Disclosed are methods and compositions relating to
antisense therapy for treating
epilepsy, such as a focal
epilepsy and
temporal lobe epilepsy, in a subject in need thereof by targeting GRIK2 mRNA. In particular, the disclosure provides methods for treating symptoms (e.g., seizures) of epilepsy in a subject by administering a particular
dose in a defined volume and in a specific
route of administration of an inhibitory ribopolynucleotide or adeno-associated
viral vector encoding the same, which is capable of inhibiting expression of GRIK2.