Autism Spectrum DisordersNCT00298246
Clinical and Immunological Investigations of Subtypes of Autism
An observational study of Autism Spectrum Disorders and Seizures, run by National Institute of Mental Health (NIMH) at 1 site in United States.
Trial summary
The purpose of this study is to learn more about autism and its subtypes. Autism is a developmental disorder in which children have problems with communication and social skills and display restricted interests and repetitive behaviors. This study has several goals. Read more about this study
- Who is it for?
- Ages 1 year to 7 years
- Conditions the study is for
- Autism Spectrum Disorders, Seizures
- How many people
- 557 participants
- Where
- 1 siteUnited States
- Study dates
- 22 Feb 2006to 15 Mar 2017
- 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 1 year to 7 years
- All sexes
- No healthy volunteers
- Child
Who may be able to join
- There are 3 participant groups in this study.
- AUT: Children with autism (diagnosed with autistic disorder according to DSM-IV criteria). This group will include children that may be dichotomized as with regression and without regression.
- DD: Children with nonspectrum developmental delays
- TYP: Children deemed to be typically developing
- Accrual numbers are to include 140 children in the AUT group, 50 children in the DD group and 75 children in the TYP group.
- AUT: Children are included if they meet DSM-IV criteria for autistic disorder, based on ADI-R and ADOS and clinical judgment. Those meeting research criteria for autism will be included.
Show all 9Show fewer
- Regression is defined as: Language loss: Loss of at least 3 spontaneously meaningful words (excluding mama or dada) used for at least a month, and lost for at least a month.AND/OR Nonverbal communication/social loss: Loss of more than one nonverbal communicative behavior (e.g. gestures, joint attention, eye contact, imagination, pretend play, sharing, showing, watching children, orienting to name, social smiling, social games, spontaneous imitation of actions, response to social overtures). Although there is overlap in the age period for regression specified in this protocol (regression between 15-30 months) and that described for childhood disintegrative disorder (CDD) (the DSM-IV criteria for indicate apparently normal development for the first 2 years after birth ), the criteria for CDD also indicate a diagnosis can only be made if symptoms are not better accounted for by another pervasive developmental disorder such as autism. Symptoms of CDD that separate it from autism include loss of acquired skills in areas such as motor skills and bowel or bladder control, while the focus of the current study is on regression in core symptoms of autism (i.e. socio-communicative skills). Thus, the currently protocol will include children with regression over 2 who meet criteria for autism, but not those who only meet criteria for CDD.
- DD: Developmental scores (Performance Quotient and Verbal Quotient) greater than 1.5 standard deviations below mean on Mullen Scales of Early Learning
- TYP: No diagnosis of developmental delay, and no first-degree relatives with a history of autism spectrum disorders.
Who cannot join
- Diagnosis of cerebral palsy. For the typical controls only, a history of extremely low birth weight (due to prematurity or intrauterine growth failure).
- If behavioral management issues (e.g. self-injury, aggressiveness) are severe to the extent that the screening protocol was aborted.
Trial locations and contacts
1 site in 1 country.
United States1 site
National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, 20892
About this study
The purpose of this study is to learn more about autism and its subtypes. Autism is a developmental disorder in which children have problems with communication and social skills and display restricted interests and repetitive behaviors.
This study has several goals. One aim is to look at types of autism that are known, such as the regressive subtype, (where skills are lost). We will explore whether there is a unique change in immune functioning related to this subtype. Another aim is to serve as one of the sites that will pilot a larger natural history study, entitled Autism Phenome Project. The goal is to further understand autism by identifying other subtypes.
Read more
We will look at several types of medical issues that may be related to autism, including immunologic problems. Children will be followed over the course of several years. We aim to capture medical problems that may be related to autism as they develop, and study outcomes in areas such as behavior and language, in order to explore known and new subtypes of autism.
Normally developing children (aged 1) with autism (age 1, and developmental delays other than autism (age 1), may be eligible for this study.
Depending on each child's study group and age, participants may undergo the following tests and procedures:
Baseline Visit
- Medical and developmental history, physical examination, psychological, cognitive and medical tests to assess symptoms of autism or other developmental disorders, photographs of the child's face, collection of hair, urine and baby teeth samples. If available, hair samples from the baby's first haircut and from the biological mother's hair are also collected.
