CBD reduced seizures in 27% of children with severe epilepsy but did not improve quality of life | Research

The takeaway

In 41 children with Dravet or Lennox-Gastaut syndrome, CBD reduced seizures by 50% or more in 27% of patients, but overall quality of life and adaptive behavior scores did not improve after six months.

Parents of children with severe epilepsy, neurologists prescribing CBD, and researchers measuring treatment outcomes.

27% seizure reduction but zero quality of life improvement

What the researchers found

26.8% of patients achieved 50% or greater seizure reduction after six months of CBD. However, total quality of life scores did not change (85.71 to 83.12, p = 0.630). Motor skills scores on the Vineland-II actually decreased (48.67 to 45.18, p = 0.005). No other adaptive behavior or behavioral scores changed.

Why it matters

Seizure reduction is an important outcome, but families care about overall quality of life. This study suggests that even when CBD reduces seizures, it may not translate into meaningful improvements in daily functioning for children with profound intellectual disabilities.

The numbers in context

41 patients (median age 4.1 years, 25 male). CBD dose: 10 mg/kg/day. 26.8% had 50% or more seizure reduction. QOLCE unchanged (p = 0.630). Motor skills decreased (p = 0.005). No behavioral changes on K-CBCL.

How the study worked

Prospective open-label study of 41 pediatric patients (11 Dravet syndrome, 30 Lennox-Gastaut syndrome) treated with oral CBD at 10 mg/kg/day. Quality of life measured by QOLCE, adaptive behavior by Vineland-II and K-CBCL at baseline and 6 months.

What this study cannot tell us

Open-label study with no control group. Small sample (41 patients). All patients had profound intellectual disabilities, limiting generalizability. The decrease in motor skills may reflect disease progression rather than a CBD effect.

How to read the evidence

Prospective open-label study with validated outcome measures but no control group and small sample.

When this study was published

Published in 2022.

The bigger picture

This highlights a challenge in severe epilepsy treatment: reducing seizures is necessary but may not be sufficient to improve quality of life in children with profound neurological impairment.

Questions still open

Would higher CBD doses improve quality of life? Is the motor skills decline related to CBD or natural disease progression? Would children with less severe intellectual disabilities show QOL improvements?

Common questions

Does CBD improve quality of life for children with epilepsy?

In this study of 41 children with Dravet or Lennox-Gastaut syndrome, CBD reduced seizures in 27% but did not improve overall quality of life scores, possibly because all patients had profound intellectual disabilities.

How effective is CBD for severe childhood epilepsy?

About 27% of patients achieved a 50% or greater seizure reduction after six months on CBD at 10 mg/kg/day, but this seizure improvement did not translate into measurable gains in adaptive behavior or quality of life.

Read the original research

Effects of Cannabidiol on Adaptive Behavior and Quality of Life in Pediatric Patients With Treatment-Resistant Epilepsy.

Journal of clinical neurology (Seoul, Korea), 18(5), 547-552

View on PubMed ↗Publisher’s paper ↗

Citation

Kim, Se Hee; Choi, Han Som; Koo, Chung Mo; Joo, Bong-Rim; Park, Byung-Joo; Lee, Hae Kook; Lee, Joon Soo; Kim, Heung Dong; Kang, Hoon-Chul. (2022). Effects of Cannabidiol on Adaptive Behavior and Quality of Life in Pediatric Patients With Treatment-Resistant Epilepsy.. Journal of clinical neurology (Seoul, Korea), 18(5), 547-552. https://doi.org/10.3988/jcn.2022.18.5.547