Takeda will be speaking with agencies about the Phase III data and what the next steps should be. Credit: Tada Images/Shutterstock.

Two Phase III studies of Takeda’s epilepsy drug soticlestat for patients with the rare epilepsies Lennox-Gastaut syndrome (LGS) and Dravet syndrome have missed their primary endpoints.

The candidate was being investigated by Takeda in the SKYLINE (NCT04940624) and SKYWAY (NCT04938427) studies. Head of the neuroscience unit at Takeda, Sarah Sheikh, said that the company will be engaging with authorities about the next steps with the candidate.

Go deeper with GlobalData

Data Insights

The gold standard of business intelligence.

Find out more

Related Company Profiles

View all

The SKYLINE trial was a double-blind Phase III study evaluating soticlestat plus standard of care versus placebo plus standard of care in patients with refractory Dravet syndrome. The trial missed the primary endpoint of reduction from baseline in convulsive seizure frequency. It did, however, meet some of the secondary endpoints, showing clinically meaningful and nominally significant results in the responder rate, measures of caregiver and clinician global impression of improvement, and seizure intensity and duration scales over the 16-week treatment period.

The SKYWAY trial was a double-blind Phase III study that evaluated soticlestat plus standard of care versus placebo plus standard of care in patients with LGS. The trial missed the primary endpoint of reduction from baseline in major motor drop (MMD) seizure frequency as compared with placebo.

Soticlestat was generally well tolerated in both SKYLINE and SKYWAY studies.

A previous Phase II trial (NCT03650452) investigating soticlestat as an adjuvant therapy in patients with LGS or Dravet syndrome had met its primary endpoint of reduction of seizures.

How well do you really know your competitors?

Access the most comprehensive Company Profiles on the market, powered by GlobalData. Save hours of research. Gain competitive edge.

Company Profile – free sample

Thank you!

Your download email will arrive shortly

Not ready to buy yet? Download a free sample

We are confident about the unique quality of our Company Profiles. However, we want you to make the most beneficial decision for your business, so we offer a free sample that you can download by submitting the below form

By GlobalData
Visit our Privacy Policy for more information about our services, how we may use, process and share your personal data, including information of your rights in respect of your personal data and how you can unsubscribe from future marketing communications. Our services are intended for corporate subscribers and you warrant that the email address submitted is your corporate email address.

Soticlestat is a first-in-class selective inhibitor of cholesterol 24-hydroxylase (CH24H). It acts by inhibiting intracerebral CH24H, which leads to suppression of nerve cell death. The drug is being developed by Takeda following a $196m deal with the drug’s original developer, Ovid Therapeutics, in 2021.

Phase III data from other trials with soticlestat is pending and Takeda will now be hoping for a win so it can start to recoup some of those acquisition costs. On the company’s next steps, Sheikh said: “While we would have wished for more declarative results on the primary endpoints, we are encouraged by positive outcomes seen in the totality of the data and are looking forward to engaging health authorities to determine the best path forward.”

CEO of Ovid, Jeremy Levin, has also spoken out since Takeda released the Phase III data: “While SKYLINE narrowly missed its primary endpoint, we believe there are indications of effect in the secondary endpoints and the totality of the data in Dravet Syndrome patients.”

If approved, GlobalData predicts global sales for soticlestat to hit $242m in 2030. GlobalData is the parent company of Clinical Trials Arena.