A Study to Assess the Effectiveness and Safety of Clonidine Extended-Release OnydaTM XR in Children With ADHD and ODD

NCT07044609 | Not Yet Recruiting Phase 4 FDA Drug

• 1 other identifier: ADHD-01
• Study Type: interventional
• Target: 162
• Locations: 0 countries
• Sites: N/A

Brief Summary

This is a study to see how safe and effective OnydaTM XR is to treat Attention-Deficit/Hyperactivity Disorder (ADHD) in children aged 6 to 12 years who also have Oppositional Defiant Disorder (ODD). The trial will consist of a screening period of up to 28 days; a 35-day double-blind treatment period that includes a one week of the lowest dose of medication (0.1mg) given at bedtime, then three weeks at 0.2 mg, then one week at 0.1 mg and a follow-up phone call one week after stopping study medication. During the screening period, we will determine whether participants qualify to enroll in the study. Approximately 162 boys and girls aged 6 to 12 years, who are currently diagnosed with ADHD and ODD, are planned to be screened in order to complete approximately 124 subjects. Key Inclusion/Exclusion Criteria Participants will have a main diagnosis of ADHD and comorbid ODD based on a structured interview. They will also be required to have significant problems because of their ADHD and be in good health. They will not be able to take other medications for ADHD or any other mental health problems during the study. At the screening visit, participants and their parents will be asked about ADHD, ODD and other mental health symptoms. They will also give blood and urine samples, and complete an electrocardiogram and physical exam. Blood pressure and pulse rate will also be obtained. Parents will complete questionnaires about ADHD, ODD, and sleep. During the second visit, the doctor will ensure that participants continue to qualify for the study. Parents and participants will complete questionnaires. Parents will be shown how to dose the study medication. It is a liquid suspension. Participants will be seen weekly and will be asked about changes in health, new medications and parents will complete questionnaires while participants have blood pressure and pulse rate checked. At the last in-clinic study visit, participants will also have blood and urine samples taken and, complete an electrocardiogram and undergo a physical exam. Parents will complete questionnaires. One week after the last in-clinic visit

Conditions

Attention-deficit/Hyperactivity Disorder; Oppositional Defiant Disorder in Children

Keywords

ADHD, ODD, oppositional defiant disorder

Outcome Measures

Primary Outcomes (1)

• Change in the ADHD-RS-5 (Investigator Scored) Total Score from Visit 2 (Baseline) to Visit 6 (End of Double-blind Treatment [0.2 mg treatment]).

  Change in the ADHD-RS-5 (Investigator Scored) Total Score from Visit 2 (Baseline) to Visit 6 (End of Double-blind Treatment \[0.2 mg treatment\]).

  4 weeks

Study Arms (2)

Extended-release clonidine oral suspension

ACTIVE COMPARATOR

Participants in this arm will start on 0.1 mg of clonidine extended-release oral suspension and titrate to 0.2 mg of clonidine extended release oral suspension.

Drug: Clonidine extended release oral suspension

Placebo suspension

PLACEBO COMPARATOR

Participants in this arm will receive a placebo oral-suspension throughout the study.

Drug: Placebo

Interventions

Clonidine extended release oral suspension DRUG

The study is blinded and the active clonidine extended-release oral suspension will look just like the placebo comparator.

Extended-release clonidine oral suspension

Placebo DRUG

Placebo suspension

Placebo suspension

Eligibility Criteria

• Age: 6 Years - 12 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17)

You may qualify if:

