Autism Spectrum Disorder (ASD)

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Review clinical trials related to Autism Spectrum Disorder (ASD). Use filters to narrow results by trial status, phase, treatment, biological sex and sponsor.

Condition / disease
Location
Status: Recruiting

Adia MED of Winter Park LLC Autism Spectrum Disorder Research Study

This 24-month study is testing whether adding AdiaVita, an umbilical cord blood-derived stem cell and exosome product, to glutathione therapy helps improve autism symptoms in children ages 3-12 more than glutathione alone. Children will be randomly placed into one of two groups for the first three months: one group receives glutathione only, and the other receives glutathione plus monthly intravenous AdiaVita infusions. Both groups also use topical glutathione cream twice daily at home. Autism symptoms will be tracked over two years using the Autism Treatment Evaluation Checklist (ATEC) filled out by parents and by therapists or teachers. Safety, side effects, quality of life, and overall well-being will be closely monitored through regular clinic visits, physical exams, blood tests, and adverse event reporting. After the initial three-month phase, children who received glutathione alone may cross over to receive AdiaVita infusions at no additional cost if safety checks at month 6 are satisfactory. Approximately 100 children with a confirmed autism diagnosis from the Central Florida area will take part. Participation is completely voluntary, and families may withdraw at any time.

Participants needed: 100
Trial details
Phase: Phase 1, Phase 2Age: 3-12Biological sex: AllType: InterventionalSponsor: Adia Med of Winter Park LLCUpdated: Jun 17, 2026Locations: 1
Eligibility criteria

Age 3-12 years [+4]

Severe allergies to study products [+4]

Status: Not yet recruiting

How Trunk Control Links Autism Severity to Functional Exercise Capacity in Children With ASD

The goal of this observational study is to learn if trunk control (the ability to balance and stabilize the upper body while sitting or moving) links autism severity to functional exercise capacity in children aged 4-12 years with Autism Spectrum Disorder (ASD). The main questions it aims to answer are: 1. Does trunk control explain why children with more severe ASD have lower functional exercise capacity? 2. Do trunk control and functional exercise capacity differ across ASD severity levels (Level 1, 2, and 3)? Participants will complete two assessments in a single 30-40 minute session during their routine clinic visit: 1. A trunk control test, where a trained physiotherapist observes seated balance and movement. 2. A 6-Minute Walk Test (6MWT), where the child moves along a flat hospital corridor for 6 minutes and the total distance covered is recorded as a measure of functional exercise capacity. No treatment or intervention is involved. All assessments are safe, non-invasive, and conducted at a tertiary care children's hospital in Pakistan.

Participants needed: 200
Trial details
Age: 4-12Biological sex: AllType: ObservationalSponsor: Dr. Mehak NaeemUpdated: Jun 10, 2026Locations: 1Duration: 1 Day
Eligibility criteria

Children aged 4-12 years (inclusive) at the time of assessment [+5]

Co-existing neurological condition independently affecting gait (e.g., cerebral... [+4]

Status: Recruiting

GAIP ASD Research Study

This clinical research study evaluates the safety and preliminary effects of AdiaVita (umbilical cord blood-derived stem cells and exosomes) combined with glutathione versus glutathione alone in people aged 3 and older with Autism Spectrum Disorder (ASD). In this randomized, participant-blinded crossover trial of about 100 participants, one group receives three monthly AdiaVita IV infusions plus glutathione, while the control group gets placebo saline infusions with the same glutathione regimen; the primary outcome is improvement on Autism Treatment Evaluation Checklist (ATEC) scores, with full safety follow-up through 12 months and optional crossover to AdiaVita for eligible controls. The treatment is investigational and not FDA-approved for autism, with no guaranteed benefit and risks including infusion reactions; participants pay $12,000 for the initial schedule, and all data remains confidential.

Participants needed: 100
Trial details
Phase: Phase 1Age: 3+Biological sex: AllType: InterventionalSponsor: Greater Atlanta Integrative PediatricsUpdated: Jun 3, 2026Locations: 2
Eligibility criteria

Age 3 years and up [+4]

Severe allergies to study products [+6]

Status: Recruiting

Online Evaluation of the Diagnostic Accuracy of BlinkLab's Digital Assessments for Autism

