{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Mass+Balance+Study&page=2",
    "query": {
      "condition": "Mass Balance Study",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Mass+Balance+Study&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-07-22T18:14:48.513Z",
  "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": "NCT03804515",
      "title": "A Mass Balance and Pharmacokinetics Study of 14C-Labeled Poziotinib in Cancer Patients Suitable for Treatment With Poziotinib",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Solid Tumor"
      ],
      "interventions": [
        {
          "name": "14C-labeled poziotinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Spectrum Pharmaceuticals, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 2,
      "start_date": "2019-06-25",
      "completion_date": "2020-06-17",
      "has_results": false,
      "last_update_posted_date": "2021-06-15",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03804515"
    },
    {
      "nct_id": "NCT02205905",
      "title": "An Open-label, Single-dose, Non-randomized Study of IV 14C-labeled PER977 in Healthy Male Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "14C PER977",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Perosphere Pharmaceuticals Inc, a wholly owned subsidiary of AMAG Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "15 Years to 55 Years · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2014-07",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2020-05-20",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02205905"
    },
    {
      "nct_id": "NCT01273103",
      "title": "A Study to Investigate the Recovery, Excretion, and Pharmacokinetics of 14C-GSK2248761 Administered as an Oral Suspension to Healthy Adult Subjects",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Infection, Human Immunodeficiency Virus"
      ],
      "interventions": [
        {
          "name": "200mg [14C]- GSK2248761",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ViiV Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "30 Years to 55 Years · Male only"
      },
      "enrollment_count": 0,
      "start_date": "2011-01",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2014-05-19",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01273103"
    },
    {
      "nct_id": "NCT02564562",
      "title": "A Study To Investigate The Absorption, Distribution, Metabolism, And Excretion Of [14c]PF-06463922 In Healthy Male Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "[14C] PF-06463922",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2015-10",
      "completion_date": "2015-11",
      "has_results": false,
      "last_update_posted_date": "2015-12-04",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02564562"
    },
    {
      "nct_id": "NCT03220165",
      "title": "Radiolabeled Study to Determine the Mass Balance of [14C] MGL-3196",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "MGL-3196",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Madrigal Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 8,
      "start_date": "2017-08-06",
      "completion_date": "2017-09-03",
      "has_results": false,
      "last_update_posted_date": "2017-12-19",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03220165"
    },
    {
      "nct_id": "NCT05286281",
      "title": "A Study To Evaluate The Pharmacokinetics, Excretion, Mass Balance and Metabolism of PF-07265803",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "PF-07265803",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2022-03-31",
      "completion_date": "2022-05-26",
      "has_results": true,
      "last_update_posted_date": "2024-03-29",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05286281"
    },
    {
      "nct_id": "NCT01367483",
      "title": "Study of the Pharmacokinetics of Intravenous Administered 14C-MNTX",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Male Volunteers"
      ],
      "interventions": [
        {
          "name": "IV methylnaltrexone (MNTX)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bausch Health Americas, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "MALE",
        "summary": "18 Years to 45 Years · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2005-06",
      "completion_date": "2005-06",
      "has_results": false,
      "last_update_posted_date": "2019-11-27",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Tarrytown, New York",
      "locations": [
        {
          "city": "Tarrytown",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01367483"
    },
    {
      "nct_id": "NCT00868361",
      "title": "A Study to Investigate the Absorption, Metabolism and Excretion of Talampanel",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Talampanel (non-radiolabeled), [14C] Talampanel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 10,
      "start_date": "2009-05",
      "completion_date": "2009-09",
      "has_results": false,
      "last_update_posted_date": "2009-09-16",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00868361"
    },
    {
      "nct_id": "NCT01953783",
      "title": "Mass Balance, Pharmacokinetics and Metabolism Study of IXAZOMIB",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Advanced Solid Tumors",
        "Lymphoma"
      ],
      "interventions": [
        {
          "name": "IXAZOMIB",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Millennium Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2014-03-19",
      "completion_date": "2016-02-09",
      "has_results": true,
      "last_update_posted_date": "2020-08-26",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01953783"
    },
    {
      "nct_id": "NCT00715130",
      "title": "Move and Moderate in Balance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight",
        "Obesity",
        "Sedentary"
      ],
      "interventions": [
        {
          "name": "Energy Balance",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Fred Hutchinson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 31,
      "start_date": "2005-09",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2011-12-07",
      "last_synced_at": "2026-07-22T18:14:48.513Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00715130"
    }
  ]
}