Epilepsy in adult patients with tuberous sclerosis complex

Objectives Little is known about the evolution of epilepsy in individuals with tuberous sclerosis complex (TSC) in adulthood. This study aims at describing the characteristics of epilepsy in adult TSC patients attending a single multidisciplinary clinic. Materials and Methods We collected data about epilepsy (age at onset, seizure types, history of infantile spasms (IS), epilepsy diagnosis and outcome), genetic and neuroradiological findings, cognitive outcome and psychiatric comorbidities. Results Out of 257 adults with TSC, 183 (71.2%) had epilepsy: 121 (67.2%) were drug‐resistant; 59 (32.8%) seizure‐free, at a median age of 18 years. 22% of the seizure‐free patients (13/59) discontinued medication. Median age at seizure onset was 9 months. Seventy‐six patients (41.5%) had a history of IS. TSC2 pathogenic variants (p = 0.018), cortical tubers (p