This observational study aims to evaluate how patterns of behavioral and sensorimotor responses measured using the BlinkLab Dx1 smartphone application relate to autism diagnoses in children ages 2 to 11. BlinkLab Dx1 is a non-invasive, smartphone-based application under development as a diagnostic aid for healthcare providers assessing autism. In this study, children who have undergone a neurodevelopmental assessment within the past 12 months will complete two short, video-based sessions using the BlinkLab Dx1 app. The app presents visual and auditory stimuli and records reflexive sensorimotor responses and patterns of repetitive behavior. Additionally, primary caregivers will answer a short questionnaire in the app about symptoms and development. Information about prior neurodevelopmental assessments, including documented DSM-5-based diagnoses from routine clinical practice, will be collected retrospectively. The study will examine how the app's neurobehavioral measurements relate to previously assigned clinical diagnoses. These paired data will be used to develop and evaluate a machine learning-based algorithm using separate training and testing datasets to assess whether patterns measured by BlinkLab Dx1 can help distinguish children with autism from children without an autism diagnosis. This study does not involve any treatment or medical intervention.

Participants needed: 1,000
Trial details
Age: 2-11Biological sex: AllType: ObservationalSponsor: Blinklab LimitedUpdated: May 15, 2026Locations: 1
Eligibility criteria

Age: Children between 2 to 11 years old [+4]

Device Compatibility: Parents without smartphone capabilities necessary for usin... [+3]

Status: Recruiting

An Examination of the Performance of QbMobile in Differential Diagnosis Associated With ADHD Symptoms

The purpose of this study is to evaluate QbMobile's ability to collect objective data to identify specific symptom profiles in differential diagnoses (ASD, MDD, Bipolar Disorder and Anxiety Disorder) that are common with ADHD.

Participants needed: 300
Trial details
Age: 6-60Biological sex: AllType: ObservationalSponsor: Qbtech ABUpdated: May 6, 2026Locations: 1
Eligibility criteria

Provide written informed consent (including parent/legal guardians consent when... [+5]

Intellectual disability designated by IQ<70; [+6]

Status: Not yet recruiting

Biomarkers of ASD/ADHD and Factors Affecting Anxiety and Depression in Children and Young Adults

The PUREMIND OS1/OS2 study is a multinational, prospective, longitudinal observational study designed to identify early neurophysiological, biological, environmental, and psychosocial markers associated with neurodevelopmental and mental health conditions from infancy through young adulthood. Observational Study 1 (OS1) follows infants and toddlers at high risk for Autism Spectrum Disorder (ASD) and Attention-Deficit/Hyperactivity Disorder (ADHD) to discover biomarkers predictive of later clinical diagnosis, using EEG, fNIRS, psychometric assessments, and biological samples. Observational Study 2 (OS2) includes children, adolescents, and young adults with ASD, ADHD, or Developmental Coordination Disorder (DCD) to identify environmental and biological factors causally linked to anxiety and depression symptoms, and to support the development of personalised criteria for evidence-based interventions. Approximately 800 participants will be recruited across 10 international clinical sites. The study aims to generate multi-domain data to support predictive modelling and inform future personalised mental-health prevention strategies across childhood and young adulthood.

Participants needed: 800
Trial details
Age: 6-25Biological sex: AllType: ObservationalSponsor: University of ExeterUpdated: May 6, 2026Locations: 1
Eligibility criteria

Infants born very preterm (<32 weeks) or extremely preterm (<28 weeks); or [+3]

Syndromic, chromosomal, or known genetic conditions. [+6]

Status: Not yet recruiting

Trial of Center-Based Early Start Denver Model vs. Pivotal Response Treatment in Children With Autism

The goal of this study is to compare two well-established early autism interventions, Early Start Denver Model (ESDM) and Pivotal Response Treatment (PRT), to better understand which approach is most effective for improving communication skills in young children with autism and which children may benefit most from each treatment. Additionally, after completing either the ESDM or PRT, some participants who meet specific clinical criteria may be offered home-based Developmental Reciprocity Treatment (DRT). The study will include boys and girls 2 to 4 years 11 months old diagnosed with ASD. The main questions this study aims to answer are whether center-based ESDM and center-based PRT improve communication skills in young children with autism, and whether certain children respond better to one treatment approach than the other. Participants will be randomly assigned to either ESDM or PRT for 24 weeks in a center-based program, attend treatment session 4 days per week (\~3 hours/day), complete developmental and autism assessments at baseline, 12 weeks, and 24 weeks, have a parent participate in weekly parent training sessions, and complete follow-up assessments at weeks 36 and 48.