- Overnight electroencephalogram (EEG): A special cap with electrodes is placed on the child's head to measure brain waves (brain electrical activity) while the child sleeps in the hospital overnight. Healthy volunteers do not undergo this procedure.
- Magnetic resonance imaging (MRI) scan: The child stays in the scanner, lying still for 10 to 15 minutes at a time. Since it may be difficult for the child to lie still, the test may be scheduled for a time when the child is likely to be sleepy, or the child may be sedated.
- Lumbar puncture (for children in the autism). This test and the MRI may be done under sedation.
Follow-Up Visits
Follow-up visits are scheduled at different intervals, depending on study group, age and aspect of the study the child is enrolled in. The visits include a short interview session with the child's caregiver and assessment of the child's development and behavior. Some of the assessment measures used during the baseline examination are repeated, including symptoms ratings, behavioral tests and a blood test. For some children, the final visit will include repeats of the medical procedures.
Read the detailed description
Objective:
The current investigation focuses on finding meaningful subtypes of autism. Our objectives include using comprehensive and longitudinal medical assessments and behavioral testing to find subgroups of children with autism with profiles that comprise distinct biological/behavioral phenotypes.
Specific goals include determining if there is a unique alteration in immune function among autistic children with a regressive clinical course, and identifying autism-specific sleep and electroenchelalogram (EEG) abnormalities, and other potential biomarkers.
Study Population:
We are conducting a longitudinal natural history study of 140 children with autism, 12 to 84 months of age at study entry. We also are following as many as 75 typically developing children, and 50 children with Developmental Delay to serve as age-/sex-matched controls.
Design:
Systematic prospective evaluations are being utilized to determine diagnostic and functional outcomes, and evaluate behavioral, medical and immunologic functioning. These evaluations include comprehensive medical history, behavioral assessment, physical and neurologic examination, polysomnography (PSG) and EEG, and blood work for laboratory assays. Baseline evaluations also included MRI and lumbar puncture (the latter was only subjects with autism). In any investigation of behavioral outcomes and potential biomarkers, repeated assessments are necessary to determine whether findings are due to state versus trait alterations. Thus, key elements of the assessments are repeated every 6 to 12 months, depending on the child s age.
Outcome Variables:
Measures of autism symptoms and severity, along with cognitive and adaptive behavior profiles, will be used as behavioral outcome variables.
Results of physical and neurological examinations, genetic testing, EEGs, polysomnograms, MRI scans and laboratory assays of blood and CSF will be tested for their utility as biomarkers of autism s core symptoms or identification of etiologically related subgroups of patients.
- Conditions
- Autism Spectrum Disorders, Seizures
- Keywords
- Neurodevelopmental Disorders, Neurological Disorder, Children- Onset, Children, Pervasive Developmental Disorder, PDD, Autism, Healthy Volunteer, HV
- Medical subject headings
- Autism Spectrum Disorder, Seizures, Neurodevelopmental Disorders, Nervous System Diseases, Child Development Disorders, Pervasive, Autistic Disorder
What is being measured
The primary outcome is the main question the study is designed to answer.
Behavioral profiles
Measured: 6 to 12 months
Immune markers
Measured: 6 to 12 months
Sleep/EEG findings
Measured: 6 to 12 months
Neuroimaging findings
Measured: 6 to 12 months
Other laboratory findings
Measured: 6 to 12 months
Genetic abnormalities
Measured: 6 to 12 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Mar 2006 (estimated)
- Study start22 Feb 2006
- Study completion15 Mar 2017
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (16)Papers the sponsor has linked to this study.
- Other trials for Autism Spectrum DisordersStudies of the same condition, open and under way.
- More trials run by National Institute of Mental Health (NIMH)The 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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 557 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Institute of Mental Health (NIMH)
- Sponsor type
- US National Institutes of Health
- Responsible party
- Sponsor
- Investigators
- Susan E Swedo, M.D., Principal investigator, National Institute of Mental Health (NIMH)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00298246
- Sponsor's protocol ID
- 060102
- Other IDs
- 06-M-0102
- Status last verified
- 15 Mar 2017
- First submitted
- 1 Mar 2006
- Last updated
- 6 Oct 2017
- Results posted
- No
Publications
Ahlsen G, Rosengren L, Belfrage M, Palm A, Haglid K, Hamberger A, Gillberg C. Glial fibrillary acidic protein in the cerebrospinal fluid of children with autism and other neuropsychiatric disorders. Biol Psychiatry. 1993 May 15;33(10):734-43. doi: 10.1016/0006-3223(93)90124-v.
