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NCT07484217PHASE3Recruiting

Clinical Assessment of Response in the Treatment of Depression With Daytime Sleepiness Using Solriamfetol

Axsome Therapeutics, Inc.

Start Date

2/23/2026

Completion Date

12/1/2028

Summary

CLARITY (Clinical Assessment of Response in the Treatment of Depression with Daytime Sleepiness Using Solriamfetol) is a Phase 3, double-blind, placebo-controlled, multicenter randomized withdrawal trial in patients with major depressive disorder (MDD) with excessive daytime sleepiness (EDS) symptoms consisting of an open-label solriamfetol treatment period and a randomized, double-blind treatment period.

Detailed Description

The study will consist of a screening period, an open label solriamfetol treatment period, a double-blind randomized withdrawal period, and a follow-up period. Eligible subjects will be treated with open-label solriamfetol and monitored for clinical response. Subjects achieving clinical response will be randomized into the double-blind randomized withdrawal period in a 1:1 ratio to either continued treatment with solriamfetol or to switch to placebo, for the remainder of the double-blind period or until they experience relapse of depressive symptoms.

Eligibility Criteria

Age Range: 18 years to 65 years

Inclusion Criteria: * Currently meets the DSM-5 criteria for MDD without psychotic features, based on the SCID-5-CT * Excessive daytime sleepiness symptoms * Able to comply with study procedures * Male or female, aged 18 to 65 years inclusive Exclusion Criteria: * Any clinically significant medical (e.g., OSA, narcolepsy), behavioral, or psychiatric disorder, other than MDD with EDS symptoms * Unable to comply with study procedures * Medically inappropriate for study participation in the opinion of the investigator

Interventions

DRUG

Solriamfetol 150 MG

DRUG

Placebo

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Conditions

Major Depressive Disorder With Excessive Daytime Sleepiness Symptoms

Locations

Clinical Research Site

Tucson, Arizona 85704

United States

Clinical Research Site

Bellflower, California 90706

United States

Clinical Research Site

Chino, California 91710

United States

Clinical Research Site

Glendale, California 91206

United States

Clinical Research Site

Imperial, California 92251

United States

Clinical Research Site

Los Angeles, California 90015

United States

Clinical Research Site

Oceanside, California 92056

United States

Clinical Research Site

Redlands, California 92374

United States

Clinical Research Site

San Diego, California 92123

United States

Clinical Research Site

Sherman Oaks, California 91403

United States

Clinical Research Site

Walnut Creek, California 94596

United States

Clinical Research Site

Jacksonville, Florida 32256

United States

Clinical Research Site

Miami, Florida 33122

United States

Clinical Research Site

Miami, Florida 33176

United States

Clinical Research Site

Atlanta, Georgia 30331

United States

Clinical Research Site

Norcross, Georgia 30092

United States

Clinical Research Site

Snellville, Georgia 30078

United States

Clinical Research Site

Chicago, Illinois 60634

United States

Clinical Research Site

Pikesville, Maryland 21208

United States

Clinical Research Site

Springfield, Massachusetts 01103

United States

Clinical Research Site

Las Vegas, Nevada 89102

United States

Clinical Research Site

Las Vegas, Nevada 89119

United States

Clinical Research Site

Cherry Hill, New Jersey 08002

United States

Clinical Research Site

Toms River, New Jersey 08755

United States

Clinical Research Site

Brooklyn, New York 11235

United States

Clinical Research Site

New York, New York 10036

United States

Clinical Research Site

New York, New York 10128

United States

Clinical Research Site

Staten Island, New York 10314

United States

Clinical Research Site

The Bronx, New York 10464

United States

Clinical Research Site

Cincinnati, Ohio 45215

United States

Clinical Research Site

Cincinnati, Ohio 45245

United States

Clinical Research Site

Edmond, Oklahoma 73013

United States

Clinical Research Site

Oklahoma City, Oklahoma 73116

United States

Clinical Research Site

Portland, Oregon 97210

United States

Clinical Research Site

Memphis, Tennessee 38119

United States

Clinical Research Site

Austin, Texas 78759

United States

Clinical Research Site

Bellaire, Texas 77401

United States

Clinical Research Site

Dallas, Texas 75243

United States

Clinical Research Site

Houston, Texas 77007

United States

Clinical Research Site

San Antonio, Texas 78240

United States