ALTO-100 in Bipolar Disorder With Depression (BD-D)

NCT ID: NCT06656416

Last Updated: 2025-07-16

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE2

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-02

Study Completion Date

2026-10-31

Brief Summary

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The purpose of this study is to assess antidepressant efficacy differences between ALTO-100 and placebo during the Double-Blind period in patients with bipolar disorder I or II with current major depressive episode, when used adjunctively to a mood stabilizer and/or atypical antipsychotic, related to patient characteristics. Additionally, safety, tolerability, and efficacy will be assessed in a subsequent open label treatment period.

Detailed Description

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Conditions

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Bipolar Disorder I or II With a Major Depressive Episode

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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ALTO-100

Participants will receive ALTO-100 40 mg tablet twice daily, from Day 1 to Week 6 in the double blind (DB) treatment period. Eligible participants who enter the open label (OL) treatment period will receive ALTO-100 40 mg tablet twice daily from OL baseline until the end of OL period/early termination visit (Up to 7 weeks).

Group Type EXPERIMENTAL

ALTO-100

Intervention Type DRUG

ALTO-100 40 mg tablet BID

Placebo DB

Participants will receive matching placebo tablet twice daily, from Day 1 to Week 6 in the double blind (DB) treatment period.

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Placebo tablet BID

Interventions

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ALTO-100

ALTO-100 40 mg tablet BID

Intervention Type DRUG

Placebo

Placebo tablet BID

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Have a diagnosis of BD-I or BD-II as well as BD-D
* At baseline, taking a mood stabilizer, lithium (LI) or lamotrigine (LMG) or valproic acid (VPA, any form) or combination of Li + LMG or Li + VPA and/or taking an approved atypical antipsychotic medication (olanzapine, quetiapine, lurasidone, risperidone, ziprasidone, cariprazine, aripiprazole, lumateperone, and asenapine) for at least 6 weeks with no dose modifications in the past 2 weeks
* Willing to comply with all study assessments and procedures
* Must not be pregnant or breastfeeding at time of enrollment or throughout study

Exclusion Criteria

* Evidence of unstable medical condition
* Concurrent use of any prohibited medications or substance use disorder
* Diagnosed psychotic disorder (other than mania or depression)
* Current moderate or severe substance use disorder
* Has a history of hypersensitivity or allergic reaction to ALTO-100 or any of its components/excipients
* Concurrent or recent participation in another clinical trial for mental illness involving an investigational product or device
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Alto Neuroscience

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Adam Savitz, MD, PhD

Role: STUDY_DIRECTOR

Alto Neuroscience

Locations

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Site 6036

Chandler, Arizona, United States

Site Status WITHDRAWN

Site 6000

Phoenix, Arizona, United States

Site Status RECRUITING

Site 6087

Yuma, Arizona, United States

Site Status RECRUITING

6039

Fayetteville, Arkansas, United States

Site Status RECRUITING

6070

Little Rock, Arkansas, United States

Site Status RECRUITING

Site 6081

Imperial, California, United States

Site Status RECRUITING

6069

Los Angeles, California, United States

Site Status RECRUITING

Site 6016

Mather, California, United States

Site Status NOT_YET_RECRUITING

Site 6082

Oceanside, California, United States

Site Status RECRUITING

Site 6102

Riverside, California, United States

Site Status RECRUITING

Site 6112

Colorado Springs, Colorado, United States

Site Status NOT_YET_RECRUITING

Site 6067

Lauderhill, Florida, United States

Site Status WITHDRAWN

Site 6068

Atlanta, Georgia, United States

Site Status RECRUITING

Site 6064

Peachtree Corners, Georgia, United States

Site Status RECRUITING

Site 6151

Baltimore, Maryland, United States

Site Status WITHDRAWN

Site 6076

Bel Air, Maryland, United States

Site Status RECRUITING

Site 6062

Gaithersburg, Maryland, United States

Site Status RECRUITING

Site 6142

Lincoln, Nebraska, United States

Site Status RECRUITING

Site 6144

Las Vegas, Nevada, United States

Site Status RECRUITING

Site 6104

Las Vegas, Nevada, United States

Site Status RECRUITING

Site 6066

Toms River, New Jersey, United States

Site Status RECRUITING

Site 6014

Albuquerque, New Mexico, United States

Site Status NOT_YET_RECRUITING

Site 6078

Albuquerque, New Mexico, United States

Site Status RECRUITING

6065

North Canton, Ohio, United States

Site Status RECRUITING

Site 6075

Westlake, Ohio, United States

Site Status RECRUITING

Site 6072

Houston, Texas, United States

Site Status RECRUITING

Site 6121

Draper, Utah, United States

Site Status NOT_YET_RECRUITING

Countries

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United States

Central Contacts

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Alto Neuroscience

Role: CONTACT

650-200-0412

Other Identifiers

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ALTO-100-211

Identifier Type: -

Identifier Source: org_study_id

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