Biogen has entered a collaboration with Stoke Therapeutics to develop and and commercialise zorevunersen to treat Dravet syndrome in all territories outside Canada, Mexico and the US. Dravet syndrome is a genetic developmental and epileptic encephalopathy characterised by cognitive and behavioural impairments and recurrent seizures.

The partnership splits the rights to Stoke’s epilepsy antisense oligonucleotide, with up to $385 million in potential payments due to Stoke.

Biogen (NASDAQ:BIIB) and Stoke Therapeutics (NASDAQ:STOK) said on Tuesday they are collaborating to develop and commercialize zorevunersen, an investigational treatment for Dravet syndrome, in territories outside the United States,

Biogen and Stoke Therapeutics have signed a deal to co-develop and sell Stoke’s experimental drug for Dravet syndrome, outside the U.S.