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Autism Spectrum Disorders (ASD)

Autism Spectrum Disorders (ASD), also known as Pervasive Developmental Disorders (PDDs), cause severe and pervasive impairment in thinking, feeling, language, and the ability to relate to others. These disorders are usually first diagnosed in early childhood and range from a severe form, called autistic disorder, through pervasive development disorder not otherwise specified (PDD-NOS), to a much milder form, Asperger syndrome. They also include two rare disorders, Rett syndrome and childhood disintegrative disorder. Learn more about Autism Spectrum Disorders (Pervasive Developmental Disorders).

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Featured Studies

Featured studies include only those currently recruiting participants. Studies with the most recent start date appear first.

Can Novel Telemedicine Tools Reduce Disparities Related to Early Identification of Autism

Study Type: Interventional
Start Date: March 4, 2019
Location: Nashville, Tennessee
Eligibility: Ages 15 Months–3, Does Not Accept Healthy Volunteers

In this study, the investigators are trying to find new ways to screen for autism spectrum disorder (ASD) in young children. The investigators want to see if people like pediatricians can screen children for ASD while a psychologist watches on a monitor. The investigators are testing two screening tools. The investigators want to see if they are good at identifying children with ASD and children without ASD. The investigators hope this research will make it easier for families to get answers when there are concerns for ASD.

Building Resilience and Appropriate Independence in Young Adults With Autism

Study Type: Interventional
Start Date: January 25, 2019
Location: San Francisco, California
Eligibility: Ages 18–26, Does Not Accept Healthy Volunteers

This study evaluates the effects of a 12-week life-skills resilience curriculum for young adults with autism. The project utilizes a wait-list crossover design and compares the intervention to standard care.

VR Intervention to Improve Police Safety

Study Type: Interventional
Start Date: November 28, 2017
Location: Philadelphia, Pennsylvania
Eligibility: Ages 12–60, Does Not Accept Healthy Volunteers

The primary objective of this study is to demonstrate the efficacy of Floreo's police safety module (PSM) in adolescents and adults with autism spectrum disorder (ASD) by assessing improvement in police interaction skills as compared to a video modeling intervention.

Translating Evidence-based Interventions for ASD: Multi-Level Implementation Strategy

Study Type: Interventional
Start Date: October 20, 2017
Locations: Sacramento, California; San Diego, California; Westwood, California
Eligibility: Ages 18 and Older, Accepts Healthy Volunteers

The purpose of this study is to test the effectiveness of the "Translating Evidence-based Interventions (EBI) for ASD: Multi-Level Implementation Strategy" (TEAMS) model on provider-level implementation outcomes when used to enhance provider training in two evidence-based interventions for children with autism spectrum disorder (ASD). The TEAMS- Leadership Institute (TLI) module includes training to program/school district leaders in implementation of EBI, and the TEAMS Individualized Provider Strategy for Training (TIPS) module applies Motivational Interviewing strategies to facilitate individual provider behavior change. TEAMS will be tested in combination with two clinical interventions in two community service setting contexts (1) AIM HI intervention in mental health programs and (2) CPRT intervention in schools. It is expected that the addition of TLI and / or TIPS will improve use of EBI by community providers.

Study of Neuroimaging Biomarkers of Social Cognition Deficits in Adolescents (Age 13-17) With Autism Spectrum Disorder and Effects of Gabapentin

Study Type: Interventional
Start Date: September 14, 2017
Location: Worcester, Massachusetts
Eligibility: Ages 13–17, Does Not Accept Healthy Volunteers

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder that is increasing in prevalence, and is characterized by deficits in social communication and interaction across multiple contexts, and restricted, repetitive patterns of behavior, interests, or activities. The majority of individuals with ASD have poor outcomes in the area of social functioning; however, there are no medical treatments available that target the core social communication deficits. The goal of the proposed research is to understand the neurobiological role of an imbalance in excitatory (glutamate) and inhibitory (gamma-aminobutyric acid, GABA) neurotransmission in the social cognition deficits in ASD, and to develop proton magnetic resonance spectroscopy as a measurement of target engagement to measure the ability of a medication, gabapentin, to increase cortical GABA levels. Spectrally-edited proton magnetic resonance spectroscopy (1H-MRS) provides an ideal method for measuring cortical GABA levels. All proposed studies will be in 70 adolescents (male and female) with ASD (age 13 to 17 years). Specific Aim 1: To measure correlations of 1H-MRS GABA levels in the anterior cingulate cortex (ACC) and occipital cortex (OC) with clinical measures of social cognition at baseline. Specific Aim 2: To measure the effect of an initial one time dose of gabapentin on 1H-MRS GABA levels in the ACC and OC. The hypotheses are 1) that higher social cognition ability will be positively correlated with GABA in the ACC but not in the OC (a control, non-social cognition-related region) of individuals with ASD, and 2) that gabapentin will increase GABA levels in the ACC and OC of youth with ASD.

