{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Syndrome+X",
    "query": {
      "condition": "Syndrome X"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 483,
    "total_pages": 49,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Syndrome+X&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-21T21:35:58.101Z",
  "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": "NCT01998633",
      "title": "Reduced Intensity Conditioning for Hemophagocytic Syndromes or Selected Primary Immune Deficiencies (BMT CTN 1204)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hemophagocytic Lymphohistiocytosis",
        "Chronic Active Epstein-Barr Virus Infection",
        "Chronic Granulomatous Disease",
        "HIGM-1",
        "Leukocyte Adhesion Deficiency",
        "IPEX"
      ],
      "interventions": [
        {
          "name": "Hematopoietic Stem Cell Transplant",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Months",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "4 Months to 45 Years"
      },
      "enrollment_count": 47,
      "start_date": "2013-12",
      "completion_date": "2016-12",
      "has_results": true,
      "last_update_posted_date": "2022-12-08",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 19,
      "location_summary": "Birmingham, Alabama • Washington D.C., District of Columbia • Atlanta, Georgia + 16 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01998633"
    },
    {
      "nct_id": "NCT02531334",
      "title": "Effects of TA-65, a Telomerase Activator on Metabolic Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Metabolic Syndrome X"
      ],
      "interventions": [
        {
          "name": "TA-65",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Connecticut",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "32 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "32 Years to 70 Years"
      },
      "enrollment_count": 40,
      "start_date": "2015-08",
      "completion_date": "2018-06",
      "has_results": false,
      "last_update_posted_date": "2018-10-10",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 1,
      "location_summary": "Storrs, Connecticut",
      "locations": [
        {
          "city": "Storrs",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02531334"
    },
    {
      "nct_id": "NCT01461304",
      "title": "Compassionate Use of Triheptanoin (C7) for Inherited Disorders of Energy Metabolism",
      "overall_status": "NO_LONGER_AVAILABLE",
      "study_type": "EXPANDED_ACCESS",
      "phases": [],
      "conditions": [
        "Very Long-chain acylCoA Dehydrogenase (VLCAD) Deficiency",
        "Carnitine Palmitoyltransferase Deficiencies (CPT1, CPT2)",
        "Mitochondrial Trifunctional Protein Deficiency",
        "Long-chain Hydroxyacyl-CoA Dehydrogenase Deficiency",
        "Glycogen Storage Disorders",
        "Pyruvate Carboxylase Deficiency Disease",
        "ACYL-CoA DEHYDROGENASE FAMILY, MEMBER 9, DEFICIENCY of",
        "Barth Syndrome"
      ],
      "interventions": [
        {
          "name": "triheptanoin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Jerry Vockley, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "1 Month and older"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2021-12-10",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01461304"
    },
    {
      "nct_id": "NCT05418049",
      "title": "Evaluating the Neurophysiologic and Clinical Effects of Single Dose Drug Challenge",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Fragile X Syndrome"
      ],
      "interventions": [
        {
          "name": "Baclofen",
          "type": "DRUG"
        },
        {
          "name": "Memantine",
          "type": "DRUG"
        },
        {
          "name": "Roflumilast",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 45,
      "start_date": "2022-09-08",
      "completion_date": "2026-03-05",
      "has_results": false,
      "last_update_posted_date": "2025-12-23",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05418049"
    },
    {
      "nct_id": "NCT02413450",
      "title": "Derivation of Human Induced Pluripotent Stem (iPS) Cells to Heritable Cardiac Arrhythmias",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Inherited Cardiac Arrythmias",
        "Long QT Syndrome (LQTS)",
        "Brugada Syndrome (BrS)",
        "Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT)",
        "Early Repolarization Syndrome (ERS)",
        "Arrhythmogenic Cardiomyopathy (AC, ARVD/C)",
        "Hypertrophic Cardiomyopathy (HCM)",
        "Dilated Cardiomyopathy (DCM)",
        "Muscular Dystrophies (Duchenne, Becker, Myotonic Dystrophy)",
        "Normal Control Subjects"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 100,
      "start_date": "2013-08",
      "completion_date": "2031-08",
      "has_results": false,
      "last_update_posted_date": "2026-01-16",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02413450"
    },
    {
      "nct_id": "NCT06088589",
      "title": "Speech-in-noise Perception in Autism and Fragile X",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Autism Spectrum Disorder",
        "Fragile X Syndrome"
      ],
      "interventions": [
        {
          "name": "Mismatch negativity",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "15 Years to 35 Years"
      },
      "enrollment_count": 60,
      "start_date": "2023-11-10",
      "completion_date": "2026-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-03-19",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06088589"
    },
    {
      "nct_id": "NCT00654433",
      "title": "ALD-101 Adjuvant Therapy of Unrelated Umbilical Cord Blood Transfusion (UCBT) in Patients With Inherited Metabolic Diseases",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Inherited Metabolic Diseases",
        "Lysosomal Storage Disorders",
        "Peroxisomal Storage Diseases",
        "Inborn Errors of Metabolism",
        "Mucopolysaccharidosis"
      ],
      "interventions": [
        {
          "name": "ALD-101",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Aldagen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "16 Years",
        "sex": "ALL",
        "summary": "Up to 16 Years"
      },
      "enrollment_count": 40,
      "start_date": "2008-03",
      "completion_date": "2011-11",
      "has_results": false,
      "last_update_posted_date": "2014-07-08",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California • New York, New York • Durham, North Carolina",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00654433"
    },
    {
      "nct_id": "NCT02769949",
      "title": "Pediatric Patients With Metabolic or Other Genetic Disorders",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Genetic Disorder",
        "Asperger Disorder",
        "Autism Spectrum Disorder",
        "Fragile X Syndrome",
        "Developmental Delay"
      ],
      "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": "1 Year",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "1 Year to 99 Years"
      },
      "enrollment_count": 96,
      "start_date": "2016-05-03",
      "completion_date": "2025-07-08",
      "has_results": false,
      "last_update_posted_date": "2025-12-02",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02769949"
    },
    {
      "nct_id": "NCT03041324",
      "title": "Ascending Dose Study of Genome Editing by the Zinc Finger Nuclease (ZFN) Therapeutic SB-913 in Subjects With MPS II",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Mucopolysaccharidosis II",
        "MPS II"
      ],
      "interventions": [
        {
          "name": "SB-913",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Sangamo Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "5 Years to 65 Years"
      },
      "enrollment_count": 9,
      "start_date": "2017-05-11",
      "completion_date": "2021-05-07",
      "has_results": true,
      "last_update_posted_date": "2022-10-25",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 5,
      "location_summary": "Oakland, California • Chicago, Illinois • New York, New York + 2 more",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03041324"
    },
    {
      "nct_id": "NCT03837483",
      "title": "A Clinical Study to Evaluate the Use of a Cryopreserved Formulation of OTL-103 in Subjects With Wiskott-Aldrich Syndrome",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Wiskott-Aldrich Syndrome"
      ],
      "interventions": [
        {
          "name": "OTL-103",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "Fondazione Telethon",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "Up to 65 Years"
      },
      "enrollment_count": 10,
      "start_date": "2019-01-21",
      "completion_date": "2027-09",
      "has_results": false,
      "last_update_posted_date": "2025-09-29",
      "last_synced_at": "2026-07-21T21:35:58.101Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03837483"
    }
  ]
}