Epilepsy Clinical Trials

• Male or female, age 18-75 years.

• Subjects of childbearing potential will use highly effective contraception.

• Proven history of focal seizures of hippocampal origin with bilateral seizure foci confirmed by scalp or intracranial ictal EEG (including confirmation by recordings from responsive neurostimulation \[RNS\] electrodes when applicable).

• Either

‣ bilateral hippocampal sclerosis on MRI (evidenced by increased FLAIR signal intensity in both hippocampi or by visual assessment showing reduced volume compared to normal) or

⁃ bilateral temporal hypometabolism on 18-Flourodeoxyglucose Positron Emission Tomography (FDG PET) (assessed by visual assessment, comparing temporal regions to frontal/parietal lobe neocortex). In this case, ictal EEG recordings must also include intracranial confirmation.

‣ or

⁃ a combination of unilateral instances of the evidence described in a. and b. (e.g., one side can be evidenced by criterion a. and the other side by criterion b.) MRI or PET scans used for assessment must have been acquired within 3 years of screening.

• Subject has had at least four clinical focal seizures, including at least two clinical focal seizures with objective manifestations, on average, per month for the 6 months prior to screening.

• Subject has previously had adequate (in opinion of investigator) therapeutic trials of at least two Anti-Seizure Medicines (ASMs).

• Current ASM regimen, and doses of other drugs known to affect seizure frequency (e.g., antidepressants), have been stable for at least three months prior to enrollment.

• Subject can converse and read in English or Spanish. Able to participate in required study procedures and provide signed informed consent.