Attention Deficit/Hyperactivity DisorderNCT01682915
Structural and Functional Connectivity of Frontostriatal and Frontoparietal Networks as Endophenotypes of ADHD
An observational study of Attention Deficit/Hyperactivity Disorder, run by National Taiwan University Hospital at 1 site in Taiwan.
Trial summary
Attention deficit/hyperactivity disorder (ADHD) is a common, impairing, clinically and genetically heterogeneous neuropsychiatric disorder with lifelong executive dysfunctions. The ultimate goal of this 3-year case-control imaging genomic study with unaffected siblings and typically developing (TD) children as… Read more about this study
- Who is it for?
- Ages 12 to 20 years
- Conditions the study is for
- Attention Deficit/Hyperactivity Disorder
- How many people
- 240 participants
- Where
- 1 siteTaiwan
- Study dates
- 1 Aug 2012to 31 Jul 2015
- Phase
- Observational
- 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 12 to 20 years
- All sexes
- No healthy volunteers
- Child, Adult
Study population: The sample (n=240, 8 groups, ages 10-20, IQ > 80) consists of (1) 30 ADHD probands with DAT1 variants, (2) 30 same-sex unaffected siblings, (3) 30 ADHD probands without DAT1 gene variants, who were age-, sex-, and IQ-matched to Group 1, (4) 30 same-sex unaffected siblings of Group 3, (5) 30 age-, sex- and IQ-matched TD controls for each of 4 groups (Groups 1, 2, 3 \& 4).
Who may be able to join
- ADHD+DAT1 groups: Subjects aged 12-20, who have clinical diagnosis of ADHD according to the DSM-IV diagnostic criteria and who have risk alleles of DAT1 gene, regardless of having same-sex unaffected siblings or the drug-naïve status.
- ADHD drug-naïve groups: Subjects aged 12-20, who have clinical diagnosis of ADHD according to the DSM-IV diagnostic criteria, who do not have risk alleles of DAT1 gene, who have the same-sex unaffected siblings and who have never been treated by medication for treating ADHD.
Who cannot join
- These subjects will be excluded from the study if they have any of the following criteria: (1) Comorbidity with DSM-IV-TR diagnosis of pervasive developmental disorder, schizophrenia, schizoaffective disorder, delusional disorder, other psychotic disorder, organic psychosis, schizotypal personality disorder, bipolar disorder, depression, severe anxiety disorders or substance use; (2) With neurodegenerative disorder, epilepsy, involuntary movement disorder, congenital metabolic disorder, brain tumor, history of severe head trauma, and history of craniotomy; (3)With visual or hearing impairments, or motor disability which may influence the process of MRI assessment; and (4) Full-scale IQ lower than 80. In addition, if the control subjects have ODD or CD, they will be excluded.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Structural and Functional Connectivity of Frontostriatal and Frontoparietal Networks as Endophenotypes of Attention-deficit Hyperactivity Disorder
Attention deficit/hyperactivity disorder (ADHD) is a common, impairing, clinically and genetically heterogeneous neuropsychiatric disorder with lifelong executive dysfunctions. The ultimate goal of this 3-year case-control imaging genomic study with unaffected siblings and typically developing (TD) children as controls is to identify useful imaging endophenotype for ADHD by investigating the structural connectivity, as assessed by diffusion spectrum imaging (DSI), and functional connectivity, as assessed by resting-state fMRI (rsfMRI) of brain regions related to cognitive/executive controls with regards to the ADHD status and the presence of dopamine transporter gene variants (DAT1).
Specific Aims:
- to validate the executive functions, visuospatial memory, and structural and functional connectivity in frontostriatal, and frontoparietal circuitries as effective neurocognitive endophenotypes;
- to correlate the data from structural and functional connectivity, neuropsychology, and ADHD core symptoms stratifying by the presence of ADHD, proband-unaffected sibling dyads, and the presence of DAT1 variant; and
- To investigate reported candidate genes, in addition to DAT1 variant, related to dopamine and noradrenergic neurotransmitter systems in the association with neurocognitive endophenotypes such as DRD1, DRD2, DRD4, DRD5, DBH, MAO-A, ADRA2A, ADRA2C, NET, and COMT.
