Clinical trial Recruiting at 34 sites Phase 3 Interventional Ages 18 and up

Assessing NBI-1065845 for treating major depressive disorder

Official title: A Randomized, Double-Blind, Placebo-Controlled Study to Assess the Efficacy and Safety of NBI-1065845 as Adjunctive Treatment in Subjects With Major Depressive Disorder (MDD)

Run by Neurocrine Biosciences · NCT06911112 · Data updated 2026-11-12

This study is testing a new treatment called NBI-1065845 to see if it can help people with major depression who haven't felt better with their current medications.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment200 (estimated)
SponsorNeurocrine Biosciences
Industry-sponsored
Locations39 sites (Huntsville, Alabama and 38 other locations)
StatusRecruiting
StartedMarch 31, 2025
Main results expectedJuly 2027
Study endsJuly 2027
Registry record updatedAugust 11, 2026
Trial IDNCT06911112 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults diagnosed with recurrent moderate to severe MDD who have not responded adequately to current oral antidepressant treatments.

Probably not a fit

Patients with other primary psychiatric disorders or those at imminent risk of self-harm may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the efficacy and safety of NBI-1065845 as an adjunctive treatment for individuals with Major Depressive Disorder (MDD) who have not responded adequately to current oral antidepressant therapies. Participants will receive either NBI-1065845 or a placebo while continuing their existing antidepressant regimen. The study aims to measure improvements in depressive symptoms using standardized assessment tools. It is a Phase 3 interventional trial, indicating a focus on confirming effectiveness and safety in a larger patient population.

Why it matters

Potential benefit: If successful, this treatment could provide a new option for patients with MDD who have not found relief with existing antidepressants.

How similar studies have gone: Previous studies have shown promise in using adjunctive treatments for MDD, suggesting potential for success with this approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

* Participant has a primary diagnosis of recurrent MDD (moderate or severe) or persistent depressive disorder.
* Participant has had an inadequate response to oral antidepressant treatments in the current episode of depression.
* Participant must have been taking oral antidepressants for at least 8 weeks and is willing to continue the same oral antidepressants at the same dose and frequency of administration throughout participation in the study.
* Total Hamilton Depression Rating Scale-17 Item (HAM-D17) score ≥22 at screening and at study baseline (Day 1).
* Willing and able to comply with all study procedures and restrictions in the opinion of the investigator.

Key Exclusion Criteria:

* A current or prior psychiatric disorder diagnosis in the last 1 year that was the primary focus of treatment other than MDD.
* Are considered by the investigator to be at imminent risk of suicide or injury to self or others.
* Participants depressive symptoms have previously demonstrated nonresponse to electroconvulsive therapy (ECT) in the current major depressive episode.

