Stoke Therapeutics, Inc. announced positive new safety and efficacy data from patients treated with STK-001 in the two ongoing Phase 1/2a studies (MONARCH and ADMIRAL) and the SWALLOWTAIL open-label extension (OLE) study in children and adolescents with Dravet syndrome. These new data suggest clinical benefit for patients 2 to 18 years of age treated with multiple doses of STK-001. The Company anticipates additional data, including the end of study data from MONARCH (including patients treated with a single dose of 70mg) and ADMIRAL, as well as additional data from the SWALLOWTAIL and LONGWING OLEs, in the first quarter of 2024.

The Company plans to share an update on Phase 3 planning in the first half of 2024, pending the results from the completed Phase 1/2a studies and ongoing OLEs. Stoke will host a webinar and Conference Call for Analysts and Investors. Stoke will host a web webinar andonference callll for analysts and investors at 8:00 a.m. Eastern Time on Tuesday, July 25, 2023, to present positive new data from the two ongoing Phase 1/2a studies (MONarch and ADMIRAL)and the SWALLOWTAIL Open-label extension study in children and adolescents withDravet syndrome.

The webinar will be broadcast live on the investors & News section of Stoke's website at An archived replay of the webinar will be available for at least 90 days following the event. One out of 16,000 babies are born with Dravet syndrome, which is not concentrated in a particular geographic area or ethnic group. About STK-001 STK-001 is an investigational new medicine for the treatment of Dravet syndrome currently being evaluated in ongoing clinical trials.

Stoke believes that STK-001, a proprietary antisense oligonucleotide (ASO), has the potential to be the first disease-modifying therapy to address the genetic cause of Dravet syndrome. STK-001 is designed to upregulate NaV1.1 protein expression by leveraging the non-mutant (wild-type) copy of the SCN1A gene to restore physiological NaV1.1 levels, thereby reducing both occurrence of seizures and significant non-seizure comorbidities. STK-001 has been granted orphan drug designation by the FDA and the EMA, and rare pediatric disease designation by the FDA as a potential new treatment for Dravet syndrome.