Participants needed: 140
Trial details
Age: 2-4Biological sex: AllType: InterventionalSponsor: Stanford UniversityUpdated: Apr 17, 2026Locations: 1
Eligibility criteria

Children must be between 2 and 4 years, 11 months of age at enrollment [+5]

Current or lifetime diagnosis of a severe psychiatric disorder (e.g., bipolar di... [+5]

Status: Recruiting

Prospective Clinical Study on Human Umbilical Cord Mesenchymal Stem Cell-Derived Exosomes for the Treatment of Childhood Autism

This clinical study aims to evaluate whether a nasal spray containing exosomes derived from human umbilical cord mesenchymal stem cells (hUC-MSC-EXOs) can safely and effectively improve core symptoms in children aged 3-7 years with autism spectrum disorder (ASD). It is a 24-week, randomized, controlled, open-label trial. Forty pediatric patients with ASD will be randomly assigned at a 1:1 ratio to two groups: an active exosome nasal spray treatment group and a no-intervention control group. The treatment group will receive the nasal spray every other day, totaling 10 administrations throughout the study. The no-intervention control group will receive no experimental treatment but will undergo the same assessments and safety checks concurrently with the treatment group. This design aims to monitor the safety and efficacy of the hUC-MSC-EXOs nasal spray.

Participants needed: 40
Trial details
Phase: Phase 1, Phase 2Age: 3-7Biological sex: AllType: InterventionalSponsor: Dongfang People's HospitalUpdated: Apr 14, 2026Locations: 1
Eligibility criteria

Diagnosis meets the ICD-11 ASD criteria or DSM-5 ASD clinical diagnostic standar... [+5]

History of severe allergic reactions. [+13]

Status: Not yet recruiting

School-Based Sensory Processing and Daily Living Skills-Focused Occupational Therapy Program

This study aims to develop and evaluate a school-based occupational therapy program focused on sensory processing and activities of daily living for children with Autism Spectrum Disorder and Intellectual Disability. Sensory processing difficulties often affect school participation, behavior regulation, and independence in daily tasks. Although occupational therapy interventions have shown benefits in clinical settings, evidence for their use in schools is limited. The trial will take place at Vali Ayhan Çevik Special Education School and will enroll students aged 6 to 14 years. Participants will be randomly assigned to either an intervention group or a control group. The intervention group will receive weekly 50-minute occupational therapy sessions for 10 to 12 weeks, including sensory preparation, task-oriented practice, and strategies to support everyday skills. The control group will receive family education, a written home program, and routine school observation. Outcomes will be assessed at baseline, after the intervention, and at 4 to 6-week follow-up. The main outcome is change in Goal Attainment Scaling scores, which reflect progress toward individualized goals. Additional measures include functional ability, sensory processing, and demographic and clinical information. The study will also monitor feasibility and how closely the program is delivered as planned. This research is expected to provide evidence on the feasibility and effects of a standardized occupational therapy program in a school setting and to support the use of similar approaches in educational contexts.

Participants needed: 40
Trial details
Age: 6-14Biological sex: AllType: InterventionalSponsor: Çankırı Karatekin UniversityUpdated: Apr 9, 2026
Eligibility criteria

Regular school attendance (Anticipated ability to attend at least 70% of the pla... [+5]

Uncontrolled epilepsy or other medical conditions that may interfere with partic... [+7]

Status: Recruiting

An Empowering Parent Training Intervention to Increase Physical Activity in Preschool Aged Children With Autism

The goal of this clinical trial is to learn if WE PLAY for Parents can improve caregivers' knowledge, attitudes, confidence, and skills promoting physical activity with their young child with autism. The main questions it aims to answer are: (1) Do participants who complete WE PLAY for Parents improve their knowledge, behavior intentions, perceived behavior control, self-efficacy, and parenting practices related to physical activity promotion with their child (Primary Hypotheses); and (2) Do participants view WE PLAY for Parents as acceptable, understandable, and feasible \[secondary hypothesis)? Researchers will compare the WE PLAY for Parents group \[experimental arm\] to a Waitlist Control group to see if there are differences in the variables listed in the primary hypothesis. Participants will: (1) Complete a set of questionnaires at three timepoints: pre-training, post-training, and 3-month follow-up that each take between 10-15 minutes; (2) be randomly assigned to take the training over the next two weeks or be offered the training after 3 months. The online training takes about 90 minutes. It includes watching informational videos, viewing video clips of adults helping children be active, reading handouts on behavior management tips and social stories, participating in an anonymous discussion board with other parents, and completing a self-assessment.

