In the current issue
Less invasive, but how much benefit?
Three recent studies ask what a smaller intervention can promise: treatment-specific benefit, durable seizure control, and a meaningful safety advantage.
In this episode: - A small sham-controlled taVNS crossover study and the difference between improvement and demonstrated superiority. - Long-term SEEG-guided radiofrequency thermocoagulation, changing treatment groups and incomplete follow-up. - Volume-based RF-TC for focal cortical dysplasia: a promising MRI safety signal with important limits.
Reading notes: - These interventions and populations are distinct, not a head-to-head comparison. - Hong’s pilot did not demonstrate active-treatment superiority to sham; it establishes neither equivalence nor universal ineffectiveness. - Pesente’s one-year 19/135 seizure-free result applies to the selected RF-TC-only group, including repeat procedures. The abstract mixes responder denominators; the disputed responder and five-year percentages are omitted from the episode. - Hayashi’s primary endpoint was MRI-detected deep white matter infarction. Overall neurological deficit rates were not significantly different. Similar observed seizure outcomes do not establish noninferiority or equivalence; favorable ILAE 1–3 is broader than seizure freedom.
In this issue3 topics
- What a sham-controlled taVNS pilot can and cannot establish about treatment-specific benefit.
- Long-term SEEG-guided RF-TC outcomes and the limits of selected cohorts and incomplete follow-up.
- Volume-based RF-TC for focal cortical dysplasia: distinguishing an MRI safety signal from overall neurological safety.