{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Ascendis+Pharma+A%2FS",
    "query": {
      "sponsor": "Ascendis Pharma A/S"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 22,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Ascendis+Pharma+A%2FS&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T07:46:37.815Z",
  "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": "NCT07221851",
      "title": "Trial Investigating the Efficacy and Safety of Weekly Lonapegsomatropin Compared to Daily Somatropin in Children and Adolescents With Short Stature or Growth Failure Due to Growth Hormone Sufficient Disorders",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Turner Syndrome",
        "Short Stature Homeobox Gene Mutation",
        "Idiopathic Short Stature",
        "Small for Gestational Age at Delivery"
      ],
      "interventions": [
        {
          "name": "Lonapegsomatropin [SKYTROFA®]",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Somatropin Pen Injector",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "Ascendis Pharma A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "2 Years to 17 Years"
      },
      "enrollment_count": 186,
      "start_date": "2025-12-12",
      "completion_date": "2029-03",
      "has_results": false,
      "last_update_posted_date": "2026-09-30",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 23,
      "location_summary": "Palo Alto, California • Sacramento, California • Aurora, Colorado + 19 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Centennial",
          "state": "Colorado"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07221851"
    },
    {
      "nct_id": "NCT05775523",
      "title": "A Post-Authorisation Safety Study (PASS) of Patients Treated With Lonapegsomatropin",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Growth Hormone Deficiency"
      ],
      "interventions": [
        {
          "name": "No intervention",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma Endocrinology Division A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "1 Year to 18 Years"
      },
      "enrollment_count": 500,
      "start_date": "2023-03-20",
      "completion_date": "2033-03",
      "has_results": false,
      "last_update_posted_date": "2026-02-04",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 27,
      "location_summary": "Phoenix, Arizona • Orange, California • Sacramento, California + 23 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Centennial",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05775523"
    },
    {
      "nct_id": "NCT04701203",
      "title": "A Trial Investigating the Safety, Tolerability and Efficacy of TransCon PTH Administered Daily in Adults With Hypoparathyroidism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypoparathyroidism",
        "Endocrine System Diseases",
        "Parathyroid Diseases"
      ],
      "interventions": [
        {
          "name": "TransCon PTH",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Placebo",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "Ascendis Pharma Bone Diseases A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 84,
      "start_date": "2021-02-16",
      "completion_date": "2025-01-21",
      "has_results": true,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 9,
      "location_summary": "San Francisco, California • Chicago, Illinois • Rochester, Minnesota + 6 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Reno",
          "state": "Nevada"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04701203"
    },
    {
      "nct_id": "NCT04085523",
      "title": "A Dose Escalation Trial Evaluating Safety, Efficacy, and Pharmacokinetics of TransCon CNP Administered Once Weekly in Prepubertal Children With Achondroplasia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Achondroplasia"
      ],
      "interventions": [
        {
          "name": "TransCon CNP",
          "type": "DRUG"
        },
        {
          "name": "Placebo for TransCon CNP",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "10 Years",
        "sex": "ALL",
        "summary": "2 Years to 10 Years"
      },
      "enrollment_count": 57,
      "start_date": "2020-06-24",
      "completion_date": "2024-10-01",
      "has_results": true,
      "last_update_posted_date": "2026-07-02",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 8,
      "location_summary": "Little Rock, Arkansas • Aurora, Colorado • Saint Paul, Minnesota + 5 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        },
        {
          "city": "Columbia",
          "state": "Missouri"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04085523"
    },
    {
      "nct_id": "NCT05171855",
      "title": "A Trial to Investigate Long Term Efficacy and Safety of Lonapegsomatropin in Adults With Growth Hormone Deficiency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Adult Growth Hormone Deficiency",
        "Endocrine System Diseases",
        "Hormone Deficiency"
      ],
      "interventions": [
        {
          "name": "Lonapegsomatropin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma Endocrinology Division A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "23 Years",
        "maximum_age": "81 Years",
        "sex": "ALL",
        "summary": "23 Years to 81 Years"
      },
      "enrollment_count": 220,
      "start_date": "2021-12-16",
      "completion_date": "2024-12-23",
