×

Praxis Precision’s epilepsy drug misses main goal of mid-to-late stage study

By Thomson Reuters Jun 1, 2026 | 5:11 PM

June 1 (Reuters) – Praxis Precision Medicines said on Monday its experimental epilepsy drug failed to meet the main goal ​of a mid- to late-stage ‌study, prompting it to pause enrollment in another ongoing study while it reassesses the program.

Shares of the biotech firm fell more than 12% in ‌extended ​trading.

Here are some details:

• The ⁠drug, vormatrigine, was ⁠being tested in adults with focal onset seizures (FOS), a type of epilepsy where seizures begin in one part of the ​brain.

• Praxis said the treatment missed the main goal of reducing monthly seizure ⁠frequency, but met a ⁠secondary measure where more patients ​saw at least a 50% reduction in seizures.

• ​The trial was studying the drug’s safety ‌and efficacy in adults with FOS who are concurrently taking at least one but no more than three acceptable anti-seizure ⁠medications.

• The company said seizure reduction was more pronounced in the second half of the study, ⁠when patients ‌received the higher 30 mg ⁠dose.

• “We think it is crucial ​to ‌recognize that investors had not been ​giving ⁠much credit to this asset,” Piper Sandler analyst Yasmeen Rahimi said, adding that pausing enrollment in the second study was the “right call”.

(Reporting by Kunal Das in Bengaluru; Editing by ​Shilpi Majumdar)