{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=PBT-A",
    "query": {
      "intervention": "PBT-A"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 21,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=PBT-A&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T01:09:33.248Z",
  "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": "NCT04520139",
      "title": "Effect of NAC on Preventing Chemo-Related Cognitive Impairments in Ovarian Ca Pts Treated W/ PBT",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Ovarian Cancer",
        "Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "N-Acetyl-Cysteine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 102,
      "start_date": "2026-05-21",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04520139"
    },
    {
      "nct_id": "NCT02736786",
      "title": "A Study of Mucosal Sparing Proton Beam Therapy (PBT) in Resected Oropharyngeal Tumors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Oropharyngeal Tumor"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 64,
      "start_date": "2016-03",
      "completion_date": "2021-08-23",
      "has_results": false,
      "last_update_posted_date": "2021-08-24",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 2,
      "location_summary": "Phoenix, Arizona • Rochester, Minnesota",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02736786"
    },
    {
      "nct_id": "NCT02444741",
      "title": "Pembrolizumab and Stereotactic Body Radiation Therapy or Non-Stereotactic Wide-Field Radiation Therapy in Treating Patients With Non-small Cell Lung Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Malignant Solid Neoplasm",
        "Metastatic Lung Non-Small Cell Carcinoma",
        "Stage IV Lung Non-Small Cell Cancer AJCC v7"
      ],
      "interventions": [
        {
          "name": "3-Dimensional Conformal Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Intensity-Modulated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Proton Beam Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Stereotactic Body Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "OTHER",
        "BIOLOGICAL"
      ],
      "sponsor": "M.D. Anderson 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": 124,
      "start_date": "2015-09-17",
      "completion_date": "2026-02-17",
      "has_results": true,
      "last_update_posted_date": "2026-05-15",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02444741"
    },
    {
      "nct_id": "NCT00573170",
      "title": "TREXIMET® Versus Butalbital-containing Combination Medications for the Acute Treatment of Migraine in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Migraine Disorders",
        "Migraine, Acute"
      ],
      "interventions": [
        {
          "name": "TREXIMET®",
          "type": "DRUG"
        },
        {
          "name": "Butalbital-containing Combination Medications (BCM)",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 375,
      "start_date": "2008-02",
      "completion_date": "2009-08",
      "has_results": true,
      "last_update_posted_date": "2010-12-29",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 107,
      "location_summary": "Chandler, Arizona • Gilbert, Arizona • Litchfield Park, Arizona + 94 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Litchfield Park",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00573170"
    },
    {
      "nct_id": "NCT03482791",
      "title": "Proton Beam Therapy in the Treatment of Esophageal Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Esophagus Cancer",
        "Esophageal Cancer",
        "Cancer of the Esophagus"
      ],
      "interventions": [
        {
          "name": "Proton beam therapy",
          "type": "RADIATION"
        },
        {
          "name": "Patient-Reported Outcome Measures",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "OTHER"
      ],
      "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": 22,
      "start_date": "2018-04-19",
      "completion_date": "2026-08-09",
      "has_results": true,
      "last_update_posted_date": "2026-04-02",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03482791"
    },
    {
      "nct_id": "NCT01617161",
      "title": "Proton Therapy vs. IMRT for Low or Intermediate Risk Prostate Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Proton Beam Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Intensity Modulated Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 454,
      "start_date": "2012-07-25",
      "completion_date": "2030-12",
      "has_results": false,
      "last_update_posted_date": "2026-04-24",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 13,
      "location_summary": "Jacksonville, Florida • Chicago, Illinois • College Park, Maryland + 10 more",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "College Park",
          "state": "Maryland"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Danvers",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01617161"
    },
    {
      "nct_id": "NCT01512589",
      "title": "Proton Beam Therapy (PBT) Versus Intensity-Modulated Radiation Therapy (IMRT) Trial",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Esophageal Cancer"
      ],
      "interventions": [
        {
          "name": "Proton Beam Therapy (PBT)",
          "type": "RADIATION"
        },
        {
          "name": "Intensity Modulated Radiation Therapy (IMRT)",
          "type": "RADIATION"
        },
        {
          "name": "Questionnaires",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson 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": 147,
      "start_date": "2012-04-30",
      "completion_date": "2027-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-15",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01512589"
    },
    {
      "nct_id": "NCT05302570",
      "title": "Neoadjuvant Short-course Hypofractionated PBT for Non-metastatic RPS",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Retroperitoneal Sarcoma"
      ],
      "interventions": [
        {
          "name": "Hypofractionated Proton Beam Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "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": "2022-12",
      "completion_date": "2027-12",
      "has_results": false,
      "last_update_posted_date": "2022-12-15",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 2,
      "location_summary": "Washington D.C., District of Columbia • Baltimore, Maryland",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05302570"
    },
    {
      "nct_id": "NCT00237185",
      "title": "A Study of the Efficacy and Safety of Imatinib Mesylate in Patients With Unresectable or Metastatic Gastrointestinal Stromal Tumors Expressing C-kit Gene",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Unresectable or Metastatic Malignant Gastrointestinal Stromal Tumor (GIST)"
      ],
      "interventions": [
        {
          "name": "Imatinib mesylate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 148,
      "start_date": "2000-06",
      "completion_date": "2013-06",
      "has_results": true,
      "last_update_posted_date": "2014-08-19",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts • Portland, Oregon • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00237185"
    },
    {
      "nct_id": "NCT05799872",
      "title": "Neuroscience-informed Treatment to Remotely Target Reward Mechanisms in Post-acute Anorexia Nervosa",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anorexia Nervosa"
      ],
      "interventions": [
        {
          "name": "Positive Affect Treatment for Anorexia Nervosa (PAT-AN):",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Psychoeducational and Behavioral Therapy (PBT)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 90,
      "start_date": "2023-12-06",
      "completion_date": "2026-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-11",
      "last_synced_at": "2026-09-06T01:09:33.248Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05799872"
    }
  ]
}