{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=DNA+sample+collection&page=5",
    "query": {
      "intervention": "DNA sample collection",
      "page": 5
    },
    "page_size": 10
  },
  "pagination": {
    "page": 5,
    "page_size": 10,
    "total_count": 280,
    "total_pages": 28,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=DNA+sample+collection&page=6&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=DNA+sample+collection&page=4&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-22T10:02:40.931Z",
  "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": "NCT01940835",
      "title": "Role of Intestinal Inflammation in the Pathogenesis of Type 1 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Type 1 Diabetes"
      ],
      "interventions": [
        {
          "name": "Upper endoscopy with small bowel biopsies and brushings.",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood draw",
          "type": "OTHER"
        },
        {
          "name": "Stool sample",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 27,
      "start_date": "2013-09",
      "completion_date": "2019-06-19",
      "has_results": false,
      "last_update_posted_date": "2022-02-02",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01940835"
    },
    {
      "nct_id": "NCT03296371",
      "title": "Genetic Mutational Analysis of Saliva or Buccal Mucosa Samples From Patients With Embryonal or Alveolar Rhabdomyosarcoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Alveolar Rhabdomyosarcoma",
        "Embryonal Rhabdomyosarcoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "Up to 50 Years"
      },
      "enrollment_count": 900,
      "start_date": "2017-10-23",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-06",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03296371"
    },
    {
      "nct_id": "NCT04880044",
      "title": "Detection of Barrett s Esophagus in Patients Without GERD Symptoms",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Barrett's Esophagus"
      ],
      "interventions": [
        {
          "name": "EsoCheck/EsoGuard (EC/EG)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Esophago-gastro-duodenoscopy (EGD)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Case Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 132,
      "start_date": "2022-01-05",
      "completion_date": "2025-02-25",
      "has_results": true,
      "last_update_posted_date": "2026-03-10",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04880044"
    },
    {
      "nct_id": "NCT03534063",
      "title": "Implementing Genomics in Practice (IGNITE): CYP2D6 Genotype-Guided Pain Management in Patients Undergoing Arthroplasty Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain, Postoperative"
      ],
      "interventions": [
        {
          "name": "CYP2D6-guided opioid therapy",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 260,
      "start_date": "2018-06-07",
      "completion_date": "2020-04-29",
      "has_results": true,
      "last_update_posted_date": "2023-07-17",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 3,
      "location_summary": "Gainesville, Florida • Summerfield, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Summerfield",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03534063"
    },
    {
      "nct_id": "NCT03555721",
      "title": "CytID Analysis of Oral Lesions",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Oral Cavity Cancer",
        "Oropharyngeal Cancer"
      ],
      "interventions": [
        {
          "name": "Oral examination with incandescent light",
          "type": "OTHER"
        },
        {
          "name": "Oral examination with OralID",
          "type": "OTHER"
        },
        {
          "name": "Biopsy",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "CytID",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "hpvID",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 18,
      "start_date": "2018-05-30",
      "completion_date": "2022-11-01",
      "has_results": false,
      "last_update_posted_date": "2023-05-10",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03555721"
    },
    {
      "nct_id": "NCT04794322",
      "title": "Developing a Test of Uterine Lavage for the Detection of Ovarian Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Ovarian Neoplasms",
        "Ovarian Epithelial Carcinoma",
        "Fallopian Tube Neoplasms",
        "High Grade Ovarian Serous Adenocarcinoma",
        "Stage I Ovarian Cancer",
        "Stage II Ovarian Cancer",
        "Stage III Ovarian Cancer AJCC v8",
        "Stage IIIA Ovarian Cancer AJCC v8",
        "Stage IIIA1 Ovarian Cancer AJCC v8",
        "Stage IIIA2 Ovarian Cancer AJCC v8",
        "Stage IIIB Ovarian Cancer AJCC v8",
        "Stage IIIC Ovarian Cancer AJCC v8",
        "Stage IV Ovarian Cancer AJCC v8",
        "Stage IVA Ovarian Cancer AJCC v8",
        "Stage IVB Ovarian Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Uterine lavage, or a wash of the womb",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Blood sample",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Pap smear",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "30 Years and older · Female only"
      },
      "enrollment_count": 250,
      "start_date": "2020-04-13",
      "completion_date": "2028-08-31",