Participants needed: 114
Trial details
Age: 18+Biological sex: AllType: InterventionalSponsor: Northeastern UniversityUpdated: Apr 8, 2026Locations: 1
Eligibility criteria

Parents or caregivers (who are at least 18 years of age) of children with a diag... [+3]

Parents or caregivers who do not have a child with autism. [+2]

Status: Recruiting

Coaching and Leadership in Autism Support Settings

Schools serve a large number of autistic children, yet face two critical gaps that stifle the delivery of evidence-based practices: 1) an intervention gap characterized by limited availability of evidence-based practices educators can use to address externalizing behaviors when they occur in the classroom; and 2) an implementation gap consisting of insufficient evidence-based practice fidelity and sustainment over time. To address these gaps, this project proposes a hybrid type 2 effectiveness-implementation trial that simultaneously tests: 1) the clinical effectiveness of an efficient, educator-delivered clinical intervention to reduce autistic children's externalizing behaviors (Research Units in Behavioral Interventions in Educational Settings; RUBIES), and 2) the implementation effectiveness of an organizational implementation strategy designed specifically to enhance sustainment of evidence-based practices in public schools (Helping Educational Leaders Mobilize evidence; HELM). Consistent with the National Institute of Mental Health (NIMH)'s experimental therapeutics approach, the project also examines the mechanisms through which RUBIES impacts clinical outcomes and through which HELM influences implementation outcomes. The proposed study directly responds to high priority research areas of the US Department of Health and Human Services Interagency Autism Coordinating Committee's Strategic Plan for Autism Research, which calls for expanded research on the translation of proven-efficacious interventions into the community, NIMH Strategic Priority 3.3 to test interventions for effectiveness in community practice settings, and NIMH Strategic Priority 4.2 to expedite adoption, sustained implementation, and continuous improvement of evidence-based mental health services. If successful, this study will have substantial public health impact because it will produce an effective intervention for a prevalent problem among a high impact population in schools across the United States of America and will determine how to sustain this (and other) intervention(s) with high fidelity, to the betterment of health.

Participants needed: 373
Trial details
Age: 5+Biological sex: AllType: InterventionalSponsor: University of California, Los AngelesUpdated: Apr 7, 2026Locations: 1
Eligibility criteria

Special or general education teachers, paraeducators, and other staff who provid... [+6]

SESBI-R total score <101 (i.e. T score 51+) [+1]

Status: Recruiting

Monitoring Daily Mobility in Children With Autism

Children with autism spectrum disorder (ASD) often show motor abnormalities and sleep disturbances that affect behavior, learning, and family quality of life. Emerging technologies such as wearable devices and markerless systems provide accessible tools for gait and sleep assessment, with actigraphy recommended for long-term monitoring in natural settings. Evidence also suggests links between sleep problems and sensory processing differences. This project, aims to integrate these approaches in a clinical-translational framework.

Participants needed: 80
Trial details
Age: 2-18Biological sex: AllType: InterventionalSponsor: IRCCS San Raffaele RomaUpdated: Apr 9, 2026Locations: 1
Eligibility criteria

Diagnosis of autism spectrum disorder (ASD) according to DSM-5 criteria [+5]

Skin contraindications to the wristband/fixation systems (known material allergi... [+4]

Status: Recruiting

Prospective Study to Determine the Prevalence of Signs of Central Sensitization in Adults With ASD Without Intellectual Developmental Disorders

Autism is a neurodevelopmental disorder (NDD) characterized by two key features: persistent deficits in communication and social interaction, and restricted, repetitive patterns of behavior, interests, and activities. Ninety-five percent of children aged 3 to 6 with autism spectrum disorder (ASD) have sensory peculiarities. In adulthood, this figure remains at 90%. This atypical sensory processing has been part of the DSM diagnostic criteria since 2013. Each sense can be affected by hypo- or hypersensitivity. In the continuum of this particular sensory processing, pain, which is defined as an unpleasant sensory and emotional experience, can be very present but also difficult to detect and manage. It is now established that there are other characteristics that impact pain in ASD: information processing time may be longer, referred to as "latency time," but there are also difficulties in representing the body schema and difficulties in identifying and/or interpreting perceptions. Expression may be atypical, and there may be an apparent lack of reaction to pain due to a lack of flexibility. All of these characteristics themselves vary over time (with age, the menstrual cycle, lack of sleep, fatigue, etc.), to the point that even pain specialists in pain clinics may not recognize them. It is therefore essential to carry out appropriate, individualized assessments. The scientific literature refers to the high frequency of painful events in ASD. For example, the prevalence of gastrointestinal disorders with their associated abdominal pain is significantly higher. Recent research has revealed that 82.4% of children and adolescents with ASD have at least one gastrointestinal symptom. Researchers have found that children with ASD are almost eight times more likely to have one or more chronic gastrointestinal symptoms than typically developing children. There are also more common comorbidities that facilitate or maintain chronic pain: Ehler Danlos syndrome and hypermobility spectrum disorders, IBD, ADHD, post-traumatic stress disorder, depression, migraines and tension headaches, anxiety disorders, epilepsy, small fiber pathologies, nutritional deficiencies, musculoskeletal disorders, etc. Mutations in certain genes involved in ASD (such as SCN9A, SHANK3, and CNTNAP2) lead to impaired neuronal function, producing different responses to pain, as demonstrated in both mouse and human models. The links between ASD and chronic pain are therefore complex. Sometimes it is the unusual characteristics of the pain that could lead to a diagnosis of ASD. The concept of central sensitization (CS), which underlies the type of pain known as "nociplastic," helps explain the state of pain hypersensitivity and pathologies such as fibromyalgia and irritable bowel syndrome. In 2022, Grant et al. found that 21% of adults with ASD surveyed in the cohort reported having a diagnosis of central sensitization syndrome (CSS), but 60% scored at or above the cut-off. This suggests that CS symptoms such as pain and fatigue are very common in people with autism, and perhaps more prevalent than in the general population. For example, three-quarters of women diagnosed with ASD and/or ADHD in childhood report chronic pain in adulthood. The issue is the disability associated with this chronic pain and the impairment of quality of life.