Read the detailed description
The sample (n=240, 8 groups, ages 10-20, IQ > 80) consists of (1) 30 ADHD probands with DAT1 variants, (2) 30 same-sex unaffected siblings, (3) 30 ADHD probands without DAT1 gene variants, who were age-, sex-, and IQ-matched to Group 1, (4) 30 same-sex unaffected siblings of Group 3, (5) 30 age-, sex- and IQ-matched TD controls for each of 4 groups (Groups 1, 2, 3 \& 4).
The assessments include psychiatric interviews, self-administered questionnaires (CBCL and SNAP-IV for ADHD and behavioral problems; the SAICA for school and social function), neurocognitive assessments (WISC-III-R or WAIS-III for intelligence, Conner's CPT for sustained attention, inhibition, and vigilance, CANTAB for executive functions and visuo-spatial memory), and MRI assessments (Structural MRI, DSI and rsfMRI).
Brain Imaging: (1) Structural MRI (T1- and T2-weighted images), DSI and rsfMRI data will be acquired on a 3T MRI system with a 32-channel head coil. DSI employs a pulsed-gradient spin-echo echo planar imaging (EPI) sequence by applying 102 diffusion gradient vectors and the maximum diffusion sensitivity = 4000 s/mm2, and rsfMRI is a 6-minute scan using a gradient-echo EPI sequence with 180 volumes. (2) Structural connectivity analysis: DSI tractography will be performed using in-house software (DSI studio, http://dsi-studio.labsolver.org/Home). Tracts-of-interest in the frontostriatal circuit and the frontoparietal circuit will be identified, and tract-specific analysis will be used to analyze the microstructural integrity along individual tract bundles. (3) Functional connectivity analysis: SPM8 program and in-house MATLAB codes will be used for analyses of rsfMRI data. Region-of-interests (ROIs) will be placed in the nodes of the corresponding circuits according to an anatomical template (WFU_PickAtlas 3.03). These ROIs will serve for tract determination in the tractography procedure and for seed regions in which BOLD signals are extracted for regression analysis among nodes.
- Conditions
- Attention Deficit/Hyperactivity Disorder
- Keywords
- ADHD, endophenotype, executive function, diffusion spectrum imaging, resting-state fMRI, frontostriatal and frontoparietal circuitries, DAT1
- 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.
| Study group | Role | What they receive |
|---|---|---|
| Group 1: ADHD+DAT1, Probands | 30 ADHD probands with DAT1 variants | |
| Group 2: ADHD+DAT1, Unaffected sibling | 30 same-sex unaffected siblings of Group 1 | |
| Group 3: ADHD Drug-naïve, Probands | 30 ADHD probands without DAT1 gene variants, who were age-, sex-, and IQ-matched to Group 1 | |
| Group 4: ADHD Drug-naïve, unaffected sibling | 30 same-sex unaffected siblings of Group 3 | |
| Matched controls | 30 age-, sex- and IQ-matched TD controls for each of 4 groups |
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted11 Sep 2012 (estimated)
- Study start1 Aug 2012
- Primary completion31 Jul 2015
- Study completion31 Jul 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Attention Deficit/Hyperactivity DisorderStudies of the same condition, open and under way.
- More trials run by National Taiwan University HospitalThe sponsor's other registered studies.
- 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
- Observational
- Observational model
- Other
- Time perspective
- Other
- Enrolment
- 240 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Taiwan University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Statistical Center, NTUHCTC, National Taiwan University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01682915
- Sponsor's protocol ID
- 201204071RIC
- Status last verified
- Sep 2021
- First submitted
- 7 Sep 2012
- Last updated
- 2 Sep 2021
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Lin HY, Kessler D, Tseng WI, Gau SS. Increased Functional Segregation Related to the Salience Network in Unaffected Siblings of Youths With Attention-Deficit/Hyperactivity Disorder. J Am Acad Child Adolesc Psychiatry. 2021 Jan;60(1):152-165. doi: 10.1016/j.jaac.2019.11.012. Epub 2019 Nov 26.
