Randomized, Double-Blind, Placebo-Controlled Cross-Over Study to Evaluate the Effects of Cannabidiol on Neurobehavioral and Function Outcomes in Sanfilippo Syndrome
The goal of this clinical trial is to test cannabidiol in Sanfilippo syndrome. The main questions it aims to answer are: 1) determine the safety of cannabidiol in Sanfilippo syndrome, and 2) explore the efficacy of cannabidiol in treating the neurobehavioral symptoms and functional outcomes of Sanfilippo syndrome. Each participant's caregiver will be asked to complete surveys related to the participant's behavior, mood, sleep, stooling, pain, and caregiver stress intermittently throughout the study. All participants will be enrolled into one of two cohorts based on enrollment order: 1. Sentinel Safety Cohort (first 5 participants) - all participants treated with Epidiolex (cannabidiol) 2. Controlled Cohort (next 30 participants) - participants randomized 1:1 (equal chance) to start treatment with Epidiolex (cannabidiol) or placebo for 16 weeks, followed by an 8-week washout period (no treatment). Participants then switch to the opposite treatment group for 16 weeks followed by all participants treated for 52 weeks with Epidiolex (cannabidiol).
• MPS III diagnosis confirmed by genetic testing
• ≥ 4 years of age
• Patient or parent/legal guardian is able and willing to provide informed consent. For patients 7 to 16 years of age, assent must also be provided when cognitively possible.
• If taking any of the following, no dose changes for the last 8 weeks:
‣ Anakinra
⁃ Fluoxetine
⁃ Probiotic supplement
• One of the following criteria are met:
‣ Previous participation in a gene/cell therapy or enzyme restorative clinical trial.
⁃ Previously ineligible to participate in a gene/cell therapy or enzyme restorative clinical trial due to advanced disease state.
⁃ Functional age, as measured by the Vineland, is ≤ 0.5 chronological age