PubMed 8353169Ashwood P, Anthony A, Pellicer AA, Torrente F, Walker-Smith JA, Wakefield AJ. Intestinal lymphocyte populations in children with regressive autism: evidence for extensive mucosal immunopathology. J Clin Immunol. 2003 Nov;23(6):504-17. doi: 10.1023/b:joci.0000010427.05143.bb.
PubMed 15031638Ashwood P, Van de Water J. Is autism an autoimmune disease? Autoimmun Rev. 2004 Nov;3(7-8):557-62. doi: 10.1016/j.autrev.2004.07.036.
PubMed 15546805Farmer CA, Thurm AE, Honnekeri B, Kim P, Swedo SE, Han JC. The contribution of platelets to peripheral BDNF elevation in children with autism spectrum disorder. Sci Rep. 2021 Sep 13;11(1):18158. doi: 10.1038/s41598-021-97367-4.
PubMed 34518555Tierney E, Remaley AT, Thurm A, Jager LR, Wassif CA, Kratz LE, Bailey-Wilson JE, Bukelis I, Sarphare G, Jung ES, Brand B, Noah KK, Porter FD. Sterol and lipid analyses identifies hypolipidemia and apolipoprotein disorders in autism associated with adaptive functioning deficits. Transl Psychiatry. 2021 Sep 9;11(1):471. doi: 10.1038/s41398-021-01580-8.
PubMed 34504056Oztan O, Garner JP, Partap S, Sherr EH, Hardan AY, Farmer C, Thurm A, Swedo SE, Parker KJ. Cerebrospinal fluid vasopressin and symptom severity in children with autism. Ann Neurol. 2018 Oct;84(4):611-615. doi: 10.1002/ana.25314. Epub 2018 Sep 26.
PubMed 30152888Manwaring SS, Mead DL, Swineford L, Thurm A. Modelling gesture use and early language development in autism spectrum disorder. Int J Lang Commun Disord. 2017 Sep;52(5):637-651. doi: 10.1111/1460-6984.12308. Epub 2017 Jan 24.
PubMed 28120370Pardo CA, Farmer CA, Thurm A, Shebl FM, Ilieva J, Kalra S, Swedo S. Serum and cerebrospinal fluid immune mediators in children with autistic disorder: a longitudinal study. Mol Autism. 2017 Jan 5;8:1. doi: 10.1186/s13229-016-0115-7. eCollection 2017.
PubMed 28070266Shoffner J, Trommer B, Thurm A, Farmer C, Langley WA 3rd, Soskey L, Rodriguez AN, D'Souza P, Spence SJ, Hyland K, Swedo SE. CSF concentrations of 5-methyltetrahydrofolate in a cohort of young children with autism. Neurology. 2016 Jun 14;86(24):2258-63. doi: 10.1212/WNL.0000000000002766. Epub 2016 May 13.
PubMed 27178705Thurm A, Himelstein D, D'Souza P, Rennert O, Jiang S, Olatunji D, Longo N, Pasquali M, Swedo S, Salomons GS, Carrillo N. Creatine Transporter Deficiency: Screening of Males with Neurodevelopmental Disorders and Neurocognitive Characterization of a Case. J Dev Behav Pediatr. 2016 May;37(4):322-6. doi: 10.1097/DBP.0000000000000299.
PubMed 27096572Smith E, Thurm A, Greenstein D, Farmer C, Swedo S, Giedd J, Raznahan A. Cortical thickness change in autism during early childhood. Hum Brain Mapp. 2016 Jul;37(7):2616-29. doi: 10.1002/hbm.23195. Epub 2016 Apr 7.
PubMed 27061356Buckley AW, Scott R, Tyler A, Mahoney JM, Thurm A, Farmer C, Swedo S, Burroughs SA, Holmes GL. State-Dependent Differences in Functional Connectivity in Young Children With Autism Spectrum Disorder. EBioMedicine. 2015 Nov 5;2(12):1905-15. doi: 10.1016/j.ebiom.2015.11.004. eCollection 2015 Dec.