PubMed 31778781Chiang HL, Hsu YC, Shang CY, Tseng WI, Gau SS. White matter endophenotype candidates for ADHD: a diffusion imaging tractography study with sibling design. Psychol Med. 2020 May;50(7):1203-1213. doi: 10.1017/S0033291719001120. Epub 2019 May 22.
PubMed 31115278
Study at a glance
From the registry record, last updated by the sponsor on 2 Sep 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Structural and Functional Connectivity of Frontostriatal and Frontoparietal Networks as Endophenotypes of Attention-deficit Hyperactivity Disorder
- ClinicalTrials.gov ID
- NCT01682915
- Acronym / sponsor ID
- 201204071RIC
- Conditions
- Attention Deficit/Hyperactivity Disorder
- Keywords
- ADHD, endophenotype, executive function, diffusion spectrum imaging, resting-state fMRI, frontostriatal and frontoparietal circuitries, DAT1
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 240 participants (actual)
- Lead sponsor
- National Taiwan University HospitalUniversity, hospital or other
- Study start
- 1 Aug 2012 (actual)
- Primary completion
- 31 Jul 2015 (actual)
- Study completion
- 31 Jul 2015 (actual)
- First posted
- 11 Sep 2012 (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.
Attention deficit/hyperactivity disorder (ADHD) is a common, impairing, clinically and genetically heterogeneous neuropsychiatric disorder with lifelong executive dysfunctions. The ultimate goal of this 3-year case-control imaging genomic study with unaffected siblings and typically developing (TD) children as controls is to identify useful imaging endophenotype for ADHD by investigating the structural connectivity, as assessed by diffusion spectrum imaging (DSI), and functional connectivity, as assessed by resting-state fMRI (rsfMRI) of brain regions related to cognitive/executive controls with regards to the ADHD status and the presence of dopamine transporter gene variants (DAT1).
Specific Aims:
- to validate the executive functions, visuospatial memory, and structural and functional connectivity in frontostriatal, and frontoparietal circuitries as effective neurocognitive endophenotypes;
- to correlate the data from structural and functional connectivity, neuropsychology, and ADHD core symptoms stratifying by the presence of ADHD, proband-unaffected sibling dyads, and the presence of DAT1 variant; and
- To investigate reported candidate genes, in addition to DAT1 variant, related to dopamine and noradrenergic neurotransmitter systems in the association with neurocognitive endophenotypes such as DRD1, DRD2, DRD4, DRD5, DBH, MAO-A, ADRA2A, ADRA2C, NET, and COMT.
Detailed description
The sample (n=240, 8 groups, ages 10-20, IQ > 80) consists of (1) 30 ADHD probands with DAT1 variants, (2) 30 same-sex unaffected siblings, (3) 30 ADHD probands without DAT1 gene variants, who were age-, sex-, and IQ-matched to Group 1, (4) 30 same-sex unaffected siblings of Group 3, (5) 30 age-, sex- and IQ-matched TD controls for each of 4 groups (Groups 1, 2, 3 \& 4).
The assessments include psychiatric interviews, self-administered questionnaires (CBCL and SNAP-IV for ADHD and behavioral problems; the SAICA for school and social function), neurocognitive assessments (WISC-III-R or WAIS-III for intelligence, Conner's CPT for sustained attention, inhibition, and vigilance, CANTAB for executive functions and visuo-spatial memory), and MRI assessments (Structural MRI, DSI and rsfMRI).
Brain Imaging: (1) Structural MRI (T1- and T2-weighted images), DSI and rsfMRI data will be acquired on a 3T MRI system with a 32-channel head coil. DSI employs a pulsed-gradient spin-echo echo planar imaging (EPI) sequence by applying 102 diffusion gradient vectors and the maximum diffusion sensitivity = 4000 s/mm2, and rsfMRI is a 6-minute scan using a gradient-echo EPI sequence with 180 volumes. (2) Structural connectivity analysis: DSI tractography will be performed using in-house software (DSI studio, http://dsi-studio.labsolver.org/Home). Tracts-of-interest in the frontostriatal circuit and the frontoparietal circuit will be identified, and tract-specific analysis will be used to analyze the microstructural integrity along individual tract bundles. (3) Functional connectivity analysis: SPM8 program and in-house MATLAB codes will be used for analyses of rsfMRI data. Region-of-interests (ROIs) will be placed in the nodes of the corresponding circuits according to an anatomical template (WFU_PickAtlas 3.03). These ROIs will serve for tract determination in the tractography procedure and for seed regions in which BOLD signals are extracted for regression analysis among nodes.
