A Study to Assess the Efficacy and Safety of REL-1017 as Adjunctive Treatment for Major Depressive Disorder (MDD)

NCT ID: NCT04855747

Last Updated: 2025-11-06

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Clinical Phase

PHASE3

Total Enrollment

236 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-03-30

Study Completion Date

2025-01-14

Brief Summary

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This is an outpatient, 2-arm, Phase 3, multicenter, randomized, double-blind, placebo-controlled study to assess the efficacy and safety of REL-1017 once daily (QD) as an adjunctive treatment of Major Depressive Disorder. Study participants will continue to take their current antidepressant therapy in addition to the study drug or placebo for the duration of the treatment period.

Detailed Description

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Conditions

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Major Depressive Disorder Depression

Keywords

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REL-1017 Relmada NMDA Receptor Antagonist Esmethadone Adjunctive Antidepressant Reliance Depression

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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REL-1017 25 mg

During the double blind treatment period (28 days), participants will take 1 tablet of REL-1017 25 mg, orally, per day in addition to their ongoing antidepressant (ADT)

Group Type EXPERIMENTAL

REL-1017

Intervention Type DRUG

REL-1017 tablet

Placebo

During the double blind treatment period (28 days), participants will take 1 tablet of placebo, orally, per day in addition to their ongoing antidepressant (ADT).

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo tablet

Interventions

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REL-1017

REL-1017 tablet

Intervention Type DRUG

Placebo

Placebo tablet

Intervention Type DRUG

Other Intervention Names

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Esmethadone

Eligibility Criteria

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Inclusion Criteria

* Body mass index (BMI) between 18.0 and 35.0 kg/m2.
* Diagnosed with Major Depressive Disorder (MDD) based on Structured Clinical Interview for DSM-5 (SCID-5) for MDD.
* Current Major Depressive Episode (MDE).
* Treated on approved, stable first-line anti-depressant therapy with inadequate response to 1 to 3 valid courses of treatment with a depressant medication in the current MDE.

Exclusion Criteria

* Any current and primary psychiatric disorder other than Major Depressive Disorder.
* Severe alcohol or substance use disorder.
* History of bipolar I and II disorder, psychosis, and/or mania.
* Poorly controlled diabetes as defined by HbA1c \> 7.5%, despite standard care. Subjects with HbA1c \>7.5% may continue in the study if approved by the Relmada Medical Monitor.
* Having received ketamine or esketamine within 60 days prior to Screening.
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Levomecor Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Paul Greene, PhD

Role: STUDY_DIRECTOR

Relmada Therapeutics

Locations

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Relmada Site

Homewood, Alabama, United States

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Chandler, Arizona, United States

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Chandler, Arizona, United States

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Phoenix, Arizona, United States

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Tucson, Arizona, United States

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Bryant, Arkansas, United States

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Anaheim, California, United States

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Bellflower, California, United States

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Encino, California, United States

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Lafayette, California, United States

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Los Angeles, California, United States

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Newport Beach, California, United States

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Orange, California, United States

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Redlands, California, United States

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Santa Ana, California, United States

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Stanford, California, United States

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Temecula, California, United States

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Upland, California, United States

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Denver, Colorado, United States

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Brandon, Florida, United States

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Hialeah, Florida, United States

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Jacksonville, Florida, United States

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Maitland, Florida, United States

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Miami, Florida, United States

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Miami, Florida, United States

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Miami, Florida, United States

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Miami, Florida, United States

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Miami, Florida, United States

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Miami Springs, Florida, United States

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Okeechobee, Florida, United States

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Tampa, Florida, United States

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West Palm Beach, Florida, United States

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Savannah, Georgia, United States

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Boise, Idaho, United States

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Chicago, Illinois, United States

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Chicago, Illinois, United States

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Elgin, Illinois, United States

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Overland Park, Kansas, United States

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Marrero, Louisiana, United States

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Baltimore, Maryland, United States

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Bel Air, Maryland, United States

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Gaithersburg, Maryland, United States

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Boston, Massachusetts, United States

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Bloomfield Hills, Michigan, United States

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Mankato, Minnesota, United States

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Weldon Spring, Missouri, United States

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Las Vegas, Nevada, United States

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Toms River, New Jersey, United States

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Cedarhurst, New York, United States

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Monroe, North Carolina, United States

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Beachwood, Ohio, United States

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Cincinnati, Ohio, United States

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Cincinnati, Ohio, United States

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Westlake, Ohio, United States

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Philadelphia, Pennsylvania, United States

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State College, Pennsylvania, United States

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Memphis, Tennessee, United States

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Austin, Texas, United States

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Austin, Texas, United States

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Beaumont, Texas, United States

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Bellaire, Texas, United States

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Dallas, Texas, United States

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Friendswood, Texas, United States

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Houston, Texas, United States

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Sherman, Texas, United States

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Wichita Falls, Texas, United States

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Draper, Utah, United States

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Rutland, Vermont, United States

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Portsmouth, Virginia, United States

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Everett, Washington, United States

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Countries

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United States

Related Links

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Other Identifiers

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REL-1017-302

Identifier Type: -

Identifier Source: org_study_id