Where it's running

  • Neurocrine Clinical Site
    Huntsville, Alabama, United States
    Recruiting
  • Neurocrine Clinical Site
    Bryant, Arkansas, United States
    Recruiting
  • Neurocrine Clinical Site
    Glendale, California, United States
    Recruiting
  • Neurocrine Clinical Site
    Redlands, California, United States
    Recruiting
  • Neurocrine Clinical Site
    San Francisco, California, United States
    Recruiting
  • Neurocrine Clinical Site
    Hollywood, Florida, United States
    Recruiting
Show 33 more locations
  • Neurocrine Clinical Site
    Tampa, Florida, United States
    Recruiting
  • Neurocrine Clinical Site
    Atlanta, Georgia, United States
    Recruiting
  • Neurocrine Clinical Site
    New York, New York, United States
    Recruiting
  • Neurocrine Clinical Site
    Mason, Ohio, United States
    Recruiting
  • Neurocrine Clinical Site
    DeSoto, Texas, United States
    Recruiting
  • Neurocrine Clinical Site
    Charlottesville, Virginia, United States
    Recruiting
  • Neurocrine Clinical Site
    Kardzhali, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Plovdiv, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Rousse, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Sofia, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Sofia, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Varna, Bulgaria
    Recruiting
  • Neurocrine Clinical Site
    Kaunas, Lithuania
    Recruiting
  • Neurocrine Clinical Site
    Kaunas, Lithuania
    Recruiting
  • Neurocrine Clinical Site
    Kaunas, Lithuania
    Recruiting
  • Neurocrine Clinical Site
    Klaipėda, Lithuania
    Recruiting
  • Neurocrine Clinical Site
    Vilnius, Lithuania
    Recruiting
  • Neurocrine Clinical Site
    Bucharest, Romania
    Recruiting
  • Neurocrine Clinical Site
    Bucharest, Romania
    Recruiting
  • Neurocrine Clinical Site
    Craiova, Romania
    Recruiting
  • Neurocrine Clinical Site
    Oradea, Romania
    Recruiting
  • Neurocrine Clinical Site
    Banská Bystrica, Slovakia
    Recruiting
  • Neurocrine Clinical Site
    Bojnice, Slovakia
    Recruiting
  • Neurocrine Clinical Site
    Bratislava, Slovakia
    Recruiting
  • Neurocrine Clinical Site
    Košice, Slovakia
    Recruiting
  • Neurocrine Clinical Site
    Rimavská Sobota, Slovakia
    Recruiting
  • Neurocrine Clinical Site
    Svidník, Slovakia
    Recruiting
  • Neurocrine Clinical Site
    Vranov nad Topľou, Slovakia
    Recruiting
  • Neurocrine Clinical Site
    Irvine, California, United States
    Withdrawn
  • Neurocrine Clinical Site
    Miami, Florida, United States
    Active not recruiting
  • Neurocrine Clinical Site
    Boston, Massachusetts, United States
    Withdrawn
  • Neurocrine Clinical Site
    Saint Charles, Missouri, United States
    Active not recruiting
  • Neurocrine Clinical Site
    The Bronx, New York, United States
    Active not recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Dupilumab for Major Depressive Disorder

    This study tests whether dupilumab can engage immune targets in adults with major depressive disorder to see if it can help with depressive symptoms.

    Recruiting Phase 2 Icahn School of Medicine at Mount Sinai · New York, New York · NCT07908563

  • Accelerated vs Standard iTBS for Major Depression

    This trial tests whether giving more accelerated iTBS sessions is better tolerated and more effective than the standard schedule for adults with major depressive disorder.

    Recruiting Military Hospital 175 · Ho Chi Minh City · NCT07768397

  • Psilocybin with Structured Integrated Reframing Therapy for trauma-related MDD and PTSD

    This trial tests whether psilocybin therapy, alone or with Structured Integrated Reframing Therapy (SIRT), helps people with trauma-related major depressive disorder who are already on a stable antidepressant.

    Recruiting Phase 3 Khyber Medical University Peshawar · Islamabad, Capital and 2 other locations · NCT07703722

  • Magnesium Bisglycinate Added to Your Depression Treatment

    This study tests whether adding magnesium bisglycinate to your current antidepressant can help reduce depressive symptoms and improve sleep and daily functioning for adults with major depressive disorder.

    Recruiting All India Institute of Medical Sciences, Bhubaneswar · Bhubaneswar, Odisha · NCT07633080

  • Motif XCS System for treatment-resistant depression

    This study tests whether the Motif XCS System is safe and tolerable and might help people with treatment-resistant major depressive disorder.

    Recruiting at 4 sites Motif Neurotech, Inc. · Atlanta, Georgia and 3 other locations · NCT07594483

  • A Phase 3 test of DT120 for major depressive disorder

    DT120 is tested against placebo in adults with major depressive disorder to see if it can help reduce depressive symptoms.

    Recruiting at 23 sites Phase 3 Definium Therapeutics US, Inc. · Little Rock, Arkansas and 25 other locations · NCT07592689

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.