Feasibility of Implementing a Mental Health Care Program and Home-based Training for Mothers of Children With Autism Spectrum Disorder in an Urban Population in Bangladesh

Study Type: Interventional
Start Date: April 1, 2017
Location: Dhaka, Bangladesh
Eligibility: Females, Ages 18–50, Does Not Accept Healthy Volunteers

Background (brief):

The global burden of depression accounts for 2.5% of global DALYs, and in South Asia the estimate is 13.3 % of DALYs per 100,000 populations. Mothers of children with Autism Spectrum Disorder (ASD) have reported higher level of depression than mothers of children with other developmental disorder and the prevalence of ASD is high in Asian countries. In Bangladesh 16% of adults suffer from depression and a recent study conducted in Bangladesh has documented a high prevalence of depression among mothers of children with ASD (45%). Mothers are the life time care givers of children with ASD, and a high burden of depression is likely negatively impact on the ability of the mothers to provide care to children at home. Mental health is not addressed in Bangladesh and there is scarcity of qualified providers.


The investigators propose to pilot the feasibility of a package intervention including implementation of mental health care and home based training program for the mothers of children with ASD integrated in the regular activities of the special schools that offer ASD care in Dhaka city in Bangladesh.


The study will be conducted in 2 selected special schools over 15 months. In the first stage, the investigators will set up the study in two schools and identify various stakeholders for qualitative assessment of the barriers of implementing the intervention at the institutional level, individual level, family level, provider level, policy maker level and at the level of the state. Research staff will identify mothers 18 years of age or older who has a child with ASD between 3 and 17 years of age enrolled in the school. Following consent, data collector will obtain data and assess current major depressive episode (MDE) of the eligible mothers following a standard diagnostic tool (SCID-I). All mothers diagnosed as having MDE will be invited to participate in the intervention (intervention mothers) and the investigators will assess the performances in children with ASD by applying ASD Diagnostic Check-list (ADCL).

In the second stage, investigators will implement interventions over 4-6 months, including (a) implementing mental health care services at the selected schools targeting the intervention mothers, and (b) organizing training sessions of the intervention mothers for supporting child care at home for enhancing child performances. Every month a psychiatrist will visit each school for providing necessary advice and treatment to the intervention mothers or suggest referral to hospital care, if necessary.

One special educator will be deployed at each school who will organize structured training sessions for educating the intervention mothers by using BCC materials developed and validated by icddr,b in the local setting. The special educators will conduct multiple group sessions including 5-8 mothers in each group for covering the 6 modules over 2 weeks time, and follow up intervention mothers at home every month for conducting refresher's training, documenting the need of additional training supports, and linking mother with an ASD expert for helping mothers taking a decision.

In stage 3, investigators will conduct post intervention qualitative survey with various stakeholders who would be involved with implementing the intervention and participated in the baseline qualitative survey. End line assessment will be conducted of current major depressive episode (MDE) among all mothers and assess the performance of the children of intervention mothers in order to assess the impact of the training at home.

Outcome measures/variables:

The primary outcome of the study is to assess the feasibility of institutionalizing the combined intervention of mental health care supports and the home based training program of the mothers who would be diagnosed as having major current major depressive episode. The primary outcome will be assessed by obtaining the perspectives of various stakeholders. The following parameters will be assessed for measuring feasibility of the proposed intervention.

Acceptability, Adaptability, Demands, Practicality, Implementation, Integration

The secondary outcomes will include estimating the impact of the combined interventions on the prevalence rate of maternal depression (MDE), individual performances of children, and cost of intervention. Adaptation of the proposed strategy, if feasible will help the mothers of children with ASD become skilled workforces for filling in the gap of the special educators in resource poor settings, and extension of these services to more children with ASD.

