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Completed Phase 2 Interventional

ALTO-100 in MDD and/or PTSD

ClinicalTrials.gov ID: NCT05117632

Public ClinicalTrials.gov record NCT05117632. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 6, 2026, 8:37 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

An Open-label Study of ALTO-100 in Adults With Major Depressive Disorder and/or Post-traumatic Stress Disorder

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The goal of this study is to collect biologically based data for defining predictors and correlates of the effects of ALTO-100.

Study identification

NCT ID
NCT05117632
Recruitment status
Completed
Study type
Interventional
Phase
Phase 2
Lead sponsor
Alto Neuroscience
Industry
Enrollment
245 participants

Conditions and interventions

Eligibility (public fields only)

Age range
18 Years to 69 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Dec 19, 2021
Primary completion
Nov 30, 2022
Completion
Dec 8, 2022
Last update posted
Nov 30, 2023

2021 – 2022

United States locations

U.S. sites
23
U.S. states
15
U.S. cities
21
Facility City State ZIP Site status
Site 136 Tempe Arizona 85284
Site 139 Little Rock Arkansas 72211
Site 141 Costa Mesa California 92626
Site 118 Fresno California 93703
Site 116 Martinez California 94553
Site 116 Mather California 95655
Site 150 Boca Raton Florida 33431
Site 112 Doral Florida 33172
Site 155 Elgin Illinois 60123
Site 137 Noblesville Indiana 46060
Site 151 Baltimore Maryland 21229
Site 109 Belmont Massachusetts 02478
Site 108 Jackson Mississippi 39216
Site 142 Lincoln Nebraska 68526
Site 144 Las Vegas Nevada 89102
Site 146 Middleburg Heights Ohio 44130
Site 147 Fort Worth Texas 76104
Site 148 Fort Worth Texas 76244
Site 120 Houston Texas 77054
Site 113 Houston Texas 77090
Site 121 Draper Utah 84020
Site 105 Seattle Washington 98104
NTC Seattle (105a) Tacoma Washington 98104

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05117632, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Nov 30, 2023 · Synced Sep 6, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT05117632 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →