drug-trials

Eisai starts enrolment for phase 2 narcolepsy study evaluating E2086

pharmafile | April 7, 2026 | News story | Research and Development |   

Eisai is to begin enrolling participants in its phase 2 study, Study 202, in patients with narcolepsy.

The company registered the screening for Study 202, which will evaluate the safety, efficacy and tolerability of E2086, on ClinicalTrials.gov.

Sites in Canada, China, Europe, Japan and South Korea are also planned.

Advertisement

A three-period, dose escalation study, Study 202 will study E2086, in adult patients with narcolepsy type 1 (NT1) or narcolepsy type 2 (NT2), at three dose strengths.

Results for E2086 will be compared against placebo, with data gathered through both objective and patient-reported measures of wake promotion.

E2086 is a selective orexin-2 receptor agonist for the treatment of narcolepsy, it is hypothesised that it will compensate for the loss of orexin in patients.

Previous non-clinical studies have shown E2086 to increase wake time and decrease cataplexy-like episodes in narcolepsy model mice and prolong wakefulness in wild-type mice.

When compared with placebo and an existing treatment (modafinil) in a proof-of-mechanism study, E2086 demonstrated an increased wake time.

Patients with NT1 report excessive daytime sleepiness and cataplexy in association with low levels of orexin, with NT2 patients experiencing excessive daytime sleepiness without reports of cataplexy.

A human health care (hhc) company, Eisai is focused on improving the lives of people affected by cancer, Alzheimer’s disease and other neurodegenerative conditions.

Related Content

No items found
The Gateway to Local Adoption Series

Latest content