Engaging Siblings of Adults With Autism in Future Planning

Study Type: Interventional
Start Date: February 1, 2017
Location: Boston, Massachusetts
Eligibility: Ages 18 and Older, Does Not Accept Healthy Volunteers

The proposed project is an intervention development grant in which the investigators will develop a program to facilitate the engagement of adult siblings to work with their families to plan for the future of their brother or sister with autism spectrum disorder (ASD). Siblings FORWARD (Focusing on Relationships, Well-being, and Responsibility aheaD) will target common barriers to sibling involvement in family future planning, including improving family communication around difficult topics, increasing siblings' knowledge of and confidence in accessing ASD service systems, and anticipating and proactively problem-solving barriers to future planning. Siblings FORWARD will be implemented in a community setting. There are three aims of the project, and only the third aim will utilize a clinical trial. Aim 1: To develop the Siblings FORWARD program. The investigators will develop the Siblings FORWARD program in collaboration with community organizations, with input from siblings, adults with ASD, and community providers. Aim 2: To assess feasibility of the Siblings FORWARD program. The investigators will assess recruitment capability, appropriateness of outcome measures, acceptability of the program, and viability of the procedures and further refine the Siblings FORWARD Program through an open trial with 5 siblings. Aim 3: To assess the outcomes of participation in the Siblings FORWARD program. The investigators will conduct a pilot randomized controlled trial (RCT) with 36 siblings. The investigators will collect pre-, post-, and 3-month follow up data measuring intervention targets (problem-solving skills, communication skills, self-efficacy, perceived barriers to future planning, knowledge of services & delivery systems, knowledge of family plans), sibling behavioral outcomes (development & implementation of a sibling future plan of action, increased family communication around future planning), and proximal outcomes for the adult with ASD (unmet needs, quality of life, and family relationships). Siblings will be randomly assigned to the Siblings FORWARD (N=18) or an information only control condition (N=18). The investigators hypothesize that siblings who participate in the Siblings FORWARD program will have a more developed plan of action, gains in skills and knowledge, and improved proximal outcomes for the adult with ASD, compared to siblings in the control condition.

An SRT Model for Early Access to ASD Intervention

Study Type: Interventional
Start Date: July 31, 2015
Location: Seattle, Washington
Eligibility: Ages 16 Months and Older, Accepts Healthy Volunteers

This project will implement and evaluate an innovative healthcare service delivery model designed to promote earlier access to specialized intervention for toddlers with ASD. The Screen-Refer-Treat (SRT) model provides a coordinated and cost-effective approach to early identification and intervention by involving both medical and EI providers, and represents a practical and sustainable strategy for bridging the gap between ASD concerns and ASD intervention.

Comparing Behavioral Assessments Using Telehealth for Children With Autism

Study Type: Interventional
Start Date: June 30, 2015
Location: Iowa City, Iowa
Eligibility: Ages 18 Months and Older, Does Not Accept Healthy Volunteers

The main purpose of this study is to determine the most efficient way for families to reduce problem behavior in their children with an autism spectrum disorder. Parents will be trained using telehealth to use applied behavior analysis (ABA) procedures to improve child behavior and communication. The study compares an established type of ABA assessment and treatment to a briefer, more streamlined version of this same type of assessment/treatment.

TMS for the Investigation of Brain Plasticity in Autism Spectrum Disorders

Study Type: Observational
Start Date: May 31, 2015
Location: Boston, Massachusetts
Eligibility: Ages 6–65, Accepts Healthy Volunteers

The main purpose is to study brain plasticity (the changes that occur in the brain through experience) in individuals with autism spectrum disorder (ASD). Research suggests that during development, the brains of individuals with ASD may change in response to their experiences differently than the brains of typically developing individuals. Investigators want to understand why and how this difference may contribute to the symptoms of ASD.

Changing Developmental Trajectories Through Early Treatment

Study Type: Interventional
Start Date: May 31, 2013
Location: Atlanta, Georgia
Eligibility: Ages 9 Months and Older, Does Not Accept Healthy Volunteers

The major purpose of this study is to directly compare two parent intervention conditions for children diagnosed with autism spectrum disorders at 18 months of age to document the effectiveness.

Studying Childhood-onset Behavioral, Psychiatric, and Developmental Disorders

Study Type: Observational
Start Date: January 26, 2013
Location: Bethesda, Maryland
Eligibility: Ages N/A–99, Does Not Accept Healthy Volunteers


- Many psychiatric, behavioral, and developmental disorders are genetic. This means that they tend to run in families. Some begin in childhood, while others do not appear until adulthood. Researchers want to look at people of all ages who have these disorders that started in childhood. They will also look at relatives of people with these disorders. This information will allow doctors to learn more about childhood behavioral problems and how they are inherited. It may also help doctors treat those disorders.


- To study the onset and treatment of childhood behavioral, psychiatric, and developmental disorders.


- Individuals of any age who have a psychiatric, autism spectrum, or developmental disorder, or other behavioral problems.

- Family members of individuals with the above disorders. This group may include parents, grandparents, siblings, aunts/uncles, cousins, and children.


