2153
Study 202 was an open-label, add-on study in patients with partial or generalized epilepsy treated with valproic acid (VPA), carbamazepine (CBZ), phenytoin (PHT), or topiramate (TPM) as monotherapy.
 potential therapeutic event: treated 
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: adverse event, potential therapeutic event 
Text: {0} 
Answer:
 potential therapeutic event: treated 