Participants needed: 100
Trial details
Age: 18+Biological sex: AllType: ObservationalSponsor: Groupe Hospitalier Mutualiste de GrenobleUpdated: Mar 27, 2026Locations: 1
Eligibility criteria

Age ≥ 18 years [+4]

Intellectual developmental disorder that prevents understanding of self-administ... [+1]

Status: Not yet recruiting

Exploring the Physiological Mechanisms of Austism Through Organoids

Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder affecting approximately 1% of the population, characterized by difficulties with social interaction and communication. Studies have identified more than 200 genes linked to ASD, particularly those involved in chromatin remodeling and synaptic neuronal connectivity (CHD8, SCN2A, NLGN3-4X, SHANK1-3). The goal of the project is to decipher the biological mechanisms underlying ASD in order to develop therapeutic strategies, using innovative preclinical models such as organoids.

Participants needed: 80
Trial details
Age: 2+Biological sex: AllType: ObservationalSponsor: Assistance Publique - Hôpitaux de ParisUpdated: Mar 27, 2026Locations: 1
Eligibility criteria

A child diagnosed with an autism spectrum disorder in accordance with clinical p... [+3]

Refusal to undergo a blood test [+2]

Status: Recruiting

Intensive Multimodal Neurorehabilitation Targeting Neuroplasticity in Pediatric Neurodevelopmental and Chromosomal Disorders

This observational study evaluates functional and developmental outcomes in pediatric participants undergoing a two week intensive multimodal neurorehabilitation program. The program is designed for children with neurodevelopmental disorders, including but not limited to cerebral palsy, autism spectrum disorder, developmental delay, hypoxic ischemic encephalopathy (HIE), and chromosomal or genetic abnormalities. Participants receive individualized therapy sessions for approximately 2.5 hours per day over a two week period. The intervention is not standardized but is tailored to each child's specific needs and may include components such as sensory integration, motor planning, reflex integration, oculomotor training, executive functioning activities, communication support, and other brain based therapeutic approaches. The purpose of this study is to observe changes in functional abilities, including attention, motor coordination, emotional regulation, communication, and activities of daily living. Outcomes are assessed using clinician observation and parent reported changes before and after the intensive program, with limited follow-up when available. This study does not assign participants to a specific treatment as part of a research protocol. Instead, it collects real world data from children already participating in a clinical therapy program to better understand potential benefits of intensive, individualized neurorehabilitation approaches.

Participants needed: 100
Trial details
Age: 4-12Biological sex: AllType: ObservationalSponsor: Healing Hope InternationalUpdated: Mar 25, 2026Locations: 1
Eligibility criteria

Pediatric participants between approximately 4 and 12 years of age at the time o... [+17]

Medical instability or acute medical condition that would prevent safe participa... [+5]

Status: Not yet recruiting

Research on Speech Development Trajectories and Predictive Models in Children With Autism Spectrum Disorder

Recent studies indicate that children with ASD have a significantly higher risk of co-occurring speech sound disorders than typically developing children. Early atypical speech development may be a critical yet overlooked bottleneck hindering their language improvement. Given the unique phonetic features of Mandarin, it is essential to investigate speech development in Mandarin-speaking children with ASD. This study aims to construct developmental trajectories and establish early identification and prognosis prediction models for this population.

