{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Blood+for+ctDNA+%28optional%29",
    "query": {
      "intervention": "Blood for ctDNA (optional)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T02:21:00.857Z",
  "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": "NCT05212779",
      "title": "Predicting the Risk of Ovarian Cancer Recurrence Using Circulating Tumor DNA to Assess Residual Disease",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Epithelial Ovarian Cancer"
      ],
      "interventions": [
        {
          "name": "Signatera testing",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Altera Testing",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "95 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 95 Years · Female only"
      },
      "enrollment_count": 45,
      "start_date": "2022-10-07",
      "completion_date": "2024-12-30",
      "has_results": false,
      "last_update_posted_date": "2024-02-01",
      "last_synced_at": "2026-09-22T02:21:00.857Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05212779"
    },
    {
      "nct_id": "NCT06716580",
      "title": "EQUAL: EGFR ctDNA QUantative Assessment for Lung Cancer Screening in Asian and Latinx Populations",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lung Cancer",
        "EGFR Gene Mutation"
      ],
      "interventions": [
        {
          "name": "Circulating Tumor DNA (ctDNA) Assay",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Dana-Farber Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 1000,
      "start_date": "2025-04-01",
      "completion_date": "2030-09-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-15",
      "last_synced_at": "2026-09-22T02:21:00.857Z",
      "location_count": 6,
      "location_summary": "Boston, Massachusetts • Brighton, Massachusetts • Methuen, Massachusetts + 1 more",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Brighton",
          "state": "Massachusetts"
        },
        {
          "city": "Methuen",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06716580"
    },
    {
      "nct_id": "NCT05587439",
      "title": "Investigating Hereditary Risk In Thoracic Cancers (INHERIT)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Cancer",
        "Genetic Disease",
        "Genetic Predisposition",
        "Hereditary Diseases"
      ],
      "interventions": [
        {
          "name": "Data and Specimen Collection",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "Dana-Farber Cancer Institute",
      "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": "2023-01-01",
      "completion_date": "2027-11-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-26",
      "last_synced_at": "2026-09-22T02:21:00.857Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05587439"
    },
    {
      "nct_id": "NCT05653388",
      "title": "Metastatic Leiomyosarcoma Biomarker Protocol",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Leiomyosarcoma"
      ],
      "interventions": [
        {
          "name": "Plasma Collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan Rogel Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 200,
      "start_date": "2022-12-22",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-06-24",
      "last_synced_at": "2026-09-22T02:21:00.857Z",
      "location_count": 9,
      "location_summary": "Santa Monica, California • Miami, Florida • Boston, Massachusetts + 6 more",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05653388"
    },
    {
      "nct_id": "NCT05272423",
      "title": "Studying Pathways of Resistance in KRAS-driven Cancers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "KRAS P.G12C"
      ],
      "interventions": [
        {
          "name": "FoundationOne® Liquid CDx",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Addario Lung Cancer Medical Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 58,
      "start_date": "2022-09-08",
      "completion_date": "2026-04-06",
      "has_results": false,
      "last_update_posted_date": "2026-08-04",
      "last_synced_at": "2026-09-22T02:21:00.857Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05272423"
    },
    {
      "nct_id": "NCT04046575",
      "title": "Radiation Dose Intensification With Accelerated Hypofractionated Intensity Modulated Radiation Therapy and Concurrent Carboplatin and Paclitaxel for Inoperable Esophageal Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Esophagus Cancer",
        "Esophageal Cancer",
        "Cancer of the Esophagus"
      ],
      "interventions": [
        {
          "name": "Intensity Modulated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "MD Anderson Symptom Inventory (MDASI)-Plus module",
          "type": "OTHER"
        },
        {
          "name": "EuroQol (EQ-5D)",
          "type": "OTHER"
        },
        {
          "name": "SF-12",
          "type": "OTHER"
        },
        {
          "name": "MOS Social Support Measure",
          "type": "OTHER"
        },
        {
          "name": "CES-D",
          "type": "OTHER"
        },
        {
          "name": "Blood for ctDNA (optional)",
          "type": "PROCEDURE"
        },
        {
          "name": "Blood for SCCA",
          "type": "PROCEDURE"
        },
        {
          "name": "Paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "DRUG",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2019-11-07",
      "completion_date": "2029-11-20",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-09-22T02:21:00.857Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04046575"
    }
  ]
}