Purpose

Narcolepsy without cataplexy or Narcolepsy Type 2 (NT2) is a lifelong condition that makes people very sleepy during the day, regardless of how much sleep they get at night. People with NT2 may fall asleep suddenly, have trouble staying awake during the day, or may not be able to sleep well at night. They may have difficulty thinking clearly, paying attention, or remembering things, during the day. These symptoms can make daily activities like driving, working, or caring for their families challenging, impacting their quality of life. Orexin is a chemical made in the brain that helps keep a person awake and alert. TAK-360 acts like orexin. Previous studies have shown that medicines that act like orexin may keep people awake. The main aim of this study is to learn how safe TAK-360 is and how well adults with NT2 tolerate it. Researchers also want to find out if TAK-360 can help people with NT2 stay awake and determine the right dosage needed to do that. Participants will be randomly (by chance, like drawing names from a hat) assigned to get either TAK-360 or placebo in the treatment period. The placebo is a pill that looks just like TAK-360 but does not have any medicine in it. Using a placebo helps researchers learn about the real effect of the treatment.

Condition

Eligibility

Eligible Ages
Between 18 Years and 70 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  1. The participant weighs greater than equal or to (≥)40 kilograms (kg) and has a body mass index (BMI) between 16 and 38 kilograms per meter square (kg/m^2) [inclusive]. 2. The participant has a documented, current diagnosis of NT2.

Exclusion Criteria

  1. The participant has a current medical disorder associated with excessive daytime sleepiness (EDS) other than NT2. 2. The participant has medically significant thyroid disease. 3. The participant has a history of cancer in the past 5 years. (This exclusion does not apply to participants with carcinoma in situ [such as basal cell carcinoma] that has been treated and is stable, or who have been stable without further treatment. These participants may be included after approval by the medical monitor). 4. The participant has any of the following viral infections based on a positive test result: Hepatitis B surface antigen (at screening), hepatitis C virus (HCV) antibody (at screening), human immunodeficiency virus (HIV) antibody/antigen (at screening). 5. The participant has a clinically significant history of head injury or head trauma. 6. The participant has history of epilepsy, seizure, or convulsion (exception for a single febrile seizure in childhood). 7. The participant has a history of cerebral ischemia, transient ischemic attack (<5 years from screening), intracranial aneurysm, or arteriovenous malformation.

Study Design

Phase
Phase 2
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Treatment
Masking
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
TAK-360
Participants will receive TAK-360 tablets, orally, for 4 weeks.
  • Drug: TAK-360
    TAK-360 tablet.
Placebo Comparator
Placebo
Participants will receive TAK-360 matching-placebo tablets, orally, for 4 weeks.
  • Other: Placebo
    TAK-360 matching placebo tablet.

Recruiting Locations

Takeda Site 36
Auburn, Alabama 36832

Takeda Site 39
Chandler, Arizona 85224

Takeda Site 40
Chula Vista, California 91910

Takeda Site 14
Redwood City, California 94063-3132

Takeda Site 10
Santa Ana, California 92705-8519

Takeda Site 1
Colorado Springs, Colorado 80918-3408

Takeda Site 48
Bradenton, Florida 34209

Takeda Site 13
Brandon, Florida 33511-5719

Takeda Site 44
Miami, Florida 33155

Takeda Site 35
Miami, Florida 33176

Takeda Site 3
Orlando, Florida 32803-1468

Takeda Site 33
Orlando, Florida 32807

Takeda Site 32
Atlanta, Georgia 30328

Takeda Site 49
Bowie, Maryland 20715

Takeda Site 50
Lansing, Michigan 48911

Takeda Site 34
Lathrup Village, Michigan 48076

Takeda Site 4
St Louis, Missouri 63123-6968

Takeda Site 37
Middletown, New Jersey 07748

Takeda Site 8
Denver, North Carolina 28037

Takeda Site 6
Huntersville, North Carolina 28078-5082

Takeda Site 41
Winston-Salem, North Carolina 27103

Takeda Site 5
Cincinnati, Ohio 45245-4500

Takeda Site 45
Cleveland, Ohio 44106

Takeda Site 2
Columbia, South Carolina 29201-2923

Takeda Site 38
Austin, Texas 78731

Takeda Site 42
El Paso, Texas 79912

Takeda Site 7
San Antonio, Texas 78229-4849

Takeda Site 11
Norfolk, Virginia 23510-1021

More Details

Status
Recruiting
Sponsor
Takeda

Study Contact

Takeda Contact
+1-877-825-3327
medinfoUS@takeda.com

Notice

Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.