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Attention-deficit/Hyperactivity DisorderPhase 4NCT07044609

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

A Phase 4 study testing Clonidine extended release oral suspension in people with Attention-deficit/Hyperactivity Disorder and Oppositional Defiant Disorder in Children, run by Las Vegas Medical Research, LLC DBA Vector Clinical Trials.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
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Trial 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). Read more about this study

Who is it for?
Ages 6 to 12 years
What is being tested?
Clonidine extended release oral suspension
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
162 participants
Where
No sites listed yet
Study dates
Jul 2025to Dec 2026
Phase
Phase 4
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 6 to 12 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • 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
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  • 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

Who cannot join

  • 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
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  • 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 is currently considered a suicide risk, has previously made a suicide attempt, or has active suicidal ideation based on the Columbia Suicide Severity Rating Scale. Specifically, any positive response on C-SSRS items 4 or 5 currently at screening, or in the past 12 months, is exclusionary
  • 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
  • History of failure to respond to clonidine or guanfacine
  • Subject started psychotherapy less than 30 days prior to screening
  • -

Trial locations and contacts

No sites are listed yet. Contact the study team or a site near you to ask about taking part.

Ann Childress, MD contact

702-750-0000

drann87@aol.com

About this study

Official title: A Phase IV, Randomized, Placebo-Controlled, Double-Blind Study to Assess the Effectiveness and Safety of Clonidine Extended-Release (OnydaTM XR) in Children Aged 6 to 12 Years With Attention-Deficit/ Hyperactivity Disorder and Oppositional Defiant Disorder

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.

Read more

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

Read the detailed description

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 primary objective of this study is to establish that an optimal dose of OnydaTM XR will result in a significant reduction in attention-deficit/hyperactivity disorder (ADHD) symptoms compared to placebo in children aged 6 to 12 years.

The primary efficacy measure is the 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])

The key secondary objectives include:

  • Change on the Conners 4TM Oppositional Defiant Disorder Symptom Scale from Visit 2 to Visit 6
  • Change from Visit 2 Baseline to Visit 6 in ADHD-RS-5 Hyperactivity/Impulsivity and Inattention subscale scores

Other secondary measures include:

  • Clinical Global Impression Severity Scale change from Visit 2 (Baseline) to Visit 6 (End of Double-blind Treatment [ 0.2 mg treatment])
  • Clinical Global Impression Change Scale change from Visit 2 (Baseline) to Visit 6 (End of Double-blind Treatment [ 0.2 mg treatment])
  • Children's Sleep Habits Questionnaire (CSHQ)

Safety and tolerability of OnydaTM XR:

  • Changes in Blood Pressure, Pulse, Height, and Weight
  • Columbia Suicide Severity Rating Scale (C-SSRS)

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 there will be a phone call to the participant to determine if any adverse events resolved.

Being tested
Clonidine extended release oral suspension, Placebo
Keywords
ADHD, ODD, oppositional defiant disorder
Medical subject headings
Attention Deficit Disorder with Hyperactivity, Oppositional Defiant Disorder

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Clonidine extended release oral suspensionDrug

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

  • PlaceboDrug

    Placebo suspension

Study groups in NCT07044609
Study groupRoleWhat they receive
Extended-release clonidine oral suspensionActive comparatorParticipants 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.
Receives: Drug: Clonidine extended release oral suspension
Placebo suspensionPlacebo comparatorParticipants in this arm will receive a placebo oral-suspension throughout the study.
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  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]).

    Measured: 4 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted1 Jul 2025
  2. Study startJul 2025 (estimated)
  3. Primary completionDec 2026 (estimated)
  4. Study completionDec 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
This is a randomized, double-blind, placebo-controlled, parallel-group study. Subjects will be assigned 1:1 to drug or placebo.
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
162 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07044609
Sponsor's protocol ID
ADHD-01
Status last verified
Jun 2025
First submitted
23 Jun 2025
Last updated
1 Jul 2025
Results posted
No
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No: This is a single site study.

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Clonidine extended release oral suspension in people with Attention-deficit/Hyperactivity Disorder and Oppositional Defiant Disorder in Children, run by Las Vegas Medical Research, LLC DBA Vector Clinical Trials.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 13 inclusion and 19 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: opening soon, as of the sponsor's last update on 1 Jul 2025. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Ann Childress, MD (702-750-0000, drann87@aol.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

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]). (time frame: 4 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 Jul 2025.

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