- Participants will be screened with a medical history and physical exam. They will have a psychiatric history with tests of thinking, judgment, and behavior. Blood and urine samples will be collected. Brain imaging scans will be performed to look at brain function. They may have a spinal tap to collect cerebrospinal fluid.

- Relatives will have a medical history and physical exam. They will also have a psychiatric history with tests of thinking, judgment, and behavior. Blood and urine samples will be collected. Brain imaging scans will be performed to look at brain function.

- A relative s exams may reveal a behavioral or other disorder. If so, he or she may re-enroll on the study as a person with the disorder.

Examination of Differential Valuation of Leisure Items and Attention as Reinforcers in Children With Autism

Study Type: Interventional
Start Date: June 22, 2012
Location: Atlanta, Georgia
Eligibility: Ages 2–6, Does Not Accept Healthy Volunteers

The purpose of this study is to compare how children with autism, typically developing children, and children with other developmental delays value social attention and toys. The first part of the study seeks to determine whether breakpoints when responding on progressive ratio (PR) schedules can be used to determine the value of leisure items and attention. By comparing the breakpoints obtained for leisure items and attention, the researchers will determine the differential valuation of leisure items and attention. It is anticipated that the manner in which individuals with an autism spectrum disorder (ASD) diagnosis and those who do not will differ with respect to the degree to which they value these two types of stimuli. The second part of the study seeks to determine whether an intervention in which social attention is paired with primary reinforcers impacts responding during the PR assessment, in children with ASD.

Clinical Trial in 22q13 Deletion Syndrome(Phelan-McDermid Syndrome)

Study Type: Interventional
Start Date: February 29, 2012
Location: New York, New York
Eligibility: Ages 5–12, Does Not Accept Healthy Volunteers

The purpose of this study is to pilot the use of Insulin-Like Growth Factor-1 (IGF-1) treatment in 22q13 Deletion Syndrome (Phelan-McDermid Syndrome) caused by SHANK3 gene deficiency in order to evaluate safety, tolerability, and efficacy. IGF-1 is an injection under the skin that contains human IGF-1. IGF-1 is approved by the FDA under the brand name Increlex for the treatment of children with short stature due to primary IGF-1 deficiency. It is being used off-label in the current study and is not FDA approved, nor has it yet been studied in humans for the treatment of SHANK3 deficiency.

Cognitive Neuroscience of Autism Spectrum Disorders

Study Type: Observational
Start Date: February 21, 2010
Location: Bethesda, Maryland
Eligibility: Ages 5–89, Accepts Healthy Volunteers


- Autism spectrum disorders (ASDs) are a group of developmental disorders that affect communication, social interaction, and behavior. Relatively little is known about the relationship between genetics and behavior among these individuals and their close relatives. Researchers are interested in using interviews and rating scales to better understand these issues, as well as collecting brain scan data and genetic samples for testing and comparison.

- By comparing test results and genetic samples from healthy volunteers, people with ASD, and parents (or caregivers or legal guardians) of the first two groups, researchers hope to better understand the neuroscience of ASD.


- To learn more about the brain in healthy people and in people with autism spectrum disorders.

- To study genes that might be involved in autism spectrum disorders by collecting DNA samples from participants.


The following groups of participants will be eligible for the study:

- Individuals between 5 and 89 years of age who have autism spectrum disorders.

- Healthy volunteers between 5 and 89 years of age.

- Cognitively impaired children between 5 and 17 years of age.

- Parents/caregivers/legal guardians of individuals in the above three groups.


- Participants will visit the National Institutes of Health Clinical Center for research tests, which will be administered over multiple visits. Researchers will determine the specific tests to be administered based on the medical history of the study participant.

- Researchers will study the brain through interviews, tests of thinking and memory (neuropsychological tests), brain imaging with magnetic resonance imaging (MRI), and magnetoencephalography (MEG).

- The study will also collect blood or saliva to obtain a DNA sample.

The Neurodevelopmental and Behavioral Phenotyping Screening Protocol

Study Type: Observational
Start Date: December 29, 2005
Location: Bethesda, Maryland
Eligibility: Ages N/A–20, Accepts Healthy Volunteers

This study will screen children and adolescents (and their parents) to determine the child's eligibility for participation in NIMH research studies on autism spectrum disorders, such as autism and Rett's Disorder.

Screening evaluations include some or all of the following procedures:

Parent interview

Parent and child evaluations including:

- Diagnostic interview

- Developmental or cognitive testing

- Ratings of psychiatric and medical symptoms

- Neuropsychological testing

- Personal, social an family history

Child physical examination and possible blood draw

Children who are determined eligible for a current NIMH research protocol are invited to participate.