      "has_results": false,
      "last_update_posted_date": "2025-09-16",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 6,
      "location_summary": "Little Rock, Arkansas • San Francisco, California • Annapolis, Maryland + 3 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Annapolis",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04794322"
    },
    {
      "nct_id": "NCT00745160",
      "title": "Survey and Blood Sample Collection for Patients With Lung Cancer Who Never Smoked Cigarettes",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Cancer"
      ],
      "interventions": [
        {
          "name": "blood sample and questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 115,
      "start_date": "2008-08",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2011-03-30",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 5,
      "location_summary": "Basking Ridge, New Jersey • Commack, New York • New York, New York + 2 more",
      "locations": [
        {
          "city": "Basking Ridge",
          "state": "New Jersey"
        },
        {
          "city": "Commack",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rockville Centre",
          "state": "New York"
        },
        {
          "city": "Sleepy Hollow",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00745160"
    },
    {
      "nct_id": "NCT00496613",
      "title": "Chemotherapy-Induced Changes to Cognition and DNA in Breast Cancer Survivors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer",
        "Long-Term Survivors"
      ],
      "interventions": [
        {
          "name": "Mini-Mental State Exam and Blood Draw",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 70 Years · Female only"
      },
      "enrollment_count": 200,
      "start_date": "2007-06",
      "completion_date": "2022-04-18",
      "has_results": false,
      "last_update_posted_date": "2022-04-21",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 3,
      "location_summary": "Commack, New York • New York, New York • Rockville Centre, New York",
      "locations": [
        {
          "city": "Commack",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rockville Centre",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00496613"
    },
    {
      "nct_id": "NCT02604563",
      "title": "Aging, Geriatric Syndromes and Clonal Hematopoiesis",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Geriatrics",
        "Aged",
        "Geriatric Syndromes",
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "Cognitive Assessment",
          "type": "OTHER"
        },
        {
          "name": "Activities of Daily Living Questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Instrumental Activities of Daily Living, subscale of the OARS",
          "type": "OTHER"
        },
        {
          "name": "Karnofsky Self-reported Performance Rating Scale",
          "type": "OTHER"
        },
        {
          "name": "Number of Falls",
          "type": "OTHER"
        },
        {
          "name": "Physical Health Section, subscale of the OARS",
          "type": "OTHER"
        },
        {
          "name": "MOS Social Activity Survey",
          "type": "OTHER"
        },
        {
          "name": "Unintentional Weight Loss",
          "type": "OTHER"
        },
        {
          "name": "Peripheral Blood Draw",
          "type": "GENETIC"
        },
        {
          "name": "Buccal Swab",
          "type": "GENETIC"
        },
        {
          "name": "Heart Health and Smoking History from BRFSS questionnaire",
          "type": "OTHER"
        },
        {
          "name": "Gait Speed",
          "type": "OTHER"
        },
        {
          "name": "Grip Strength",
          "type": "OTHER"
        },
        {
          "name": "Height and Weight measurements",
          "type": "OTHER"
        },
        {
          "name": "Blood pressure measurement",
          "type": "OTHER"
        },
        {
          "name": "Optional bone marrow biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood draw for trauma measurements",
          "type": "PROCEDURE"
        },
        {
          "name": "Femur head donation",
          "type": "OTHER"
        },
        {
          "name": "Knee bone fragments",
          "type": "OTHER"
        },
        {
          "name": "Bone marrow aspirate",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "GENETIC",
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 2000,
      "start_date": "2016-03-10",
      "completion_date": "2030-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02604563"
    },
    {
      "nct_id": "NCT02250404",
      "title": "Molecular Signatures of Relapse in Tissue Samples From Patients With Small Cell Lung Cancer Who Are Receiving Cisplatin and Etoposide",
      "overall_status": "WITHDRAWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Small Cell Lung Cancer"
      ],
      "interventions": [
        {
          "name": "cytology specimen collection procedure",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2014-08-22",
      "completion_date": "2019-08-22",
      "has_results": false,
      "last_update_posted_date": "2018-05-25",
      "last_synced_at": "2026-10-22T10:02:40.931Z",
      "location_count": 2,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02250404"
    }
  ]
}