PubMed 26844269Lane R, Kessler R, Buckley AW, Rodriguez A, Farmer C, Thurm A, Swedo S, Felt B. Evaluation of Periodic Limb Movements in Sleep and Iron Status in Children With Autism. Pediatr Neurol. 2015 Oct;53(4):343-9. doi: 10.1016/j.pediatrneurol.2015.06.014. Epub 2015 Jun 26.
PubMed 26231264Thurm A, Manwaring SS, Swineford L, Farmer C. Longitudinal study of symptom severity and language in minimally verbal children with autism. J Child Psychol Psychiatry. 2015 Jan;56(1):97-104. doi: 10.1111/jcpp.12285. Epub 2014 Jun 24.
PubMed 24961159Graf-Myles J, Farmer C, Thurm A, Royster C, Kahn P, Soskey L, Rothschild L, Swedo S. Dietary adequacy of children with autism compared with controls and the impact of restricted diet. J Dev Behav Pediatr. 2013 Sep;34(7):449-59. doi: 10.1097/DBP.0b013e3182a00d17.
PubMed 24042076
Study at a glance
From the registry record, last updated by the sponsor on 6 Oct 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Clinical and Immunological Investigations of Subtypes of Autism
- ClinicalTrials.gov ID
- NCT00298246
- Acronym / sponsor ID
- 060102
- Conditions
- Autism Spectrum Disorders, Seizures
- Keywords
- Neurodevelopmental Disorders, Neurological Disorder, Children- Onset, Children, Pervasive Developmental Disorder, PDD, Autism, Healthy Volunteer
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 557 participants (actual)
- Lead sponsor
- National Institute of Mental Health (NIMH)US National Institutes of Health
- Study start
- 22 Feb 2006
- Study completion
- 15 Mar 2017
- First posted
- 1 Mar 2006 (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 is to learn more about autism and its subtypes. Autism is a developmental disorder in which children have problems with communication and social skills and display restricted interests and repetitive behaviors.
This study has several goals. One aim is to look at types of autism that are known, such as the regressive subtype, (where skills are lost). We will explore whether there is a unique change in immune functioning related to this subtype. Another aim is to serve as one of the sites that will pilot a larger natural history study, entitled Autism Phenome Project. The goal is to further understand autism by identifying other subtypes.
We will look at several types of medical issues that may be related to autism, including immunologic problems. Children will be followed over the course of several years. We aim to capture medical problems that may be related to autism as they develop, and study outcomes in areas such as behavior and language, in order to explore known and new subtypes of autism.
Normally developing children (aged 1) with autism (age 1, and developmental delays other than autism (age 1), may be eligible for this study.
Depending on each child's study group and age, participants may undergo the following tests and procedures:
Baseline Visit
- Medical and developmental history, physical examination, psychological, cognitive and medical tests to assess symptoms of autism or other developmental disorders, photographs of the child's face, collection of hair, urine and baby teeth samples. If available, hair samples from the baby's first haircut and from the biological mother's hair are also collected.
- Overnight electroencephalogram (EEG): A special cap with electrodes is placed on the child's head to measure brain waves (brain electrical activity) while the child sleeps in the hospital overnight. Healthy volunteers do not undergo this procedure.
- Magnetic resonance imaging (MRI) scan: The child stays in the scanner, lying still for 10 to 15 minutes at a time. Since it may be difficult for the child to lie still, the test may be scheduled for a time when the child is likely to be sleepy, or the child may be sedated.
- Lumbar puncture (for children in the autism). This test and the MRI may be done under sedation.
Follow-Up Visits
Follow-up visits are scheduled at different intervals, depending on study group, age and aspect of the study the child is enrolled in. The visits include a short interview session with the child's caregiver and assessment of the child's development and behavior. Some of the assessment measures used during the baseline examination are repeated, including symptoms ratings, behavioral tests and a blood test. For some children, the final visit will include repeats of the medical procedures.
Detailed description
Objective:
The current investigation focuses on finding meaningful subtypes of autism. Our objectives include using comprehensive and longitudinal medical assessments and behavioral testing to find subgroups of children with autism with profiles that comprise distinct biological/behavioral phenotypes.
Specific goals include determining if there is a unique alteration in immune function among autistic children with a regressive clinical course, and identifying autism-specific sleep and electroenchelalogram (EEG) abnormalities, and other potential biomarkers.
