{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Cognitive+Developmental+Delay",
    "query": {
      "condition": "Cognitive Developmental Delay"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-25T23:19:26.771Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT05600946",
      "title": "Characterization of Dysmorphology in Subjects With Creatine Transporter Deficiency",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cognitive Disorder",
        "Metabolic Disease",
        "Autism Spectrum Disorder"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "40 Years",
        "sex": "MALE",
        "summary": "2 Years to 40 Years · Male only"
      },
      "enrollment_count": 19,
      "start_date": "2022-10-24",
      "completion_date": "2026-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05600946"
    },
    {
      "nct_id": "NCT05201534",
      "title": "Interventions in Mathematics and Cognitive Skills",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Math Learning Disability",
        "Child Development",
        "Developmental Disability",
        "Learning Disabilities",
        "Learning Disabled",
        "Learning Curve",
        "Mathematics Disorder",
        "Dyscalculia",
        "Dyscalculia, Primary",
        "Dyscalculia, Acquired",
        "Specific Learning Disorder, With Impairment in Mathematics",
        "Individuality",
        "Behavior, Child",
        "Behavior and Behavior Mechanisms",
        "Behavior",
        "Decision Making",
        "Neuronal Plasticity",
        "Cognition",
        "Cognition Disorder",
        "Cognitive Dysfunction",
        "Cognitive Change",
        "Cognitive Impairment, Mild",
        "Cognitive Developmental Delay",
        "Cognitive Orientation",
        "Cognitive Delay, Mild",
        "Cognitive Deficits, Mild",
        "Cognitive Abnormality",
        "Neuroscience"
      ],
      "interventions": [
        {
          "name": "Interventions in Mathematics and Cognitive Skills - Experimental",
          "type": "OTHER"
        },
        {
          "name": "Interventions in Mathematics and Cognitive Skills - Active Comparator",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "6 Years to 12 Years"
      },
      "enrollment_count": 180,
      "start_date": "2023-05-05",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-06-25",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05201534"
    },
    {
      "nct_id": "NCT00065273",
      "title": "Atypical Neuroleptic Drugs in People With Mental Retardation/Developmental Delay",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Mental Retardation",
        "Developmental Delay Disorder"
      ],
      "interventions": [
        {
          "name": "risperidone",
          "type": "DRUG"
        },
        {
          "name": "clozapine",
          "type": "DRUG"
        },
        {
          "name": "olanzapine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "6 Years to 60 Years"
      },
      "enrollment_count": 50,
      "start_date": "1998-07",
      "completion_date": "2001-06",
      "has_results": false,
      "last_update_posted_date": "2005-06-24",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Lawrence, Kansas",
      "locations": [
        {
          "city": "Lawrence",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00065273"
    },
    {
      "nct_id": "NCT00743730",
      "title": "Parent Nurse Controlled Analgesic in Pediatric Patients With Developmental Delay",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Post Operative Pain"
      ],
      "interventions": [
        {
          "name": "Pain and standard side effect management for PNCA with basal method.",
          "type": "OTHER"
        },
        {
          "name": "Pain and standard side effect management with PNCA without basal",
          "type": "OTHER"
        },
        {
          "name": "Pain and standard side effect management with IV on an as needed basis method.",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "4 Years to 18 Years"
      },
      "enrollment_count": 94,
      "start_date": "2005-06",
      "completion_date": "2010-02",
      "has_results": true,
      "last_update_posted_date": "2019-08-28",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00743730"
    },
    {
      "nct_id": "NCT04100863",
      "title": "A Non-Interventional Pilot Study to Explore the Role of Gut Flora in Autism",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Autism",
        "Autism Spectrum Disorder",
        "Autistic Disorder",
        "Autism, Akinetic",
        "Autism; Atypical",
        "Autism; Psychopathy",
        "Autism Fragile Syndrome X",
        "Autism With High Cognitive Abilities",
        "Autism-Related Speech Delay",
        "Autism, Susceptibility to, 6",
        "Autism Spectrum Disorder High-Functioning",
        "Autistic Thinking",
        "Autism, Susceptibility to, X-Linked 6",
        "Autistic Behavior"
      ],
      "interventions": [
        {
          "name": "No Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "ProgenaBiome",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-03-02",
      "completion_date": "2030-06",
