Elizabeth Thiele, MD, PhD: CBD Shows Low-Dose Efficacy and Safety in TSC


The director of pediatric epilepsy and the Herscot Center for Tuberous Sclerosis Complex at Massachusetts General Hospital, and professor of neurology at Harvard Medical School spoke to the safety outcomes from GWPCARE6 and CBD’s low-dose efficacy.

“The higher dose wasn’t way more effective than the lower dose, and that suggests that, for the majority of patients, the lower dose should be effective. I think that’s good because a lower dose of medication usually means better tolerability.”

Recently presented data from the GWPCARE6 trial of cannabidiol, or CBD (Epidiolex; GW Pharmaceuticals) at the 73rd annual meeting of the American Epilepsy Society (AES), December 6-10, 2019, in Baltimore, Maryland, suggested that the treatment may be effective and safe in patients with tuberous sclerosis complex. The agent was approved in June 2018 for the treatment of Lennox-Gastaut and Dravet syndromes, so its efficacy in an additional condition is welcome for the epilepsy community.

To inquire more about the findings of the trial, NeurologyLive sat with investigator Elizabeth Thiele, MD, PhD, director, pediatric epilepsy and the Herscot Center for Tuberous Sclerosis Complex, Massachusetts General Hospital, and professor of neurology, Harvard Medical School, at AES 2019. She offered insight into the safety outcomes from the study and discussed how they compare to prior observations.

Notably, she mentioned that the low dose of 25 mg/kg showed a similar level of efficacy to the higher 50 mg/kg dose, suggesting that many patients may be able to get benefit from the therapy while avoiding a higher likelihood of experiencing the adverse events which can accompany higher dose treatments. Thiele also shared some insight into her clinical experience with the therapy, both on and off label.

For more coverage of AES 2019, click here.


Thiele E, Wong M. Cannabidiol (CBD) treatment in patients with seizures associated with tuberous sclerosis complex: a randomized, double-blind, placebo-controlled phase 3 trial (GWPCARE6). Presented at: AES 2019; December 6—10; Baltimore, Maryland. Abstract 1.293.

Related Videos
Sanjay R. Patel, MD, MS
Patricia K. Coyle, MD
Aliza Ben-Zacharia, PhD, DNP, ANP-BC, FAAN
 Brian G. Weinshenker, MD, FRCP
Kathy Zackowski, PhD, OTR
© 2024 MJH Life Sciences

All rights reserved.