Participants needed: 120
Trial details
Age: 18-60Biological sex: AllType: ObservationalSponsor: Children's Hospital of Chongqing Medical UniversityUpdated: Mar 17, 2026Duration: 3 Months
Eligibility criteria

Diagnosed as typically developing children by two or more associate chief physic... [+2]

Participants not meeting the age requirement. [+4]

Status: Recruiting

Modified and Context-Focused Sports Intervention in Adolescents With Autism: Study Protocol

Adolescents with Autism Spectrum Disorder (ASD) typically engage less in physical activities than their typically developing peers, influenced by intrinsic and extrinsic factors. Modified sports interventions, like Sports Stars Brazil, can improve motor skills and promote lifelong participation in sports by enhancing physical, social, and cognitive abilities. However, adolescents often face barriers to engaging in community sports and recreational activities after completing the program. PREP is an approach designed to address these barriers by modifying environments and empowering families. To date, no study has explored this combination in adolescents with ASD. Objective: This protocol assesses the effectiveness of combining Sports Stars Brazil with PREP to enhance participation and physical literacy in adolescents with ASD and explores participant and family perceptions. Method: A mixed-methods study with two phases: 1) a randomized controlled trial to investigate combined intervention's effects; and 2) evaluation of participant and family perceptions.

Participants needed: 52
Trial details
Age: 12-18Biological sex: AllType: InterventionalSponsor: Federal University of Minas GeraisUpdated: Mar 13, 2026Locations: 1
Eligibility criteria

Diagnosis of Autism Spectrum Disorder (ASD). [+2]

Cognitive limitations [+2]

Status: Not yet recruiting

Characterization of the Natural History of Microduplication Syndrome 7q11.23

7q11.23 duplication syndrome (7q duplication syndrome/7DUP) is caused by a microduplication of the 7q11.23 chromosomal region, encompassing 26-28 genes, including the GTF2I gene. This syndrome, often considered as a "mirror" phenotype of Williams-Beuren syndrome (WBS), is characterized by a wide range of neurodevelopmental impairments, including a neurodevelopmental disorder (NDD), autism spectrum disorders (ASD), selective mutism, mild dysmorphic features, and aortic dilation. Notably, one of the core clinical features of 7DUP is socialization impairment, which varies in severity across individuals. The GTF2I gene, identified as critical in the pathogenesis of both WBS and 7DUP, exhibits opposite expression patterns in the two syndromes, with reduced expression in WBS and overexpression in 7DUP. The gene's dysregulation in 7DUP plays a pivotal role in the pathogenesis of the associated NDD and social deficits. Despite progress in characterizing the genetic underpinnings of 7DUP, there remains a critical gap in understanding the developmental trajectory of socialization impairments in affected individuals, especially during their transition through different developmental stages, from early childhood to adulthood. Recent advancements in the study of neuronal models derived from induced pluripotent stem cells (iPSCs) and brain organoids have shed light on the molecular mechanisms driving 7DUP-related NDDs. Histone deacetylase inhibitors (HDAC inhibitors), which have been widely used in oncology, have shown promising preliminary results in reducing abnormal GTF2I expression in glutamatergic neurons differentiated from 7DUP patient-derived iPSCs. Preclinical studies in mouse models further demonstrated that these drugs can ameliorate socialization deficits, highlighting their therapeutic potential in addressing the core neurodevelopmental challenges in 7DUP. However, despite these advancements, no longitudinal clinical studies have characterized the developmental trajectory of socialization impairments in 7DUP patients. Understanding this trajectory is critical, as it can inform the timing and potential impact of therapeutic interventions, such as HDAC inhibitors. Given the complexity and variability of the 7DUP phenotype, a comprehensive clinical characterization of socialization impairments across the lifespan is essential to improve diagnostic accuracy, optimize intervention strategies, and ultimately improve patient outcomes. The aim of this research is to characterize the developmental trajectory of socialization impairments in patients with 7DUP, from early childhood through adulthood. By identifying patterns of socialization difficulties, this innovative study will allow to efficiently prepare future therapeutic trials, by specifying the phenotype of the patients, and by determining the most relevant outcome measures, taking into account, on one hand, their neurodevelopmental involvement and, on the other hand, the type of experimental design to be used in the context of rare diseases.