      "has_results": false,
      "last_update_posted_date": "2025-06-05",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Ventura, California",
      "locations": [
        {
          "city": "Ventura",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04100863"
    },
    {
      "nct_id": "NCT07670000",
      "title": "Mental And Speech Developmental Delay Autism Spectrum-Type Behavioral Disorder",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Autism Spectrum Disorder (ASD)",
        "Central Auditory Processing Disorder",
        "Nervous System Disorder",
        "Neurological Disorder"
      ],
      "interventions": [
        {
          "name": "Audio fairy tales",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Pisareva Citadel Group LLC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "3 Years to 70 Years"
      },
      "enrollment_count": 1,
      "start_date": "2026-02-27",
      "completion_date": "2026-11",
      "has_results": false,
      "last_update_posted_date": "2026-06-25",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07670000"
    },
    {
      "nct_id": "NCT02059356",
      "title": "Ammonia Levels and Cognitive Impairment",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Dementia",
        "Cognitive Decline",
        "Cognitive Impairment",
        "Developmental Delay"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 17,
      "start_date": "2014-01",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2015-03-17",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02059356"
    },
    {
      "nct_id": "NCT05391633",
      "title": "Maternal Voice and Quantitative EEG (qEEG)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prematurity",
        "Development Delay",
        "Premature Birth"
      ],
      "interventions": [
        {
          "name": "Recorded Maternal Voice",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Placebo Recording",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of New Mexico",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "28 Weeks",
        "maximum_age": "33 Weeks",
        "sex": "ALL",
        "summary": "28 Weeks to 33 Weeks"
      },
      "enrollment_count": 14,
      "start_date": "2022-02-15",
      "completion_date": "2024-06-12",
      "has_results": false,
      "last_update_posted_date": "2025-09-15",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05391633"
    },
    {
      "nct_id": "NCT04345185",
      "title": "Effects of Infant Egg Consumption on Child Health and Cognition Development",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Growth & Development",
        "Obesity",
        "Cardiovascular Risk Factor",
        "Metabolic Syndrome",
        "Food Allergy",
        "Cognitive Developmental Delay"
      ],
      "interventions": [
        {
          "name": "Infant egg consumption (i.e., age of introduction and frequency of intake)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "State University of New York at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "15 Years",
        "sex": "ALL",
        "summary": "0 Years to 15 Years"
      },
      "enrollment_count": 5374,
      "start_date": "1999-01-01",
      "completion_date": "2019-11-30",
      "has_results": false,
      "last_update_posted_date": "2020-10-22",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04345185"
    },
    {
      "nct_id": "NCT07493096",
      "title": "Intensive Multimodal Neurorehabilitation Targeting Neuroplasticity in Pediatric Neurodevelopmental and Chromosomal Disorders",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Neurodevelopmental Disorders",
        "Neurodevelopmental Disorders (NDD)",
        "Neurodevelopmental Disorders and Developmental Abnormalities",
        "Developmental Delay (Disorder)",
        "Cerebral Palsy (CP)",
        "Cerebral Palsy Hemiparetic Cerebral Palsy Spasticity Gait Disorders, Neurologic Postural Balance Impairment",
        "Cerebral Palsy Infantile",
        "Cerebral Palsy Spastic Hemiplegic",
        "Cerebral Palsy, Dyskinetic",
        "Autism Spectrum Disorder",
        "Autism Spectrum Disorder (ASD",
        "Hypoxic Ischemic Encephalopathy",
        "Hypoxic Ischemic Encephalopathy (HIE)",
        "Traumatic Brain Injury (TBI)",
        "Sensory Processing Disorder",
        "Chromosomal Abnormalities",
        "Genetic Disorders",
        "Down Syndrome (Trisomy 21)",
        "Fragile X Syndrome (FXS)",
        "RETT Syndrome With Proven MECP2 Mutation",
        "Williams Syndrome",
        "22q11.2 Deletion Syndrome",
        "Sensorimotor Integration"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Healing Hope International",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "4 Years to 12 Years"
      },
      "enrollment_count": 100,
      "start_date": "2026-03-01",
      "completion_date": "2036-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-25",
      "last_synced_at": "2026-06-25T23:19:26.771Z",
      "location_count": 1,
      "location_summary": "The Woodlands, Texas",
      "locations": [
        {
          "city": "The Woodlands",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07493096"
    }
  ]
}