{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?nctId=NCT04221893",
    "query": {
      "nctId": "NCT04221893"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 1,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-18T15:36:13.413Z",
  "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": "NCT04221893",
      "title": "Radiation Therapy for the Treatment of Metastatic Gastrointestinal Cancers",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Stage IV Esophageal Adenocarcinoma",
        "Stage IV Esophageal Squamous Cell Carcinoma",
        "Stage IV Gastric Cancer",
        "Stage IV Adenocarcinoma of the Gastroesophageal Junction",
        "Stage IVA Esophageal Adenocarcinoma",
        "Stage IVA Esophageal Squamous Cell Carcinoma",
        "Stage IVA Gastric Cancer",
        "Stage IVA Adenocarcinoma of the Gastroesophageal Junction",
        "Stage IVB Esophageal Adenocarcinoma",
        "Stage IVB Esophageal Squamous Cell Carcinoma",
        "Stage IVB Gastric Cancer",
        "Stage IVB Gastroesophageal Junction Adenocarcinoma",
        "Metastatic Anal Canal Carcinoma",
        "Metastatic Colorectal Carcinoma",
        "Metastatic Esophageal Carcinoma",
        "Metastatic Gastric Carcinoma",
        "Metastatic Gastroesophageal Junction Adenocarcinoma",
        "Metastatic Hepatocellular Carcinoma",
        "Metastatic Malignant Digestive System Neoplasm",
        "Metastatic Small Intestinal Carcinoma",
        "Pancreatobiliary Carcinoma",
        "Pathologic Stage IV Gastric Cancer AJCC v8",
        "Pathologic Stage IVA Esophageal Adenocarcinoma AJCC v8",
        "Pathologic Stage IVA Esophageal Squamous Cell Carcinoma AJCC v8",
        "Pathologic Stage IVB Esophageal Adenocarcinoma AJCC v8",
        "Pathologic Stage IVB Esophageal Squamous Cell Carcinoma AJCC v8",
        "Pathologic Stage IVB Gastroesophageal Junction Adenocarcinoma AJCC v8",
        "Postneoadjuvant Therapy Stage IV Esophageal Squamous Cell Carcinoma AJCC v8",
        "Postneoadjuvant Therapy Stage IV Gastric Cancer AJCC v8",
        "Postneoadjuvant Therapy Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8",
        "Postneoadjuvant Therapy Stage IVA Esophageal Adenocarcinoma AJCC v8",
        "Postneoadjuvant Therapy Stage IVA Esophageal Squamous Cell Carcinoma AJCC v8",
        "Postneoadjuvant Therapy Stage IVA Gastroesophageal Junction Adenocarcinoma AJCC v8",
        "Postneoadjuvant Therapy Stage IVB Esophageal Adenocarcinoma AJCC v8",
        "Postneoadjuvant Therapy Stage IVB Esophageal Squamous Cell Carcinoma AJCC V8",
        "Postneoadjuvant Therapy Stage IVB Gastroesophageal Junction Adenocarcinoma AJCC v8",
        "Stage IV Anal Cancer AJCC v8",
        "Stage IV Colorectal Cancer AJCC v8",
        "Stage IV Hepatocellular Carcinoma AJCC v8",
        "Stage IVA Colorectal Cancer AJCC v8",
        "Stage IVA Hepatocellular Carcinoma AJCC v8",
        "Stage IVB Colorectal Cancer AJCC v8",
        "Stage IVB Hepatocellular Carcinoma AJCC v8",
        "Stage IVC Colorectal Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Radiation Therapy (RT)",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 28,
      "start_date": "2020-08-07",
      "completion_date": "2028-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-14",
      "last_synced_at": "2026-09-18T15:36:13.413Z",
      "location_count": 2,
      "location_summary": "San Francisco, California • Walnut Creek, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04221893"
    }
  ]
}