Study to Evaluate the Efficacy and Safety of Once-Weekly Oral NBI-1065846 in the Treatment of Anhedonia in MDD (TERPSIS)
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ClinicalTrials.gov Identifier: NCT05165394 |
Recruitment Status :
Recruiting
First Posted : December 21, 2021
Last Update Posted : February 14, 2023
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
Anhedonia Major Depressive Disorder | Drug: Placebo Drug: NBI-1065846 | Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 88 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | A Randomized, Double-Blind, Placebo-Controlled, Proof-of-Concept Study to Evaluate the Efficacy and Safety of Once-Weekly Oral NBI-1065846 in the Treatment of Anhedonia in Major Depressive Disorder (TERPSIS STUDY) |
Actual Study Start Date : | November 30, 2021 |
Estimated Primary Completion Date : | November 2023 |
Estimated Study Completion Date : | December 2023 |

Arm | Intervention/treatment |
---|---|
Placebo Comparator: Placebo
Participant follows Placebo schedule (57 days)
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Drug: Placebo
Tablets for oral administration |
Experimental: Antidepressant
Participant follows NBI-1065846 schedule (57 days)
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Drug: NBI-1065846
Tablets for oral administration
Other Name: TAK-041 |
- Change in anhedonia severity, as measured by change in Dimensional Anhedonia Rating Scale (DARS) score from baseline to Day 57 [ Time Frame: Baseline, Day 57 ]
- Change in total Montgomery Åsberg Depression Rating Scale (MADRS) score from baseline to Day 57 in participants with moderate or higher severity depression [ Time Frame: Baseline, Day 57 ]
- Change in Clinical Global Impression - Severity (CGI-S) score from baseline to Day 57 [ Time Frame: Baseline, Day 57 ]

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Ages Eligible for Study: | 18 Years to 65 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
Participants must meet all of the following key inclusion criteria:
- Completed written informed consent.
- Aged 18 to 65 years, inclusive, at the time of informed consent.
- Primary diagnosis of MDD.
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Participants must meet one of the following criteria:
- must have been taking ≥1 antidepressant medication(s) for ≥8 weeks prior to screening.
- must have received ≥1 antidepressant medication(s) for ≥8 weeks in the current or most recent episode of depression.
- Snaith Hamilton Pleasure Scale (SHAPS) score is ≥30 at screening and Day 1.
Key Exclusion Criteria:
Participants will be excluded from the study if they meet any of the following key criteria:
- Any psychiatric disorder disallowed per protocol and electroconvulsive therapy (ECT) within 6 months prior to screening. Comorbid anxiety disorders are not exclusionary.
- Have a significant risk of suicidal or violent behavior.
- A history of seizure disorder, stroke, Alzheimer disease, Parkinson disease, multiple sclerosis, head injury associated with loss of consciousness for more than 15 minutes, or other neurodegenerative disorder.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05165394
Contact: Neurocrine Medical Information Call Center | 877-641-3461 | medinfo@neurocrine.com |
United States, Alabama | |
Neurocrine Clinical Site | Recruiting |
Birmingham, Alabama, United States, 35294 | |
United States, California | |
Neurocrine Clinical Site | Recruiting |
Garden Grove, California, United States, 92845 | |
Neurocrine Clinical Site | Recruiting |
Lemon Grove, California, United States, 92945 | |
Neurocrine Clinical Site | Recruiting |
Orange, California, United States, 92868 | |
Neurocrine Clinical Site | Recruiting |
Riverside, California, United States, 92506 | |
Neurocrine Clinical Site | Recruiting |
San Diego, California, United States, 92103 | |
Neurocrine Clinical Site | Recruiting |
San Francisco, California, United States, 94107 | |
United States, Florida | |
Neurocrine Clinical Site | Recruiting |
Orlando, Florida, United States, 32803 | |
Neurocrine Clinical Site | Recruiting |
Pensacola, Florida, United States, 32502 | |
Neurocrine Clinical Site | Recruiting |
Winter Park, Florida, United States, 32792 | |
United States, Georgia | |
Neurocrine Clinical Site | Recruiting |
Atlanta, Georgia, United States, 30338 | |
United States, Illinois | |
Neurocrine Clinical Site | Recruiting |
Chicago, Illinois, United States, 60641 | |
Neurocrine Clinical Site | Recruiting |
Skokie, Illinois, United States, 60076 | |
United States, Missouri | |
Neurocrine Clinical Site | Recruiting |
Saint Charles, Missouri, United States, 63304 | |
United States, Ohio | |
Neurocrine Clinical Site | Recruiting |
Columbus, Ohio, United States, 43210 | |
United States, Oklahoma | |
Neurocrine Clinical Site | Recruiting |
Oklahoma City, Oklahoma, United States, 73112 | |
United States, Texas | |
Neurocrine Clinical Site | Recruiting |
Dallas, Texas, United States, 75235 | |
Neurocrine Clinical Site | Recruiting |
Friendswood, Texas, United States, 77546 | |
Neurocrine Clinical Site | Recruiting |
Houston, Texas, United States, 77030 | |
United States, Washington | |
Neurocrine Clinical Site | Recruiting |
Everett, Washington, United States, 98201 | |
Puerto Rico | |
Neurocrine Clinical Site | Recruiting |
San Juan, Puerto Rico, 00926 |
Study Director: | Clinical Development Lead | Neurocrine Biosciences |
Responsible Party: | Neurocrine Biosciences |
ClinicalTrials.gov Identifier: | NCT05165394 |
Other Study ID Numbers: |
NBI-1065846-MDD2020 |
First Posted: | December 21, 2021 Key Record Dates |
Last Update Posted: | February 14, 2023 |
Last Verified: | February 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Anhedonia Major Depressive Disorder MDD NBI-1065846 TERPSIS |
Neurocrine Antidepressant Depression TAK-041 |
Anhedonia Depressive Disorder Depression Depressive Disorder, Major Mood Disorders |
Mental Disorders Behavioral Symptoms Neurobehavioral Manifestations Neurologic Manifestations Nervous System Diseases |