NCT07266545

Brief Summary

The purpose of this research is to understand how changes in RNA editing relate to treatment response in unipolar and bipolar depression.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
120

participants targeted

Target at P50-P75 for phase_4

Timeline
55mo left

Started Feb 2026

Longer than P75 for phase_4

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress7%
Feb 2026Dec 2030

First Submitted

Initial submission to the registry

November 25, 2025

Completed
10 days until next milestone

First Posted

Study publicly available on registry

December 5, 2025

Completed
2 months until next milestone

Study Start

First participant enrolled

February 17, 2026

Completed
2.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 31, 2028

Expected
2 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2030

Last Updated

February 23, 2026

Status Verified

February 1, 2026

Enrollment Period

2.9 years

First QC Date

November 25, 2025

Last Update Submit

February 19, 2026

Conditions

Outcome Measures

Primary Outcomes (1)

  • Change in Montgomery-Åsberg Depression Rating Scale (MADRS) score

    The Montgomery-Åsberg Depression Rating Scale (MADRS) is scored on a scale of 0 to 60, with each of the 10 items rated from 0 to 6 by a trained clinician during an interview. A higher score indicates a more severe level of depression, with common severity ranges being: 0-6 (normal), 7-19 (mild), 20-34 (moderate), and 35-60 (severe).

    Baseline, Week 2, Week 8, Week 10, Week 16

Study Arms (2)

Vortioxetine

EXPERIMENTAL

Subjects randomized to the vortioxetine arm will begin 8 weeks of treatment with vortioxetine at 10 mg/day, titrated to 20 mg/day (after 7 days). Subjects who do not meet remission criteria will enter a second 8 week augmentation phase.

Drug: VortioxetineDrug: Cariprazine (Augmentation Phase)

Bupropion

EXPERIMENTAL

Subjects randomized to the bupropion arm will begin 8 weeks of treatment with buproprion extended release at 150 mg/day; titrated to 300 mg/day (after 7 days) Subjects who do not meet remission criteria will enter a second 8 week augmentation phase.

Drug: Bupropion extended releaseDrug: Cariprazine (Augmentation Phase)

Interventions

Vortioxetine, once daily, for 8 weeks

Vortioxetine

Bupropion extended release, once daily, for 8 weeks

Bupropion

Participants who do not meet remission criteria will enter a second 8-week augmentation phase (Weeks 9-16). During this phase, cariprazine will be added to the existing regimen, administered orally once daily in the morning, starting at 1.5 mg/day and titrated up to 3.0 mg/day in one week.

BupropionVortioxetine

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Adult females and males, aged 18-65 years
  • Must have the capacity to understand study procedures, to comply with them for the entire length of the study, and to provide informed consent.
  • Current major depressive episodes associated with MDD, BD-I, or BD-II, confirmed using the SCID-IV-CV.
  • Symptom severity score on the Quick Inventory for Depressive Symptomatology - Clinician (QIDS-C16) \> 10.
  • Ability to travel for assessment visits.
  • Negative urine pregnancy test for people of childbearing potential
  • People of childbearing potential must be using an acceptable method of birth control during the study, such as hormonal contraception, intrauterine device, bilateral tubal ligation, partner's documented vasectomy, or complete abstinence from intercourse with childbearing potential, with barrier methods permitted only when used in combination with one of these primary methods.

You may not qualify if:

  • All candidates meeting any of the following criteria at baseline will be excluded from study participation:
  • Individuals who cannot understand English will not be enrolled because informed consent, study procedures, and interviews require comprehension of English.
  • Inability to provide written, voluntary informed consent
  • Failure to score at least 75% on a 4-item comprehension assessment related to study goals, risks, and benefits
  • For BD-I: not having used at least one mood stabilizer (e.g., lithium, valproate, or mood-stabilizing antipsychotics) at a stable dose and within a therapeutically effective antimanic range for a minimum of one month.
  • History of treatment-refractory depression, defined as non-response to two or more antidepressant or mood-stabilizing regimens despite adequate dose, duration, and adherence during the current episode.
  • Participants with active suicidal ideation, defined as a MADRS item #10 score greater than 4 or a "yes" response to item #4 (ideation with intent) or item #5 (ideation with plan) on the C-SSRS, will be excluded
  • A medically serious suicide attempt within the past 6 months, defined as requiring emergency department evaluation, a medical procedure, or admission to a hospital (e.g., internal medicine, cardiology, or ICU)
  • Current use of monoamine oxidase inhibitors or use within 14 days following discontinuation of a monoamine oxidase inhibitor
  • Presence of mixed symptoms of depression, defined as a YMRS score ≥12
  • Current use of any of the study medications (e.g., vortioxetine, bupropion, or cariprazine) at the time of enrollment (previous use of these medications is acceptable)
  • Prior hypersensitivity reaction or documented non-response to any of the study medications
  • A history of seizure disorder; complicated febrile convulsions (e.g., prolonged, focal, or recurrent); current or past diagnosis of bulimia nervosa or anorexia nervosa; or any condition known to lower seizure threshold, including abrupt discontinuation of alcohol, benzodiazepines, barbiturates, or antiepileptic drugs.
  • Known CYP2D6 or CYP2B6 poor metabolizer status, or a history of intolerance to medications primarily metabolized by these enzymes (e.g., vortioxetine, bupropion, SSRIs, efavirenz), due to increased risk of side effects.
  • Recent use (within the past 4 weeks) of long half-life psychotropic medications with active metabolites that may interfere with study outcomes, including fluoxetine and long-acting injectable forms of aripiprazole and paliperidone.
  • +17 more criteria

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Mayo Clinic in Rochester

Rochester, Minnesota, 55905, United States

RECRUITING

Related Links

MeSH Terms

Conditions

Depressive DisorderBipolar Disorder

Interventions

Vortioxetinecariprazine

Condition Hierarchy (Ancestors)

Mood DisordersMental DisordersBipolar and Related Disorders

Intervention Hierarchy (Ancestors)

PiperazinesHeterocyclic Compounds, 1-RingHeterocyclic Compounds

Study Officials

  • Aysegul Ozerdem, MD, PhD

    Mayo Clinic

    PRINCIPAL INVESTIGATOR
  • Deniz Ceylan, MD, PhD

    Mayo Clinic

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Scott E. Feeder

CONTACT

Study Design

Study Type
interventional
Phase
phase 4
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

November 25, 2025

First Posted

December 5, 2025

Study Start

February 17, 2026

Primary Completion (Estimated)

December 31, 2028

Study Completion (Estimated)

December 31, 2030

Last Updated

February 23, 2026

Record last verified: 2026-02

Data Sharing

IPD Sharing
Will not share

Locations