Study Population:
We are conducting a longitudinal natural history study of 140 children with autism, 12 to 84 months of age at study entry. We also are following as many as 75 typically developing children, and 50 children with Developmental Delay to serve as age-/sex-matched controls.
Design:
Systematic prospective evaluations are being utilized to determine diagnostic and functional outcomes, and evaluate behavioral, medical and immunologic functioning. These evaluations include comprehensive medical history, behavioral assessment, physical and neurologic examination, polysomnography (PSG) and EEG, and blood work for laboratory assays. Baseline evaluations also included MRI and lumbar puncture (the latter was only subjects with autism). In any investigation of behavioral outcomes and potential biomarkers, repeated assessments are necessary to determine whether findings are due to state versus trait alterations. Thus, key elements of the assessments are repeated every 6 to 12 months, depending on the child s age.
Outcome Variables:
Measures of autism symptoms and severity, along with cognitive and adaptive behavior profiles, will be used as behavioral outcome variables.
Results of physical and neurological examinations, genetic testing, EEGs, polysomnograms, MRI scans and laboratory assays of blood and CSF will be tested for their utility as biomarkers of autism s core symptoms or identification of etiologically related subgroups of patients.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 1 year to 7 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child
Key inclusion criteria (9 listed)
- There are 3 participant groups in this study.
- AUT: Children are included if they meet DSM-IV criteria for autistic disorder, based on ADI-R and ADOS and clinical judgment. Those meeting research criteria for autism will be included.
- Regression is defined as: Language loss: Loss of at least 3 spontaneously meaningful words (excluding mama or dada) used for at least a month, and lost for at least a month.AND/OR Nonverbal communication/social loss: Loss of more than one nonverbal communicative behavior (e.g. gestures, joint attention, eye contact, imagination, pretend play, sharing, showing, watching children, orienting to name, social smiling, social games, spontaneous imitation of actions, response to social overtures). Although there is overlap in the age period for regression specified in this protocol (regression between 15-30 months) and that described for childhood disintegrative disorder (CDD) (the DSM-IV criteria for indicate apparently normal development for the first 2 years after birth ), the criteria for CDD also indicate a diagnosis can only be made if symptoms are not better accounted for by another pervasive developmental disorder such as autism. Symptoms of CDD that separate it from autism include loss of acquired skills in areas such as motor skills and bowel or bladder control, while the focus of the current study is on regression in core symptoms of autism (i.e. socio-communicative skills). Thus, the currently protocol will include children with regression over 2 who meet criteria for autism, but not those who only meet criteria for CDD.
- DD: Developmental scores (Performance Quotient and Verbal Quotient) greater than 1.5 standard deviations below mean on Mullen Scales of Early Learning
- TYP: No diagnosis of developmental delay, and no first-degree relatives with a history of autism spectrum disorders.
Key exclusion criteria (2 listed)
- Diagnosis of cerebral palsy. For the typical controls only, a history of extremely low birth weight (due to prematurity or intrauterine growth failure).
- If behavioral management issues (e.g. self-injury, aggressiveness) are severe to the extent that the screening protocol was aborted.
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
Behavioral profiles
Time frame: 6 to 12 months
Immune markers
Time frame: 6 to 12 months
Sleep/EEG findings
Time frame: 6 to 12 months
Neuroimaging findings
Time frame: 6 to 12 months
Other laboratory findings
Time frame: 6 to 12 months
Genetic abnormalities
Time frame: 6 to 12 months
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 6 Oct 2017.
- Background: PubMed 8353169Ahlsen G, Rosengren L, Belfrage M, Palm A, Haglid K, Hamberger A, Gillberg C. Glial fibrillary acidic protein in the cerebrospinal fluid of children with autism and other neuropsychiatric disorders. Biol Psychiatry. 1993 May 15;33(10):734-43. doi: 10.1016/0006-3223(93)90124-v.
- Background: PubMed 15031638Ashwood P, Anthony A, Pellicer AA, Torrente F, Walker-Smith JA, Wakefield AJ. Intestinal lymphocyte populations in children with regressive autism: evidence for extensive mucosal immunopathology. J Clin Immunol. 2003 Nov;23(6):504-17. doi: 10.1023/b:joci.0000010427.05143.bb.
