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COMPLETED
NCT06391593
PHASE2

PD, PK, and Safety of ALTO-203 in Patients With MDD

Sponsor: Alto Neuroscience

View on ClinicalTrials.gov

Summary

The goal of this clinical trial is to determine the pharmacodynamic effects of ALTO-203 in patients with MDD in a randomized, placebo-controlled, single-dose crossover treatment period. Additionally, safety, tolerability, and PK will be assessed in a subsequent randomized placebo-controlled multi-dose parallel-group treatment period of 28 days. Participants will complete subjective response questionnaires and perform cognitive tasks during the single-dose period, in which participants will receive ALTO-203 25 μg and 75 μg, as well as placebo. During the multiple-dose period, participants will receive either ALTO-203 25 μg, 75 μg , or placebo. Safety will be assessed over the single dose and 28-day multiple dose periods.

Official title: Double-Blind, Single and Multiple Dose Study to Determine Pharmacodynamic Markers, Pharmacokinetic Parameters, and Safety of ALTO-203 in Patients With Major Depressive Disorder

Key Details

Gender

All

Age Range

25 Years - 64 Years

Study Type

INTERVENTIONAL

Enrollment

69

Start Date

2024-03-25

Completion Date

2025-04-21

Last Updated

2026-04-17

Healthy Volunteers

No

Interventions

DRUG

ALTO-203 25 μg

Active, ALTO-203 25 μg

DRUG

ALTO-203 75 μg

Active, ALTO-203 75 μg

DRUG

Placebo

Comparator, Placebo-to-match

Locations (15)

Site 4058

Tucson, Arizona, United States

Site 4082

Oceanside, California, United States

Site 4023

Torrance, California, United States

Site 4059

Clermont, Florida, United States

Site 4005

Orlando, Florida, United States

Site 4031

Atlanta, Georgia, United States

Site 4054

Pikesville, Maryland, United States

Site 4036

Las Vegas, Nevada, United States

Site 4022

Marlton, New Jersey, United States

Site 4134

Princeton, New Jersey, United States

Site 4075

Westlake, Ohio, United States

Site 4040

Austin, Texas, United States

Site 4072

Houston, Texas, United States

Site 4007

Clinton, Utah, United States

Site 4033

Bellevue, Washington, United States