Clinical Research Directory
Browse clinical research sites, groups, and studies.
PD, PK, and Safety of ALTO-203 in Patients With MDD
Sponsor: Alto Neuroscience
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
Conditions
Interventions
ALTO-203 25 μg
Active, ALTO-203 25 μg
ALTO-203 75 μg
Active, ALTO-203 75 μg
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