Participants needed: 15
Trial details
Age: 5-50Biological sex: AllType: InterventionalSponsor: Hospices Civils de LyonUpdated: Mar 13, 2026Locations: 2
Eligibility criteria

Diagnosis of 7q11.23 microduplication confirmed by Chromosomal Microarray Analys... [+4]

Refusal of the subject and/or the subject's parents/legal guardian to sign the i... [+3]

Status: Recruiting

Role of the Gut Vascular Barrier and Microbiota in Autism Spectrum Disorders

Recent research links gut microbiota alterations to Autism Spectrum Disorders (ASD), a neurobiological condition with multifactorial bases. In some ASD patients, altered gut flora and increased intestinal permeability are observed, influencing the central nervous system's development and function. Chronic gastrointestinal (GI) symptoms are commonly associated with ASD and correlate with its severity. This non-pharmacological interventional clinical study aims to investigate the role of gut microbiota on ASD and the effectiveness of postbiotic-based dietary supplements in children aged 3-8 years old. Gastrointestinal symptoms, behavioral profile and analysis of intestinal metagenomic and metabolomic profiles will be assessed before and after one-month treatment. The results of the study could enhance understanding of non-pharmacological therapeutic approaches in ASD and improve clinical management strategies and the behavioural functioning for children with ASD.

Participants needed: 90
Trial details
Phase: Phase 2, Phase 3Age: 3-8Biological sex: AllType: InterventionalSponsor: Fondazione I.R.C.C.S. Istituto Neurologico Carlo BestaUpdated: Mar 4, 2026Locations: 2
Eligibility criteria

Diagnosis of ASD according to DSM-5 diagnostic criteria; [+6]

Exclusion Criteria [+5]

Status: Not yet recruiting

Xenon Therapy for Children With Autism Spectrum Disorder

This study aims to evaluate the efficacy and safety of inhaled xenon for the treatment of children with autism spectrum disorder (ASD). The primary objective is to determine whether short-term inhalational xenon therapy can improve social functioning in children with ASD, as measured by changes in the Social Responsiveness Scale (SRS). Safety and tolerability of xenon inhalation in the pediatric population will also be assessed. In this randomized, placebo-controlled trial, participants will receive either inhaled xenon or a placebo gas (medical air without xenon) to compare treatment effects. Participants will: Inhale 25% xenon or placebo for 10 minutes per day for 10 consecutive days Attend two clinical visits: one immediately after completion of the intervention and one at 3 months post-intervention for follow-up assessments and safety evaluations

Participants needed: 72
Trial details
Phase: Phase 1, Phase 2Age: 4-18Biological sex: AllType: InterventionalSponsor: The Children's Hospital of Zhejiang University School of MedicineUpdated: Feb 27, 2026Locations: 1
Eligibility criteria

Aged 4-18 years, with no gender restriction. [+6]

Having other major neurological diseases (e.g., epilepsy, cerebral palsy), sever... [+4]

Status: Recruiting

L-theanine and Paraxanthine for Cognitive Improvement in Adults With ADHD and ASD

This pilot study will test whether combining L-theanine and paraxanthine improves sustained attention, inhibitory control, and overall cognition in adults with ADHD and ASD. Two parallel randomized, single-blinded, repeated-measures crossover trials will be conducted. Participants will complete neuropsychological testing, fMRI scanning, and self-report measures following administration of the L-theanine-paraxanthine combination compared to placebo.

Participants needed: 24
Trial details
Biological sex: MaleType: InterventionalSponsor: Texas Tech University Health Sciences CenterUpdated: Feb 5, 2026Locations: 1
Eligibility criteria

Subjects with gross visual or auditory impairments that might limit their abilit... [+15]

Status: Recruiting

Transcranial Direct Current Stimulation in Children With Autism Spectrum Disorder

Background: Transcranial Direct Current Stimulation (tDCS) is a form of non-invasive brain stimulation that has aroused increased interests in the past decade. Not only that it is transient with little side-effects, and can be well-tolerated by children, it is also affordable and readily accessible, making it an appealing treatment option for autism spectrum disorder (ASD). Objective: (1) To assess the therapeutic effects of tDCS when combined with cognitive training for 10 consecutive weekdays on improving cognitive processing in children with ASD, relative to control group receiving sham-stimulation, and (2) to evaluate the associated neural mechanisms underlying the treatment effect of tDCS on children with ASD. Methods: To assess the therapeutic effects of tDCS, 90 adolescents with ASD (age 6-12 years) will be randomly assigned to active- (n=45), or sham- (n=45) tDCS groups. Twenty-minute sessions of tDCS stimulation to the left dorsolateral prefrontal cortex (DLPRC) will be provided on 10 consecutive weekdays, in conjunction with cognitive training exercises. Participants with a head circumference of less than 53 cm will receive 1.0 mA of stimulation, while those with a circumference of 53 cm or greater will receive 1.5 mA. EEG, fNIRS and neuropsychological tests will be administered before, immediately after, and 2 months after the series of tDCS sessions. Hypothesis: The investigators hypothesize that children with ASD who are randomly assigned to receive a montage of prefrontal tDCS, with cathode (inhibitory) placed over left DLPFC and anode (excitatory) over right supraorbital region) will evidence greater improvement in executive function (primary outcome) than children with ASD who are randomly assigned to receive sham-tDCS. In addition to testing the primary clinical outcome, stated above, in planned exploratory analyses, the investigators will also examine the effects of tDCS on secondary outcome measures of cognitive function, including information processing speed, working memory, inhibitory control, and cognitive flexibility; and conduct exploratory mediation analyses to better understand the potential neurophysiological factors underlying the therapeutic effects of tDCS. This will include E/I ratio as exploratory mediator variables. As these secondary analyses are exploratory, the investigators will report them as such in presentations and published papers, and the investigators will not draw definitive conclusions from them. Rather, they will be used to better understand the potential impact of tDCS and the mechanisms underlying impact, and to inform future research.

