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

• Status: Not yet recruiting
• Trial end date: 2026-12-31
• Target enrollment: 0
• Participant gender: All

Summary

The main aim is to evaluate the safety and tolerability of TAK-861 on participants with type 1 and type 2 narcolepsy from previous parent studies, TAK-861-2001 (NCT05687903) and TAK-861-2002 (NCT05687916).

• Phase: Phase 2/Phase 3
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Takeda

Criteria

Inclusion criteria:

1. Participant with a diagnosis of narcolepsy who has completed a controlled study with TAK-861 (including participants diagnosed with NT1 or NT2) and for whom the investigator has no clinical objection to their enrollment.

Exclusion criteria:

1. Participant has a moderate or severe ongoing treatment emergent adverse event (TEAE) related to the study drug from the parent study or discontinued because of TEAEs in the parent study.

2. Participant has a positive urine screen for drugs of abuse (findings confirmed) and/or positive alcohol test during any visit in their prior TAK-861 study, or during the screening period for participants with a dosing gap.

3. Participant has a risk of suicide according to endorsement of item 4 or 5 on the Columbia Suicide Severity Rating Scale (C-SSRS) on any visit in the parent TAK-861 study, or has positive answers on item 4 or 5 on the Screening/Baseline C-SSRS Lifetime (based on the past year) during the screening assessment for participants with a dosing gap.

4. Participant has alanine aminotransferase (ALT) and aspartate aminotransferase (AST) >1.5 times the upper limit of normal (ULN) at multiple visits in the parent study and the findings are of clinical significance, per investigator or sponsor opinion, or ALT/AST >1.5 times ULN during the screening period for participants with a dosing gap.

5. Participant has a current medical disorder, other than narcolepsy with or without cataplexy, associated with excessive daytime sleepiness (EDS).

6. Participant has current active major depressive episode (MDE) or has had an active MDE in the past 6 months.

7. Participant has developed (within the last 6 months) gastrointestinal disease that is expected to influence the absorption of drugs (i.e., a history of malabsorption, esophageal reflux, peptic ulcer disease, erosive esophagitis, frequent [more than once per week] occurrence of heartburn, or any surgical intervention).

8. Participant has epilepsy or history of seizure.

9. 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.

10. Participant has a history of cerebral ischemia, transient ischemic attack (<5 years ago), or cerebral hemorrhage.

11. Participant has a history of myocardial infarction, clinically significant coronary artery disease, clinically significant angina, clinically significant cardiac rhythm abnormality, or heart failure.

12. Participant has a history of cancer in the past 5 years (does not apply to participants with carcinoma in situ that has been resolved without further treatment, or basal cell skin cancer.