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Clinical Trial 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.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT06391593
Study type Interventional
Source Alto Neuroscience
Contact Alto Neuroscience
Phone 650-200-0412
Email clinical@altoneuroscience.com
Status Recruiting
Phase Phase 2
Start date March 25, 2024
Completion date May 2025

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