Clinical Trial: The Pharmacokinetics of Cannabidiol (CBD) and Its Effects in Children With Severe Epilepsy

Study Status: Not yet recruiting
Recruit Status: Not yet recruiting
Study Type: Observational

Official Title:

Brief Summary: The purpose of this study is to determine if cannabidiol (CBD) obtained via the state of Minnesota reduces seizures in patients with severe intractable epilepsy (Dravet Syndrome or Lennox Gastaut Syndrome), and to measure blood levels of CBD to help determine CBD concentration-response characteristics.

Detailed Summary:

Patients with medically refractory epilepsy who are registering to take CBD in the State of Minnesota will be offered the opportunity to participate in this study. If consent to participation is obtained, the patient (or more likely, the patient's guardian) will be asked to begin a seizure diary for at least a 7-day period prior (ideally, longer) to receiving the CBD, and to continue tracking seizures throughout the study. Upon receipt of CBD from the Minnesota dispensary, subjects will take their CBD as directed and will return to the clinic for a repeat visit (which is part of standard care) occurring 2-8 weeks after continual use of CBD. During these clinic visits, patients undergo blood draws to monitor their other prescribed AED concentrations as part of standard of care. In addition to the standard blood draw, the research participant will be asked to provide a blood sample of 5 ml to measure CBD concentrations. As most patients are instructed to take CBD two hours prior to their standard of care AEDs, clinical experience indicates that most patients are taking CBD quite early in the morning (around 6 AM). Thus, the time of sample collection will be recorded as hours post-dose, and will likely be nearer peak serum concentrations. If a study participant has an indwelling intravenous access port, they will be asked to provide an additional sample of 5 ml at least one hour after the initial sample. During the repeat visit, subjects will be asked to continue documenting seizure activity in their seizure diary while they continue their CBD treatment. Any changes to AEDs administered concurrently with CBD will also be recorded.

Subjects who are already on a stable regimen of CBD will also be eligible to participate. At a clinic visit, they will be asked to provide a blood sample of 5 ml, the time of each sample will be recorded as hours post-dose of CBD. They will also be
Sponsor: Gillette Children's Specialty Healthcare

Current Primary Outcome: Reduction in seizures [ Time Frame: a 7-day seizure diary completed at least twice within 3 months ]

Subjects or parents/guardians of subjects will record seizure activity in seizure diaries both prior to and during cannabidiol administration


Original Primary Outcome: Same as current

Current Secondary Outcome: Cannabidiol concentration [ Time Frame: 1 time at a clinic visit within three months. If a patient has a port, they will be asked to provide an additional blood sample of 5 ml at least one hour after the first sample during the same clinic visit. ]

Each subject will provide a blood sample of 5 ml to measure concentrations of cannabidiol


Original Secondary Outcome: Same as current

Information By: Gillette Children's Specialty Healthcare

Dates:
Date Received: August 11, 2016
Date Started: September 2016
Date Completion: September 2019
Last Updated: September 19, 2016
Last Verified: August 2016