A Trial of Centanafadine Efficacy and Safety in Children With Attention-deficit/ Hyperactivity Disorder (ADHD)

April 1, 2026 updated by: Otsuka Pharmaceutical Development & Commercialization, Inc.

A Phase 3, Multicenter, Randomized, Double-blind, Placebo-controlled Trial to Determine the Efficacy and Safety of Once Daily Centanafadine Capsules for the Treatment of Children With Attention-deficit/Hyperactivity Disorder (ADHD)

This trial will be conducted to evaluate the efficacy of centanafadine once daily (QD) extended release (XR) versus placebo in the treatment of child subjects (4 to 12 years, inclusive) with ADHD. The trial will consist of a screening period, a double-blind treatment period, and follow-up period.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

574

Phase

  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • New York
      • New York, New York, United States, 10012
        • For additional information regarding sites, contact 844-687-8522

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

4 years to 12 years (Child)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Males and females aged 4 to 12 years (inclusive) at the time of informed consent/assent.
  • A primary diagnosis of ADHD based on Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5) diagnosis criteria as confirmed with the Mini International Neuropsychiatric Interview for Children and Adolescents (MINI-KID).
  • A minimum symptoms total raw score of ≥ 28 on the ADHD-RS-5 at baseline for all subjects.
  • A score of 4 or higher on the CGI-S-ADHD at baseline.
  • Subjects aged 4 or 5 years only: has failed adequate psychotherapy or in the investigator's opinion, is severe enough to require pharmacotherapy in the absence of prior psychotherapy.

Exclusion Criteria:

  • Comorbid diagnosis of: Tourette's Disorder, Generalized Anxiety Disorder that is severe enough to interfere with trial procedures, Panic Disorder, Conduct Disorder, Psychosis, Post-traumatic Stress Disorder, Bipolar Disorder, Autism Spectrum Disorder, Oppositional Defiant Disorder that is severe enough to interfere with trial conduct (allowed if it is not the primary focus of treatment), Obsessive-Compulsive Disorder that is severe enough to interfere with trial conduct (allowed if it is not the primary focus of treatment), or major depressive disorder (MDD) with current major depressive episode.
  • A significant risk of committing suicide based on history and the investigator's clinical judgment, or routine psychiatric status examination, Current suicidal behavior, Imminent risk of injury to self, Active suicidal ideation. A history of suicidal behavior (over the last 6 months).
  • Body mass index (BMI) ≥ 40 kg/m2 or ≤ 5th percentile for age and gender based on US Centers for Disease Control and Prevention (CDC) criteria.
  • Has initiated, changed, or discontinued receiving psychological interventions for ADHD within the 30 days before the screening visit, or is anticipated to start new treatment during the trial.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Weight Based High Dose Centanafadine Capsules

Cohort 1, (6 to 12 years of age)

Cohort 2, (4 to 5 years of age)

High dose - weight-based dosing
Drug: centanafadine capsule
capsule
Other Names:
  • EB-1020
  • centanafadine
  • centanafadine XR
Experimental: Weight Based Low Dose Centanafadine Capsules

Cohort 1, (6 to 12 years of age)

Low dose - weight-based dosing
Drug: centanafadine capsule
capsule
Other Names:
  • EB-1020
  • centanafadine
  • centanafadine XR
Placebo Comparator: Matching Placebo

Cohort 1 and Cohort 2

Children (4 to 12 years of age, inclusive) to receive Placebo capsules will be matching in size and color.
Other: placebo capsule
capsule
Other Names:
  • placebo comparator
  • matching placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Attention-Deficit/Hyperactivity Disorder Rating Scale Version 5 (ADHD-RS-5) Change from baseline in the ADHD-RS-5 symptoms total raw score (investigator interview with informant) at Week 6
Time Frame: From baseline to week 6
From baseline to week 6

Secondary Outcome Measures

Outcome Measure
Time Frame
Conners-3 Parent Short- Change from baseline in Conners-3 Parent Short at Week 6
Time Frame: From baseline to week 6
From baseline to week 6
Clinical Global Impression - Severity - Attention-Deficit/Hyperactivity Disorder (CGI-S-ADHD) change from baseline in CGI-S-ADHD at Week 6
Time Frame: From baseline to week 6
From baseline to week 6

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Otsuka Pharmaceutical Development & Commercialization, Inc.

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 11, 2022

Primary Completion (Actual)

March 17, 2025

Study Completion (Actual)

March 17, 2025

Study Registration Dates

First Submitted

June 16, 2022

First Submitted That Met QC Criteria

June 16, 2022

First Posted (Actual)

June 22, 2022

Study Record Updates

Last Update Posted (Actual)

April 13, 2026

Last Update Submitted That Met QC Criteria

April 1, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 405-201-00021

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Anonymized Individual participant data (IPD) that underlie the results of this study will be shared with researchers to achieve aims pre-specified in a methodologically sound research proposal. Small studies with less than 25 participants are excluded from data sharing.

IPD Sharing Time Frame

Data will be available after marketing approval in global markets or beginning 1-3 years following article publication. There is no end date to the availability of the data.

IPD Sharing Access Criteria

Otsuka will share data on the Vivli data sharing platform which can be found here: https://vivli.org/ourmember/Otsuka/

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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