{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=STX209",
    "query": {
      "intervention": "STX209"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 13,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=STX209&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T18:34:56.625Z",
  "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": "NCT00892580",
      "title": "Biomarker and DNA Collection in Subjects Participating in Protocol 22003",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fragile X Syndrome"
      ],
      "interventions": [
        {
          "name": "STX209",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Years to 17 Years"
      },
      "enrollment_count": 32,
      "start_date": "2009-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-07-31",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • New Haven, Connecticut + 5 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00892580"
    },
    {
      "nct_id": "NCT01013480",
      "title": "An Open Label Extension Study of STX209 in Subjects With Fragile X Syndrome",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Fragile X Syndrome"
      ],
      "interventions": [
        {
          "name": "Arbaclofen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "6 Years to 40 Years"
      },
      "enrollment_count": 45,
      "start_date": "2009-11",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2012-12-20",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 9,
      "location_summary": "Los Angeles, California • Sacramento, California • Chicago, Illinois + 6 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Staten Island",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01013480"
    },
    {
      "nct_id": "NCT04271332",
      "title": "Safety, Tolerability, and Efficacy of Arbaclofen in 16p11.2 Deletion",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "16P11.2 Deletion Syndrome"
      ],
      "interventions": [
        {
          "name": "Arbaclofen",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Clinical Research Associates, LLC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "5 Years to 17 Years"
      },
      "enrollment_count": 60,
      "start_date": "2022-09-01",
      "completion_date": "2025-03-23",
      "has_results": false,
      "last_update_posted_date": "2024-05-30",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 4,
      "location_summary": "Boston, Massachusetts • New York, New York • Houston, Texas + 1 more",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04271332"
    },
    {
      "nct_id": "NCT01288716",
      "title": "Study of Arbaclofen for the Treatment of Social Withdrawal in Subjects With Autism Spectrum Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Autism Spectrum Disorders"
      ],
      "interventions": [
        {
          "name": "Arbaclofen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "5 Years to 21 Years"
      },
      "enrollment_count": 150,
      "start_date": "2011-05",
      "completion_date": "2012-09",
      "has_results": false,
      "last_update_posted_date": "2013-07-31",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 24,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Sacramento, California + 21 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orange City",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01288716"
    },
    {
      "nct_id": "NCT01706523",
      "title": "Open Label Extension Study of STX209 (Arbaclofen) in Autism Spectrum Disorders",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Autism Spectrum Disorders"
      ],
      "interventions": [
        {
          "name": "STX209 (arbaclofen)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "5 Years to 21 Years"
      },
      "enrollment_count": 165,
      "start_date": "2011-11",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2013-07-31",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 25,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Sacramento, California + 22 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orange City",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01706523"
    },
    {
      "nct_id": "NCT02278328",
      "title": "MEG Study of Acute STX209 Effects in ASD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Autism Disorder"
      ],
      "interventions": [
        {
          "name": "STX209 (15mg)",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "STX209 (30mg)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Timothy Roberts",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "17 Years",
        "sex": "MALE",
        "summary": "14 Years to 17 Years · Male only"
      },
      "enrollment_count": 25,
      "start_date": "2016-02",
      "completion_date": "2019-09-27",
      "has_results": true,
      "last_update_posted_date": "2019-10-21",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02278328"
    },
    {
      "nct_id": "NCT01064973",
      "title": "An Open Label Extension Study of STX209 in Subjects With Autism Spectrum Disorders",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Autism Spectrum Disorders"
      ],
      "interventions": [
        {
          "name": "arbaclofen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Years to 17 Years"
      },
      "enrollment_count": 32,
      "start_date": "2010-02",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2012-12-20",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • New Haven, Connecticut + 5 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01064973"
    },
    {
      "nct_id": "NCT00823368",
      "title": "Biomarker Testing and DNA Collection in Subjects Participating in Protocol 22001",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fragile X Syndrome"
      ],
      "interventions": [
        {
          "name": "STX209",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "6 Years to 40 Years"
      },
      "enrollment_count": null,
      "start_date": "2009-01",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-07-31",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 11,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Sacramento, California + 8 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00823368"
    },
    {
      "nct_id": "NCT00846547",
      "title": "Open-Label Study of the Safety and Tolerability of STX209 in Subjects With Autism Spectrum Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Autism Spectrum Disorders"
      ],
      "interventions": [
        {
          "name": "Arbaclofen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Years to 17 Years"
      },
      "enrollment_count": 32,
      "start_date": "2009-02",
      "completion_date": "2010-09",
      "has_results": true,
      "last_update_posted_date": "2013-06-14",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • New Haven, Connecticut + 5 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00846547"
    },
    {
      "nct_id": "NCT01555333",
      "title": "An Open Label Extension Study in Subjects With Fragile X Syndrome",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Fragile X Syndrome"
      ],
      "interventions": [
        {
          "name": "arbaclofen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seaside Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "5 Years to 50 Years"
      },
      "enrollment_count": 357,
      "start_date": "2011-11",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2013-07-31",
      "last_synced_at": "2026-09-06T18:34:56.625Z",
      "location_count": 23,
      "location_summary": "Phoenix, Arizona • Long Beach, California • Sacramento, California + 20 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01555333"
    }
  ]
}