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RecruitingNarcolepsy Type 1

A Study of TAK-861 for the Treatment of Selected Central Hypersomnia Conditions

Eligible age

16–70 yrs

Accepts

All genders

Locations

12 states

Healthy volunteers

No

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About this study

The main aim is to evaluate the safety and tolerability of TAK-861 in participants with type 1 narcolepsy, who were exposed to previously tested doses of TAK-861.

Sponsor: Takeda

You may qualify if…

  • ✓ 1\. Participant with a diagnosis of NT1 who has completed a controlled trial with TAK-861, and for whom the investigator has no clinical objection to their enrollment.

You may not qualify if…

  • ✕ 1. Participant has a treatment-emergent adverse event (TEAE) that remains severe at the time of rollover related to the trial intervention from the parent trial or discontinued because of TEAEs in the parent trial.
  • ✕ 2. Participant has a risk of suicide according to endorsement of item 4 or 5 on the Columbia Suicide Severity Rating Scale (C-SSRS).
  • ✕ 3. The participant has alanine aminotransferase (ALT) and aspartate aminotransferase (AST) values greater than (\>) 1.5 times the upper limit of normal (ULN).
  • ✕ 4. Participant has a current medical disorder, other than narcolepsy with or without cataplexy, associated with excessive daytime sleepiness (EDS).
  • ✕ 5. Participant has current active major depressive episode (MDE) or has had an active MDE in the past 6 months.
  • ✕ 6. Participant has developed (within the last 6 months) gastrointestinal disease that is expected to influence the absorption of drugs.
  • ✕ 7. Participant has epilepsy or history of seizure.
  • ✕ 8. Participant has any other medical condition, such as anxiety, depression, heart disease, or significant hepatic, pulmonary, or renal disease, that requires them to take excluded medications.

Where it's recruiting

Alabama

Birmingham

California

Redwood City · Santa Ana

Colorado

Colorado Springs

Florida

Orlando

Georgia

Atlanta · Gainesville

North Carolina

Denver · Huntersville

Ohio

Cincinnati · Cleveland · Dublin

South Carolina

Charleston · Columbia

Texas

San Antonio

Virginia

Norfolk

Source: ClinicalTrials.gov · NCT05816382 · last updated 2026-03-05