Study design
- Observational model
- Other
- Time perspective
- Other
- Number of arms
- 5
| Arm | Type | Receives |
|---|---|---|
| Group 1: ADHD+DAT1, Probands | – | –30 ADHD probands with DAT1 variants |
| Group 2: ADHD+DAT1, Unaffected sibling | – | –30 same-sex unaffected siblings of Group 1 |
| Group 3: ADHD Drug-naïve, Probands | – | –30 ADHD probands without DAT1 gene variants, who were age-, sex-, and IQ-matched to Group 1 |
| Group 4: ADHD Drug-naïve, unaffected sibling | – | –30 same-sex unaffected siblings of Group 3 |
| Matched controls | – | –30 age-, sex- and IQ-matched TD controls for each of 4 groups |
Who may qualify
- Ages
- 12 to 20 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
- Study population
- The sample (n=240, 8 groups, ages 10-20, IQ > 80) consists of (1) 30 ADHD probands with DAT1 variants, (2) 30 same-sex unaffected siblings, (3) 30 ADHD probands without DAT1 gene variants, who were age-, sex-, and IQ-matched to Group 1, (4) 30 same-sex unaffected siblings of Group 3, (5) 30 age-, sex- and IQ-matched TD controls for each of 4 groups (Groups 1, 2, 3 \& 4).
Key inclusion criteria (2 listed)
- ADHD+DAT1 groups: Subjects aged 12-20, who have clinical diagnosis of ADHD according to the DSM-IV diagnostic criteria and who have risk alleles of DAT1 gene, regardless of having same-sex unaffected siblings or the drug-naïve status.
- ADHD drug-naïve groups: Subjects aged 12-20, who have clinical diagnosis of ADHD according to the DSM-IV diagnostic criteria, who do not have risk alleles of DAT1 gene, who have the same-sex unaffected siblings and who have never been treated by medication for treating ADHD.
Key exclusion criteria (1 listed)
- These subjects will be excluded from the study if they have any of the following criteria: (1) Comorbidity with DSM-IV-TR diagnosis of pervasive developmental disorder, schizophrenia, schizoaffective disorder, delusional disorder, other psychotic disorder, organic psychosis, schizotypal personality disorder, bipolar disorder, depression, severe anxiety disorders or substance use; (2) With neurodegenerative disorder, epilepsy, involuntary movement disorder, congenital metabolic disorder, brain tumor, history of severe head trauma, and history of craniotomy; (3)With visual or hearing impairments, or motor disability which may influence the process of MRI assessment; and (4) Full-scale IQ lower than 80. In addition, if the control subjects have ODD or CD, they will be excluded.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Sep 2021.
- Derived from this study: PubMed 31778781Lin HY, Kessler D, Tseng WI, Gau SS. Increased Functional Segregation Related to the Salience Network in Unaffected Siblings of Youths With Attention-Deficit/Hyperactivity Disorder. J Am Acad Child Adolesc Psychiatry. 2021 Jan;60(1):152-165. doi: 10.1016/j.jaac.2019.11.012. Epub 2019 Nov 26.
- Derived from this study: PubMed 31115278Chiang HL, Hsu YC, Shang CY, Tseng WI, Gau SS. White matter endophenotype candidates for ADHD: a diffusion imaging tractography study with sibling design. Psychol Med. 2020 May;50(7):1203-1213. doi: 10.1017/S0033291719001120. Epub 2019 May 22.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Attention Deficit/Hyperactivity Disorder, run by National Taiwan University Hospital at 1 site in Taiwan.
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 1 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: finished, as of the sponsor's last update on 2 Sep 2021. 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 Taiwan. 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.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01682915, which also lists 2 linked publications.
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 2 Sep 2021.