A Trial to Evaluate the Efficacy, Safety, and Tolerability of Centanafadine Sustained-release Tablets in Adults With Attention-deficit/Hyperactivity Disorder

Attention Deficit Hyperactivity Disorder Clinical Trial

Official title:

A Phase 3, Randomized, Double-blind, Multicenter, Placebo-controlled, Parallel-group Trial Evaluating the Efficacy, Safety, and Tolerability of Centanafadine Sustained-release Tablets in Adults With Attention-deficit/Hyperactivity Disorder

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03605836
• Other study ID #: 405-201-00014
• Status: Completed
• Phase: Phase 3
• Start date: January 16, 2019
• Est. completion date: May 14, 2020

Study information

• Verified date: September 2021
• Source: Otsuka Pharmaceutical Development & Commercialization, Inc.
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study evaluated the efficacy, safety, and tolerability of centanafadine sustained-release tablets in adults with ADHD. Participants either received a twice-daily dose of centanafadine sustained-release tablets, or twice-daily placebo.

Description:

Screening & Washout Period: up to 28 days Investigational Treatment Period: 49 days Follow-up Period : 7 days or 10 days

Recruitment information / eligibility

• Status: Completed
• Enrollment: 590
• Est. completion date: May 14, 2020
• Est. primary completion date: May 14, 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 55 Years

Eligibility

Inclusion Criteria:

• Participants must meet the Diagnostic and Statistical Manual of Mental Disorders Fifth Edition (DSM-5) criteria for ADHD (including predominantly inattentive presentation, hyperactive presentation, or combined presentation) as confirmed by the Adult ADHD Clinical Diagnostic Scale (ACDS) Version 1.2. To confirm that ADHD is the primary diagnosis, the Mini International Neuropsychiatric Interview (MINI) will be used to identify and exclude other psychiatric conditions which would preclude enrollment.

• Participants who were not receiving any pharmacological treatment for ADHD must have an Adult ADHD Investigator Symptom Rating Scale (AISRS) score of = 28 at screening and baseline. Participants who were receiving pharmacological treatment for ADHD at screening must have a minimum AISRS score of = 22 at screening, and a score of = 28 at baseline.

• All participants must be willing to discontinue all prohibited psychotropic medications starting from the time of signing the informed consent through the 7-day follow-up period. Participants that do not rollover into Trial 405-201-00015 must be willing to discontinue all prohibited psychotropic medications starting from the time of signing the informed consent until after the follow-up telephone call 10 days after the last dose of IMP.

• Participants must have a Clinical Global Impression-Severity of Illness Scale (CGI-S) score of = 4 (= moderate impairment) at baseline.

Exclusion Criteria:

• Participant has a DSM-5 Diagnosis of Other Specified or Unspecified Attention Deficit/Hyperactivity Disorder.

• Participant has a current comorbid psychiatric disorder that either could be expected to require treatment with medications prohibited in this trial, or to confound efficacy or safety assessments. Examples include, but are not limited to, psychotic disorder, bipolar disorder, generalized anxiety disorder, obsessive-compulsive disorder, panic disorder, a current major depressive episode, or posttraumatic stress disorder, as established by the MINI.

• In the opinion of the investigator, participants has not derived significant therapeutic benefit from 2 or more ADHD therapies of 2 different classes (eg, amphetamine and methylphenidate) given with an acceptable dose and duration of adulthood (aged 18 or older). NOTE: If participants has not derived significant therapeutic benefit due to an inability to tolerate side effects, eligibility can be discussed on case-by-case basis with the medical monitor.

• Participants who have a positive alcohol test (via breathalyzer or blood), a positive drug screen assessed prior to the baseline visit for cocaine, other illicit drugs (including marijuana), or prescription or OTC ADHD medications will be early terminated. This includes medications such as opioids or benzodiazepines taken without prescription.

• In the opinion of the investigator, the participants is unable to adhere to the treatment regimen or other requirements outlined in the protocol.

Related Conditions & MeSH terms

• Attention Deficit Disorder
• Attention Deficit Disorder with Hyperactivity
• Attention Deficit Hyperactivity Disorder
• Disease
• Hyperkinesis

Intervention

Drug:
• Centanafadine SR
100 mg, BID, oral tablets

Other:
• Placebo
BID, oral tablet

Drug:
• Centanafadine SR
200 mg, BID, oral tablets

Locations

Country	Name	City	State
United States	For additional information regarding sites, contact 844-687-8522	Orlando	Florida

Sponsors (1)

Lead Sponsor	Collaborator
Otsuka Pharmaceutical Development & Commercialization, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Adverse Event Reporting	Frequency and severity of treatment-emergent adverse events (TEAEs) will be assessed to determine safety and tolerability of centanafadine SR tablets	Up to 59 days
Other	ADHD Impact Module - Adult (AIM-A)	Scale composed of 3 subscales with a maximum score of 100. A lower score indicates a worse outcome. Exploratory endpoint; comparison of baseline score to other points throughout the study.	Up to 42 days
Other	Adult ADHD Self Report Scale (ASRS)	An 18 question report, total score ranges from 0 to 124. A higher score denotes a worse outcome. Exploratory endpoint; comparison of baseline score to other points throughout the study	Up to 42 days
Other	AISRS	Change from baseline total score compared to every scheduled visit. Each subscale is composed of 9 items each. Scores can range from 0 to 27, with a higher score representing a worse outcome. Change from baseline scores are compared to every scheduled visit score.	Up to 42 days
Primary	Change From Baseline in ADHD Investigator Symptom Rating Scale (AISRS) Score at Day 42	The AISRS is an 18-item clinician rating scale to evaluate individual ADHD symptoms on a scale of 0 (none) to 3 (severe). The total sum ranges from 0 (no ADHD symptoms) to 54 (extremely severe ADHD symptoms). Mixed-effect model repeated measure (MMRM) was used for the analysis.	Baseline and Day 42
Secondary	Change From Baseline in Clinical Global Impression-Severity of Illness Scale (CGI-S) Score at Day 42	CGI-S is an observer-rated scale used to measure symptom severity with a total score range of 0 to 7 where 1 = normal, not at all ill; 2 = borderline mentally ill; 3 = mildly ill; 4 = moderately ill; 5 = markedly ill; 6 = severely ill; and 7 = among the most extremely ill participants. A negative change from Baseline indicates improvement. MMRM was used for the analysis.	Baseline and Day 42