Participants needed: 90
Trial details
Age: 8-12Biological sex: AllType: InterventionalSponsor: The Hong Kong Polytechnic UniversityUpdated: Feb 6, 2026Locations: 1
Eligibility criteria

being 8-12 years old [+3]

with severe motor dysfunctions [+1]

Status: Recruiting

Sleep Intervention in Children With ASD

The goal of this randomised controlled trial is to examine the following research questions: 1) whether digitally delivered parent-based behavioural sleep intervention with or without personalised support is effective in improving sleep, clinical and daytime symptoms, and 2) whether such interventions can also improve parental sleep, mental health, and parenting stress in children with ASD and insomnia.

Participants needed: 195
Trial details
Age: 6-12Biological sex: AllType: InterventionalSponsor: The University of Hong KongUpdated: Feb 9, 2026Locations: 1
Eligibility criteria

(1) Parents/caregivers with a child aged 6 to 12 years old, and attending a loca... [+5]

(1) Children with diagnosed intellectual disability; [+2]

Status: Not yet recruiting

Internalized Symptoms in Adolescents With Autism Spectrum Disorder (ASD) and Typically Developing Adolescents : Gaining Insight Into Coping Strategies and the Psychological Processes Involved

Introduction: Adolescents with autism spectrum disorder (ASD) have more mental health problems than typically developping adolescents (without ASD). Coping strategies are a key concern for adolescents with ASD in managing depressive and anxiety symptoms. Currently, few studies have examined the coping strategies used by adolescents with ASD. The methodological considerations underscore the need for an assessment method tailored to adolescents with ASD. Finally, although current data are still limited, the results suggest that there may be differences between the coping strategies used by adolescents with ASD and typically developing adolescents, thus calling for more in-depth comparative research. Objectives: This study aims to validate a coping strategies assessment method adapted for adolescents with ASD (1) and to examine coping strategies associated with internalizing symptoms (2) Population: 252 participants: 84 adolescents with ASD (1), 84 adolescents with autistic traits but no clinical diagnosis of ASD (2), and 84 typically developing adolescents (3). The age range is 12-17 years. Study design: The study is divided into two parts: a cross-sectional part (T) and a longitudinal part (L). * The cross-sectional part will include three meetings spread over a period of approximately three months (approximately one meeting per month). * The longitudinal part will consist of a meeting scheduled one year after the last meeting of the cross-sectional part.

Participants needed: 252
Trial details
Age: 12-17Biological sex: AllType: ObservationalSponsor: Université Catholique de LouvainUpdated: Jan 29, 2026
Eligibility criteria

12-17 years [+1]

Intellectual disability

Status: Recruiting

Portable Sleep Monitors in Children With Autism Spectrum Disorder

The goal of this study is to evaluate the ability of a portable sleep monitor to detect obstructive sleep apnea in children with autism spectrum disorder (ASD). The main study objectives are to: 1. Evaluate the correlation between the obstructive apnea-hypopnea index (OAHI) on a portable sleep monitor and an in-laboratory polysomnogram (PSG); 2. Determine the sensitivity and specificity of a portable sleep monitor to diagnose obstructive sleep apnea (OSA); 3. Evaluate patient and family preferences for sleep testing.

Participants needed: 20
Trial details
Age: 6-18Biological sex: AllType: ObservationalSponsor: Lena XiaoUpdated: Jan 26, 2026Locations: 1
Eligibility criteria

Children between 6 to 18 years of age, AND; [+3]

Children who are currently using respiratory therapy [+2]