• Male and female subjects aged 6 to 12 years of age inclusive at time of consent
• Meets DSM-5 criteria for ADHD, combined, hyperactive/impulsive or inattentive presentation using a clinical interview by an experienced clinician and confirmed with the Mini-International Neuropsychiatric Interview for children and adolescents (MINI-KID)
• Meets DSM-5 criteria for Oppositional Defiant Disorder confirmed with the MINI-KID
• The subject has a parent or legal guardian who will give written informed consent for the subject to participate in the study
• Subject and parent/legal guardian must be able to speak, read, write, and understand English
• Subject and parent/legal guardian must agree to comply with all protocol requirements
• ADHD-RS-5 score of ≥28 at Screening and Baseline if not taking ADHD medications. If taking ADHD medication, must have ADHD-RS-5 score of ≥28 after washout at Baseline
• Subject has a CGI-S score of ≥4 at Screening if not taking ADHD medication. If taking ADHD medication must have CGI-S score of ≥4 at Baseline
• Subject must live with primary caretaker/rater
• Sitting systolic and diastolic blood pressure below the 95th percentile for age, gender, and height
• Subject is functioning at age-appropriate level intellectually based on investigator's opinion
• If a female has experienced menarche, she must have a negative serum beta human chorionic gonadotropin (hCG) pregnancy test at Screening, a negative urine pregnancy test at Baseline, and agree to be abstinent from sexual activity that could result in pregnancy, or use acceptable contraceptives throughout the entire study
• Must be able to discontinue stimulants 7 days prior to Baseline and nonstimulants 14 days prior to Baseline

You may not qualify if:

• Subject has a current severe comorbid psychiatric condition (except oppositional defiant disorder \[ODD\]) that is controlled (requiring a prohibited medication or behavioral modification program) or uncontrolled. These conditions include comorbid disorders, such as bipolar illness, psychosis, autism spectrum disorder, post-traumatic stress disorder, obsessive-compulsive disorder, substance use disorder, or conduct disorder, that in the opinion of the Investigator, contraindicate treatment with OnydaTM XR, or confound efficacy or safety assessments
• Use of another investigational drug in the 30 days prior to screening
• Use of anticonvulsants, antidepressants, or antipsychotics in the 30 days prior to screening
• History (in the past 12 months) or presence of clinically significant cardiovascular, cerebrovascular, renal, hepatic, gastrointestinal, pulmonary, immunological, hematological, endocrine, or neurological disease, that in the opinion of the investigator, could put the subject at risk if he/she participates in the trial, or confound study results
• History of presence of suicidal ideation or self-injurious behavior
• Subject has orthostatic hypotension or history of hypertension
• Subject has clinically significant ECG findings as judged by the investigator.
• Subject has a QTc-Fridericia (QTc-F) \> 450 ms in males or \> 470 ms in females at screening
• Subject has participated in another clinical trial within 30 days prior to screening
• Subject has an allergy or intolerance to clonidine or OnydaTM XR
• Subject has clinically significant abnormal laboratory values at screening
• Subject has a positive drug screen at Screening, except for ADHD medications with a valid prescription
• Subject has a positive drug screen at Baseline
• Subject has a history of a seizure disorder, except for children who have had febrile seizures prior to age 5 years
• Subjects who have been treated with clonidine or guanfacine in the past 30 days

Sponsors & Collaborators

• Las Vegas Medical Research, LLC DBA Vector Clinical Trials: lead
• Tris Pharma, Inc.: collaborator

MeSH Terms

Conditions

Attention Deficit Disorder with Hyperactivity; Oppositional Defiant Disorder

Condition Hierarchy (Ancestors)

Attention Deficit and Disruptive Behavior Disorders; Neurodevelopmental Disorders; Mental Disorders

Study Officials

• Ann Childress, MD

  Vector Clinical Trials

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Ann Childress, MD

CONTACT

702-750-0000; drann87@aol.com

Kylynn Luna, BA

CONTACT

702-750-0000; kylynnl@vectorclinicaltrials.com

Study Design

• Study Type: interventional
• Phase: phase 4
• Allocation: RANDOMIZED
• Masking: QUADRUPLE
• Who Masked: PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
• Masking Details: Clonidine extended-release suspension and placebo suspension look alike. An unblinded pharmacist will dispense the drug.
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Model Details: This is a randomized, double-blind, placebo-controlled, parallel-group study. Subjects will be assigned 1:1 to drug or placebo.

Study Record Dates

• First Submitted: June 23, 2025
• First Posted: July 1, 2025
• Study Start: July 1, 2025
• Primary Completion (Estimated): December 1, 2026
• Study Completion (Estimated): December 1, 2026
• Last Updated: July 1, 2025

Record last verified: 2025-06

Data Sharing

• IPD Sharing: Will not share