EC-DBS ON: The surgical intervention named deep brain stimulation is a well-established neurosurgical treatment for drug-resistant epilepsy.The targets used in this study are extreme capsule.The devices used for intervention have been approved by Chinese National Medical Products Administration (CFDA). The postoperative drug dosage adjustment depends on the efficacy of DBS and the judgment of the epilepsy specialist.
Study summary
Evaluation of the Efficacy and Safety of Deep Brain Stimulation of the Extreme Capsule (EC) for the Treatment of Drug-Resistant Epilepsy
Eligibility
Sex
ALL
Min age
14 Years
Max age
65 Years
Healthy volunteers
No
Inclusion Criteria:
* Participants are between the ages of 14 -65 years of age
* Diagnosis of drug-resistant epilepsy follows the standard of resistance to regular medication treatment for at least two years. Comprehensive preoperative epilepsy assessment, combined with individualized fiber tracking, is used to determine whether the epileptogenic zone is located in cortex regions structurally connected to the extreme capsule.
* Persistence of disabling seizures at least 3 times per month or greater,
* Informed consent signed.
Exclusion Criteria:
* Structural alterations are present in the extreme capsule.
* Diagnosed with generalized or hereditary epilepsy with ion channel gene mutations;
* Psychogenic non-epileptic seizures within 12 months;
* Presence of implanted electrical stimulation medical device anywhere in the body (e.g., pacemaker, spinal cord stimulator, responsive neurostimulation) or any metallic implants in the head (e.g., aneurysm clips, cochlear implants). Note: Vagal nerve stimulators are allowed if the parameter remains stable for at least 3 months prior to the screening visit;
* Risk factors that would put the participant at risk for intraoperative or postoperative bleeding. (e.g., coagulation abnormalities, etc.) or the need for chronic anticoagulation or antiplatelet aggregation medications;
* IQ \< 55 or severe cognitive dysfunction, unable to complete the study;
* Diagnosed with a progressive neurological disorder (including progressive Rasmussen's encephalitis, etc.);
* Diagnosed with a severe neuropsychiatric disorder such as dementia, major depression (admission to a psychiatric specialty/hospital within 5 years or any suicidal or self-injurious tendencies), schizophrenia, or neurodegenerative disorders;
* Diagnosed with other serious physical disorders, internal diseases or severe abnormalities in liver or kidney function;
* Pregnant, or planning to pregnant within 2 years;
* Participation in another clinical study within 3 months;
* Not suitable for enrollment as assessed by the multidisciplinary team of the center.
Primary outcome measure(s)
Seizure frequency (SF28) — Up to 1 year after EC-DBS Seizure frequency (SF28) is defined as seizure count per month (28-day) period. The SF28 is calculated as follows, where D=total number of days for which seizure information is collected for the specific 28-day interval:
SF28=(Total number of seizures in D days/D)\*28. In addition, the baseline seizure frequency is defined as mean of 3-month SF28 in the baseline period. The seizure frequency in double-blind phase is defined as SF28 per month during the double-blind period. Percent change in seizure frequency=100\*(double-blind SF28-baseline SF28)/baseline SF28.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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