FDA approves new treatment for adults with partial-onset seizures
The U.S. Food and Drug Administration approved XCOPRI (cenobamate tablets) to treat partial-onset seizures in adults.
Drug Reaction with Eosinophilia and Systemic Symptoms (DRESS), also known as multiorgan hypersensitivity, has been reported among patients taking XCOPRI. In the clinical trials, some patients experienced DRESS, and one patient died, when XCOPRI was titrated rapidly (weekly or faster titration). No cases of DRESS were reported in an open-label safety study of 1,339 epilepsy patients when XCOPRI was started at 12.5 mg per day and adjusted every two weeks; however, this finding does not show that the risk of DRESS is prevented by a slower titration. A higher percentage of patients who took XCOPRI also had a shortening of the QT interval (an assessment of certain electrical properties of the heart) of greater than twenty milliseconds compared to placebo. XCOPRI should not be used in patients with hypersensitivity to cenobamate or any of the inactive ingredients in XCOPRI or Familial Short QT syndrome. QT shortening can be associated with ventricular fibrillation, a serious heart rhythm problem.
Antiepileptic drugs (AEDs), including XCOPRI, increase the risk of suicidal thoughts or behavior in patients taking these drugs for any indication. Patients taking an AED for any indication should be monitored for the emergence or worsening of depression, suicidal thoughts or behavior, and/or any unusual changes in mood or behavior. XCOPRI may cause neurological adverse reactions, including somnolence (sleepiness) and fatigue, dizziness, trouble with walking and coordination, trouble with thinking, and visual changes. Patients should also be advised not to drive or operate machinery until the effect of XCOPRI is known.
The most common side effects that patients in the clinical trials reported were somnolence (sleepiness), dizziness, fatigue, diplopia (double vision), and headaches.
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