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Terminated Phase 2 Interventional Results available

A Study of TAK-994 in Adults With Type 1 and Type 2 Narcolepsy

ClinicalTrials.gov ID: NCT04096560

Public ClinicalTrials.gov record NCT04096560. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Oct 20, 2026, 3:13 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Randomized, Double-Blind, Placebo-Controlled, Multiple Rising Oral Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of TAK-994 in Patients With Narcolepsy With or Without Cataplexy (Narcolepsy Type 1 or Narcolepsy Type 2)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The main aims of the study are: * To check for side effects from TAK-994 and check what dose of TAK-994 participants can tolerate. * To check what dose range provides adequate relief of narcolepsy symptoms. * To check how much TAK-994 stays in the blood of participants, over time. The study will have 4 parts. Participants can only join 1 of the parts. A. Participants with type 1 narcolepsy will take either TAK-994 or placebo tablets for 28 days. A placebo looks just like TAK-994 but will not have any medicine in it. B. Participants with type 1 narcolepsy will take 1 of 3 doses of TAK-994 or placebo tablets for 56 days. C. Participants with type 1 narcolepsy in China only will take TAK-994 or placebo tablets for 56 days. D. Participants with type 2 narcolepsy will take either TAK-994 or placebo tablets for 28 days.

Study identification

NCT ID
NCT04096560
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 2
Lead sponsor
Takeda
Industry
Enrollment
97 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years to 65 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
May 27, 2020 (Actual)
Primary completion
Nov 5, 2021 (Actual)
Completion
Nov 5, 2021 (Actual)
Last update posted
Oct 29, 2024

2020 – 2021

United States locations

U.S. sites
36
U.S. states
16
U.S. cities
34
Facility City State ZIP Site status
Wright Clinical Research Alabaster Alabama 35007 —
Mayo Clinic Arizona Phoenix Arizona 85054 —
CITrials - Bellflower Bellflower California 90706 —
Santa Monica Clinical Trials Los Angeles California 90025 —
Stanford School of Medicine Redwood City California 94063 —
Pacific Research Network, Inc San Diego California 92128 —
SDS Clinical Trials, Inc. Santa Ana California 92705 —
Alpine Clinical Research Center Boulder Colorado 80301 —
Delta Waves Sleep Disorders and Research Center Colorado Springs Colorado 80918 —
St. Francis Medical Institute Clearwater Florida 33765 —
Sleep Medicine Specialists of South Florida Miami Florida 33126 —
Clinical Trials of Florida Miami Florida 33186 —
JSV Clinical Research Study, Inc Tampa Florida 33624 —
Florida Pulmonary Research Institute, LLC Winter Park Florida 32789 —
NeuroTrials Research, Inc. Atlanta Georgia 30328 —
iResearch Atlanta, LLC Decatur Georgia 30030 —
Sleep Practitioners, LLC Macon Georgia 31210 —
Global Research Associates Stockbridge Georgia 30281 —
Hawaii Pacific Neuroscience Honolulu Hawaii 96817 —
Lutheran Sleep Disorder Center Fort Wayne Indiana 46804 —
University of Kansas Medical Center Research Institute, Inc. Kansas City Kansas 66160 —
Helene A. Emsellem, MD PC trading as "The Center for Sleep & Wake Disorders" Chevy Chase Maryland 20815 —
Boston Children's Hospital Boston Massachusetts 02115 —
Neurocare, Inc., dba Neurocare Center for Research Newton Massachusetts 02459 —
Research Carolina Elite LLC Denver North Carolina 28037 —
Clinical Research of Gastonia Gastonia North Carolina 28054 —
Raleigh Neurology Associates Raleigh North Carolina 27607 —
CTI Clinical Research Center Cincinnati Ohio 45245 —
Intrepid Research Cincinnati Ohio 45245 —
The Cleveland Clinic Foundation Cleveland Ohio 44195 —
Ohio Sleep Medicine and Neuroscience Institute Dublin Ohio 43017 —
Respiratory Specialists Wyomissing Pennsylvania 19610 —
Medical University of South Carolina (MUSC) Charleston South Carolina 29425 —
Bogan Sleep Consultants, LLC Columbia South Carolina 29201 —
Sleep Therapy & Research Center San Antonio Texas 78229 —
Comprehensive Sleep Medicine Associates Sugar Land Texas 77478 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 42 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04096560, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Oct 29, 2024 · Synced Oct 20, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT04096560 live on ClinicalTrials.gov.

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