Attention-deficit/Hyperactivity DisorderPhase 4NCT02623114
Attention-deficit/Hyperactivity Disorder Translational Center for Identifying Biomarkers
A Phase 4 study testing methylphenidate and atomoxetine in people with Attention-deficit/Hyperactivity Disorder, run by Seoul National University Childrens Hospital at 1 site in South Korea.
Trial summary
The purpose of this study was to identify genetic, brain morphologic, and environmental biomarkers that contribute to the pathophysiology of attention-deficit/hyperactivity disorder (ADHD). Read more about this study
- Who is it for?
- Ages 6 to 17 yearsHealthy volunteers can take part
- Conditions the study is for
- Attention-deficit/Hyperactivity Disorder
- What is being tested?
- methylphenidate and atomoxetine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 400 participants
- Where
- 1 siteSouth Korea
- Study dates
- May 2012to Mar 2017
- Phase
- Phase 4
- Are there results?
- None posted in the registry
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 17 years
- All sexes
- Healthy volunteers accepted
- Child
Who may be able to join
- A diagnosis of attention-deficit/hyperactivity disorder confirmed using the Kiddie-Schedule for Affective Disorders and Schizophrenia - Present and Lifetime Version- Korean Version (K-SADS-PL-K).
- IQ over 70
Who cannot join
- Intelligence quotient (IQ) < 70
- A hereditary genetic disorder
- A current/past history of brain trauma, organic brain disorder, seizure, or any neurological disorder
- Autism spectrum disorder, communication disorder, or learning disorder
- Schizophrenia or any other childhood-onset psychotic disorder
- Major depressive disorder or bipolar disorder
Show all 9Show fewer
- Tourette's syndrome or chronic motor/vocal tic disorder
- obsessive-compulsive disorder
- A history of methylphenidate treatment lasting more than 1 year or received within the previous 4 weeks
Trial locations and contacts
1 site in 1 country.
Johanna IH Kim, MD contact
South Korea1 site, 1 recruiting
- Recruiting
Seoul National University Children's Hospital
Seoul
Johanna Kim, MD
About this study
Official title: Comprehensive Pathophysiological Study Based on the Core Neurocognitive Deficits and Development of Biological Markers of Treatment Response in Attention Deficit Hyperactivity Disorder
The purpose of this study was to identify genetic, brain morphologic, and environmental biomarkers that contribute to the pathophysiology of attention-deficit/hyperactivity disorder (ADHD).
Read the detailed description
The investigators planned to recruit ADHD and healthy controls from the age of 6 to 17.
Genetic data including dopamine, norepinephrine, serotonin, neurotropic factors, glutamate-related genes will be genotyped.
Environmental disruptors including phthalate and cotinine will be analyzed. Brain MRI data including T1, diffusion tensor imaging (DTI), resting state functional MRI (rsfMRI) will be obtained.
Neuropsychological tests including continuous performance test, Stroop test, Children's color trail test, Wisconsin card sorting test will be conducted.
The investigators plan to identify biomarkers of ADHD using an integrative approach of genetic, environmental, neuroimaging and clinical data.
- Conditions
- Attention-deficit/Hyperactivity Disorder
- Being tested
- methylphenidate, atomoxetine
- Medical subject headings
- Attention Deficit Disorder with Hyperactivity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
methylphenidateDrug
Also called concerta, metadate, penid
The patients received a fixed dose of medication for 2 weeks. The dose was increased according to the clinician's judgment. The patients came to the hospital at week 2,4,6,8,16,24wks, 9, 12,15,18,21,24 months
atomoxetineDrug
Also called strattera
The patients received a fixed dose of medication for 2 weeks. The dose was increased according to the clinician's judgment. The patients came to the hospital at week 2,4,6,8,16,24wks, 9, 12,15,18,21,24 months
| Study group | Role | What they receive |
|---|---|---|
| Methylphenidate | Experimental | ADHD patients with methylphenidate administration Generic names include concerta, metadata and penid. The initial dosage was fixed for 2 weeks and then adjusted according to the clinician's judgement. The patients visited the hospital at week 2,4,6,8,16,24, 9months, 12,15,18,21,24 months. Receives: Drug: methylphenidate |
| Atomoxetine | Experimental | ADHD patients with atomoxetine administration Generic names include strattera. The initial dosage was fixed for 2 weeks and then adjusted according to the clinician's judgement. The patients visited the hospital at week 2,4,6,8,16,24, 9months, 12,15,18,21,24 months. Receives: Drug: atomoxetine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Treatment response measured by decrease in ADHD-RS scale
Changes in the Parent rated ADHD-Rating Scale - IV (ADHD-RS), which is an 18 item scale, with 9 items assessing inattention and 9 items assessing hyperactivity/impulsivity. It is the most widely used scale to measure symptom severity of attention-deficit/hyperactivity disorder.
Measured: 6 months
Treatment response measured by CGI-I score
The Clinical Global Impression - Improvement (CGI-I) scale is a clinician rated scale used to measure improvement in symptoms. It ranges from 1 to 7, with 1 meaning very much improved, and 7 meaning very much worse.
Measured: 6 months
Treatment response measured by changes in CPT score
The continuous performance test (CPT) is an objective measurement of ADHD symptom severity. It is a computerized test and the results are presented in 4 variables : omission errors, commission errors, response time, response time variability.
Measured: 6 months
Secondary outcomes (3)
Treatment response measured by decrease in ADHD-RS scale
The ADHD-RS scale is described in primary outcome measures.
Measured: 1 year
Side effects measured using the side effect rating scale (SRS)
The side effect rating scale (SRS) is a parent rated scale, measuring side effects of multiple domains in the previous 2 week period.
Measured: 1 year
Treatment response measured by CGI-I score
The CGI-I scale is described in primary outcome measures.