      "has_results": true,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 15,
      "location_summary": "Phoenix, Arizona • Torrance, California • Chicago, Illinois + 12 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05171855"
    },
    {
      "nct_id": "NCT03305016",
      "title": "A Safety, Tolerability and Efficacy Study of TransCon hGH in Children With Growth Hormone Deficiency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Growth Hormone Deficiency, Pediatric",
        "Endocrine System Diseases",
        "Hormone Deficiency",
        "Pituitary Diseases"
      ],
      "interventions": [
        {
          "name": "TransCon hGH",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma Endocrinology Division A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Months to 17 Years"
      },
      "enrollment_count": 146,
      "start_date": "2017-11-13",
      "completion_date": "2019-03-19",
      "has_results": true,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 21,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Sacramento, California + 17 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Centennial",
          "state": "Colorado"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03305016"
    },
    {
      "nct_id": "NCT05980598",
      "title": "TransCon (TC) TLR7/8 Agonist, TC IL-2 β/γ, Pembrolizumab Prior to Surgery for Advanced Head and Neck Squamous Cell Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Neoplasms"
      ],
      "interventions": [
        {
          "name": "TransCon TLR7/8 Agonist",
          "type": "DRUG"
        },
        {
          "name": "Pembrolizumab",
          "type": "DRUG"
        },
        {
          "name": "TransCon IL-2 β/γ",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2023-09-29",
      "completion_date": "2025-03-28",
      "has_results": false,
      "last_update_posted_date": "2025-08-01",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 16,
      "location_summary": "Los Angeles, California • San Francisco, California • Chicago, Illinois + 13 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Springfield",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05980598"
    },
    {
      "nct_id": "NCT05690386",
      "title": "A Trial to Investigate Different Doses of Lonapegsomatropin Compared to Somatropin in Individuals With Turner Syndrome",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Turner Syndrome"
      ],
      "interventions": [
        {
          "name": "Lonapegsomatropin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Somatropin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma Endocrinology Division A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "10 Years",
        "sex": "FEMALE",
        "summary": "1 Year to 10 Years · Female only"
      },
      "enrollment_count": 48,
      "start_date": "2023-02-15",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-05-13",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 19,
      "location_summary": "Palo Alto, California • San Diego, California • Aurora, Colorado + 16 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "St. Petersburg",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05690386"
    },
    {
      "nct_id": "NCT03344458",
      "title": "A Long-Term Trial Investigating Safety and Efficacy of TransCon hGH in Children With Growth Hormone Deficiency Who Have Completed a Prior TransCon hGH Clinical Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Growth Hormone Deficiency, Pediatric",
        "Endocrine System Diseases",
        "Hormone Deficiency",
        "Pituitary Diseases"
      ],
      "interventions": [
        {
          "name": "TransCon hGH",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "1 Year to 18 Years"
      },
      "enrollment_count": 298,
      "start_date": "2017-12-19",
      "completion_date": "2023-02-21",
      "has_results": true,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 22,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Orange, California + 18 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Centennial",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03344458"
    },
    {
      "nct_id": "NCT02781727",
      "title": "A Phase 3 Trial of the Safety, Tolerability and Efficacy of TransCon hGH Weekly Versus Daily hGH in Children With Growth Hormone Deficiency (GHD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Growth Hormone Deficiency, Pediatric",
        "hGH (Human Growth Hormone)",
        "Endocrine System Diseases",
        "Hormones",
        "Pituitary Diseases"
      ],
      "interventions": [
        {
          "name": "Once weekly subcutaneous injection of TransCon hGH",
          "type": "DRUG"
        },
        {
          "name": "Once daily subcutaneous injection of Genotropin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ascendis Pharma Endocrinology Division A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "3 Years to 12 Years"
      },
      "enrollment_count": 162,
      "start_date": "2016-12-13",
      "completion_date": "2019-01-17",
      "has_results": true,
      "last_update_posted_date": "2026-07-07",
      "last_synced_at": "2026-10-06T07:46:37.815Z",
      "location_count": 16,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 13 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Centennial",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02781727"
    }
  ]
}