caregiver(s) are willing and able to comply with the study procedures and visit schedules, including venipuncture, twice daily dosing, accurate diaries, and the Follow-up Visits (if applicable).

Exclusion criteria

• Medical history is outside protocol-specified parameters
• Clinically significant history of allergic reactions or significant sensitivities to cannabinoids or to any of the other ingredients in the study drug
• Inadequate supervision by parents or guardians
• History or current use of dietary supplements, drugs or over-the counter medications outside protocol-specified parameters
• Signs, symptoms or history of any condition that, per protocol or in the opinion of the investigator, might compromise: 1) the safety or well-being of the participant or study staff; 2) the safety or well-being of the participant's offspring (such as through pregnancy or breast-feeding); 3) the analysis of results

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Triple Blind

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0 participants in 2 patient groups, including a placebo group

Cannabidiol Oral Solution

Experimental group

Description:

Participants will receive cannabidiol oral solution at an appropriate dose (no higher than 40 mg/kg/day) determined by data from a previous trial. The total daily dose will be administered in twice daily doses, approximately 12 hours apart.

Treatment:

Drug: Cannabidiol Oral Solution

Placebo Solution

Placebo Comparator group

Description:

Participants will receive matching placebo solution administered twice daily, approximately 12 hours apart.

Treatment:

Drug: Placebo Solution