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Dec 2015 (estimated)
- Study startMay 2012
- Primary completionAug 2016 (estimated)
- Study completionMar 2017 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Attention-deficit/Hyperactivity DisorderStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 400 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Seoul National University Childrens Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Booog Nyung Kim, Seoul National University Childrens Hospital
- Investigators
- Boong-nyun Kim, MD, PhD, Principal investigator, Seoul National University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02623114
- Sponsor's protocol ID
- 0720151002
- Status last verified
- Dec 2015
- First submitted
- 29 Nov 2015
- Last updated
- 7 Dec 2015
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 7 Dec 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comprehensive Pathophysiological Study Based on the Core Neurocognitive Deficits and Development of Biological Markers of Treatment Response in Attention Deficit Hyperactivity Disorder
- ClinicalTrials.gov ID
- NCT02623114
- Acronym / sponsor ID
- 0720151002
- Conditions
- Attention-deficit/Hyperactivity Disorder
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 400 participants (estimated)
- Lead sponsor
- Seoul National University Childrens HospitalUniversity, hospital or other
- Study start
- May 2012
- Primary completion
- Aug 2016 (estimated)
- Study completion
- Mar 2017 (estimated)
- First posted
- 7 Dec 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study was to identify genetic, brain morphologic, and environmental biomarkers that contribute to the pathophysiology of attention-deficit/hyperactivity disorder (ADHD).
Detailed description
The investigators planned to recruit ADHD and healthy controls from the age of 6 to 17.
Genetic data including dopamine, norepinephrine, serotonin, neurotropic factors, glutamate-related genes will be genotyped.
Environmental disruptors including phthalate and cotinine will be analyzed. Brain MRI data including T1, diffusion tensor imaging (DTI), resting state functional MRI (rsfMRI) will be obtained.
Neuropsychological tests including continuous performance test, Stroop test, Children's color trail test, Wisconsin card sorting test will be conducted.
The investigators plan to identify biomarkers of ADHD using an integrative approach of genetic, environmental, neuroimaging and clinical data.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Methylphenidate | Experimental | Drug: methylphenidateADHD patients with methylphenidate administration Generic names include concerta, metadata and penid. The initial dosage was fixed for 2 weeks and then adjusted according to the clinician's judgement. The patients visited the hospital at week 2,4,6,8,16,24, 9months, 12,15,18,21,24 months. |
| Atomoxetine | Experimental | Drug: atomoxetineADHD patients with atomoxetine administration Generic names include strattera. The initial dosage was fixed for 2 weeks and then adjusted according to the clinician's judgement. The patients visited the hospital at week 2,4,6,8,16,24, 9months, 12,15,18,21,24 months. |
Who may qualify
- Ages
- 6 to 17 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (2 listed)
- A diagnosis of attention-deficit/hyperactivity disorder confirmed using the Kiddie-Schedule for Affective Disorders and Schizophrenia - Present and Lifetime Version- Korean Version (K-SADS-PL-K).
- IQ over 70
Key exclusion criteria (9 listed)
- Intelligence quotient (IQ) < 70
- A hereditary genetic disorder
- A current/past history of brain trauma, organic brain disorder, seizure, or any neurological disorder
- Autism spectrum disorder, communication disorder, or learning disorder
- Schizophrenia or any other childhood-onset psychotic disorder
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| methylphenidateAlso: concerta, metadate, penidThe patients received a fixed dose of medication for 2 weeks. The dose was increased according to the clinician's judgment. The patients came to the hospital at week 2,4,6,8,16,24wks, 9, 12,15,18,21,24 months | Drug | Methylphenidate |
| atomoxetineAlso: stratteraThe patients received a fixed dose of medication for 2 weeks. The dose was increased according to the clinician's judgment. The patients came to the hospital at week 2,4,6,8,16,24wks, 9, 12,15,18,21,24 months | Drug | Atomoxetine |
Primary outcome
Treatment response measured by decrease in ADHD-RS scale
Time frame: 6 months
Changes in the Parent rated ADHD-Rating Scale - IV (ADHD-RS), which is an 18 item scale, with 9 items assessing inattention and 9 items assessing hyperactivity/impulsivity. It is the most widely used scale to measure symptom severity of attention-deficit/hyperactivity disorder.
Treatment response measured by CGI-I score
Time frame: 6 months
The Clinical Global Impression - Improvement (CGI-I) scale is a clinician rated scale used to measure improvement in symptoms. It ranges from 1 to 7, with 1 meaning very much improved, and 7 meaning very much worse.
Treatment response measured by changes in CPT score
Time frame: 6 months
The continuous performance test (CPT) is an objective measurement of ADHD symptom severity. It is a computerized test and the results are presented in 4 variables : omission errors, commission errors, response time, response time variability.
3 secondary outcomes
Treatment response measured by decrease in ADHD-RS scale
Time frame: 1 year
Side effects measured using the side effect rating scale (SRS)
Time frame: 1 year
Treatment response measured by CGI-I score
Time frame: 1 year
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Dec 2015.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Johanna IH Kim, MD contact
Boong-nyun Kim, MD, PhD principal investigator
Seoul National University Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing methylphenidate and atomoxetine in people with Attention-deficit/Hyperactivity Disorder, run by Seoul National University Childrens Hospital at 1 site in South Korea.
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 2 inclusion and 9 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: status not confirmed, as of the sponsor's last update on 7 Dec 2015. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in South Korea. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Johanna IH Kim, MD (iambabyvox@hanmail.net), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Treatment response measured by decrease in ADHD-RS scale (time frame: 6 months). The study lists 3 primary outcomes in all. 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 7 Dec 2015; AzTrials last refreshed its copy on 6 Nov 2026.