{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Congenital+Anemias&page=4",
    "query": {
      "condition": "Congenital Anemias",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 1044,
    "total_pages": 105,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Congenital+Anemias&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Congenital+Anemias&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T21:57:45.314Z",
  "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": "NCT01033227",
      "title": "Safety and Efficacy of Sodium Nitrite in Sickle Cell Disease",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "sodium nitrite injection, usp",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "23 Years",
        "sex": "ALL",
        "summary": "8 Years to 23 Years"
      },
      "enrollment_count": 5,
      "start_date": "2009-12",
      "completion_date": "2012-06",
      "has_results": true,
      "last_update_posted_date": "2017-10-17",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01033227"
    },
    {
      "nct_id": "NCT00804362",
      "title": "Validation of the Sickle Cell Disease Pain Burden Interview",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease",
        "Pain"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Connecticut Children's Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "7 Years to 21 Years"
      },
      "enrollment_count": 131,
      "start_date": "2008-12",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2013-07-30",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 1,
      "location_summary": "Hartford, Connecticut",
      "locations": [
        {
          "city": "Hartford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00804362"
    },
    {
      "nct_id": "NCT07476183",
      "title": "Assessing the Safety, Tolerability, and Efficacy of APR-2020 in Pediatric and Adolescent Subjects With RPS19 Deficient Diamond-Blackfan Anemia",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "RPS19 Deficient Diamond-Blackfan Anemia"
      ],
      "interventions": [
        {
          "name": "APR-2020",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Apriligen, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "2 Years to 25 Years"
      },
      "enrollment_count": 4,
      "start_date": "2026-04-16",
      "completion_date": "2028-09",
      "has_results": false,
      "last_update_posted_date": "2026-07-21",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 2,
      "location_summary": "Stanford, California • Boston, Massachusetts",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07476183"
    },
    {
      "nct_id": "NCT02090296",
      "title": "Risk-based Therapy for Sickle Cell Anemia: A Feasibility Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sickle Cell Anemia"
      ],
      "interventions": [
        {
          "name": "Hydroxyurea",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Children's National Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "12 Months",
        "sex": "ALL",
        "summary": "6 Months to 12 Months"
      },
      "enrollment_count": 0,
      "start_date": "2014-02",
      "completion_date": "2015-06",
      "has_results": false,
      "last_update_posted_date": "2017-10-18",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02090296"
    },
    {
      "nct_id": "NCT00451919",
      "title": "The Link Between Anemia and Deficits in Memory and Attention in Individuals With Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 120,
      "start_date": "2006-07",
      "completion_date": "2009-02",
      "has_results": false,
      "last_update_posted_date": "2016-08-19",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00451919"
    },
    {
      "nct_id": "NCT02105766",
      "title": "Nonmyeloablative Peripheral Blood Mobilized Hematopoietic Precursor Cell Transplantation for Sickle Cell Disease and Beta-thalassemia in People With Higher Risk of Transplant Failure",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sickle Cell Disease",
        "Thalassemia",
        "Stem Cell Transplantation",
        "Graft vs Host Disease"
      ],
      "interventions": [
        {
          "name": "Alemtuzumab",
          "type": "DRUG"
        },
        {
          "name": "Sirolimus",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Pentostatin",
          "type": "DRUG"
        },
        {
          "name": "Radiotherapy",
          "type": "PROCEDURE"
        },
        {
          "name": "Filgrastim",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "4 Years to 80 Years"
      },
      "enrollment_count": 56,
      "start_date": "2014-04-21",
      "completion_date": "2027-12-31",
      "has_results": true,
      "last_update_posted_date": "2026-08-18",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02105766"
    },
    {
      "nct_id": "NCT03474965",
      "title": "Study of Dose Confirmation and Safety of Crizanlizumab in Pediatric Sickle Cell Disease Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sickle Cell Disease (SCD)"
      ],
      "interventions": [
        {
          "name": "Crizanlizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "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": 117,
      "start_date": "2018-10-01",
      "completion_date": "2024-11-06",
      "has_results": true,
      "last_update_posted_date": "2025-10-16",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 12,
      "location_summary": "Birmingham, Alabama • Washington D.C., District of Columbia • Gainesville, Florida + 9 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03474965"
    },
    {
      "nct_id": "NCT06385886",
      "title": "Recruitment and Engagement in Care to Impact Practice Enhancement (RECIPE) for Sickle Cell Disease",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Linkage Coordinator",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "RTI International",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 500,
      "start_date": "2023-06-08",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2025-06-22",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 9,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Oakland, California + 6 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06385886"
    },
    {
      "nct_id": "NCT00343954",
      "title": "PK and PD Responses to Oral L-Citrulline in Patients With Sickle Cell Disease",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "L-citrulline tablets, 1000 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Angiogenix",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "10 Years and older"
      },
      "enrollment_count": 12,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2006-06-23",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00343954"
    },
    {
      "nct_id": "NCT06442761",
      "title": "SCD Stem Cell Mobilization and Apheresis Using Motixafortide",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Motixafortide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2024-11-14",
      "completion_date": "2028-07",
      "has_results": false,
      "last_update_posted_date": "2026-09-08",
      "last_synced_at": "2026-10-09T21:57:45.314Z",
      "location_count": 3,
      "location_summary": "Birmingham, Alabama • Bethesda, Maryland • Memphis, Tennessee",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06442761"
    }
  ]
}