- Background: PubMed 15546805Ashwood P, Van de Water J. Is autism an autoimmune disease? Autoimmun Rev. 2004 Nov;3(7-8):557-62. doi: 10.1016/j.autrev.2004.07.036.
- Derived from this study: PubMed 34518555Farmer CA, Thurm AE, Honnekeri B, Kim P, Swedo SE, Han JC. The contribution of platelets to peripheral BDNF elevation in children with autism spectrum disorder. Sci Rep. 2021 Sep 13;11(1):18158. doi: 10.1038/s41598-021-97367-4.
- Derived from this study: PubMed 34504056Tierney E, Remaley AT, Thurm A, Jager LR, Wassif CA, Kratz LE, Bailey-Wilson JE, Bukelis I, Sarphare G, Jung ES, Brand B, Noah KK, Porter FD. Sterol and lipid analyses identifies hypolipidemia and apolipoprotein disorders in autism associated with adaptive functioning deficits. Transl Psychiatry. 2021 Sep 9;11(1):471. doi: 10.1038/s41398-021-01580-8.
- Derived from this study: PubMed 30152888Oztan O, Garner JP, Partap S, Sherr EH, Hardan AY, Farmer C, Thurm A, Swedo SE, Parker KJ. Cerebrospinal fluid vasopressin and symptom severity in children with autism. Ann Neurol. 2018 Oct;84(4):611-615. doi: 10.1002/ana.25314. Epub 2018 Sep 26.
- Derived from this study: PubMed 28120370Manwaring SS, Mead DL, Swineford L, Thurm A. Modelling gesture use and early language development in autism spectrum disorder. Int J Lang Commun Disord. 2017 Sep;52(5):637-651. doi: 10.1111/1460-6984.12308. Epub 2017 Jan 24.
- Derived from this study: PubMed 28070266Pardo CA, Farmer CA, Thurm A, Shebl FM, Ilieva J, Kalra S, Swedo S. Serum and cerebrospinal fluid immune mediators in children with autistic disorder: a longitudinal study. Mol Autism. 2017 Jan 5;8:1. doi: 10.1186/s13229-016-0115-7. eCollection 2017.
- Derived from this study: PubMed 27178705Shoffner J, Trommer B, Thurm A, Farmer C, Langley WA 3rd, Soskey L, Rodriguez AN, D'Souza P, Spence SJ, Hyland K, Swedo SE. CSF concentrations of 5-methyltetrahydrofolate in a cohort of young children with autism. Neurology. 2016 Jun 14;86(24):2258-63. doi: 10.1212/WNL.0000000000002766. Epub 2016 May 13.
- Derived from this study: PubMed 27096572Thurm A, Himelstein D, D'Souza P, Rennert O, Jiang S, Olatunji D, Longo N, Pasquali M, Swedo S, Salomons GS, Carrillo N. Creatine Transporter Deficiency: Screening of Males with Neurodevelopmental Disorders and Neurocognitive Characterization of a Case. J Dev Behav Pediatr. 2016 May;37(4):322-6. doi: 10.1097/DBP.0000000000000299.
- Derived from this study: PubMed 27061356Smith E, Thurm A, Greenstein D, Farmer C, Swedo S, Giedd J, Raznahan A. Cortical thickness change in autism during early childhood. Hum Brain Mapp. 2016 Jul;37(7):2616-29. doi: 10.1002/hbm.23195. Epub 2016 Apr 7.
- Derived from this study: PubMed 26844269Buckley AW, Scott R, Tyler A, Mahoney JM, Thurm A, Farmer C, Swedo S, Burroughs SA, Holmes GL. State-Dependent Differences in Functional Connectivity in Young Children With Autism Spectrum Disorder. EBioMedicine. 2015 Nov 5;2(12):1905-15. doi: 10.1016/j.ebiom.2015.11.004. eCollection 2015 Dec.
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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.
Susan E Swedo, M.D. principal investigator
National Institute of Mental Health (NIMH)
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 Autism Spectrum Disorders and Seizures, run by National Institute of Mental Health (NIMH) at 1 site in United States.
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 9 inclusion and 2 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 6 Oct 2017. 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 United States. 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.
What does the primary outcome measure?
Behavioral profiles (time frame: 6 to 12 months). The study lists 6 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00298246, which also lists 16 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 6 Oct 2017.