FDA Defends Ruzurgi Approval, Says It Did Not Flout Firdapse Exclusivity

FDA denies allegations in an ongoing lawsuit with drug pricing undertones that two drugs approved to treat Lambert-Eaton myasthenic syndrome (LEMS), Firdapse and Ruzurgi, are the same even though they are indicated for different populations. The agency argues that while both drugs contain the same active ingredient, LEMS in adults is not the same as LEMS in children ages 6 to 17 years old, so FDA’s approval of Ruzurgi for children does not violate Firdapse’s orphan drug exclusivity for adult...