{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Mass+Spectrometry&page=2",
    "query": {
      "intervention": "Mass Spectrometry",
      "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?intervention=Mass+Spectrometry&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-27T06:13:48.523Z",
  "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": "NCT00574678",
      "title": "Analyzing the Composition of Tears to Identify Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Ovarian Cancer",
        "Colon Cancer",
        "Benign Disease"
      ],
      "interventions": [
        {
          "name": "Tear collection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Arkansas",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2006-12",
      "completion_date": "2016-02",
      "has_results": false,
      "last_update_posted_date": "2021-08-05",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00574678"
    },
    {
      "nct_id": "NCT00436566",
      "title": "Doxorubicin and Cyclophosphamide Followed By Trastuzumab, Paclitaxel, and Lapatinib in Treating Patients With Early-Stage HER2-Positive Breast Cancer That Has Been Removed By Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Cardiac Toxicity"
      ],
      "interventions": [
        {
          "name": "trastuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "doxorubicin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "lapatinib ditosylate",
          "type": "DRUG"
        },
        {
          "name": "paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "gene expression analysis",
          "type": "GENETIC"
        },
        {
          "name": "reverse transcriptase-polymerase chain reaction",
          "type": "GENETIC"
        },
        {
          "name": "fluorophotometry",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "mass spectrometry",
          "type": "OTHER"
        },
        {
          "name": "adjuvant therapy",
          "type": "PROCEDURE"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "GENETIC",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 122,
      "start_date": "2007-03-16",
      "completion_date": "2019-07-22",
      "has_results": true,
      "last_update_posted_date": "2022-08-05",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00436566"
    },
    {
      "nct_id": "NCT03837327",
      "title": "Clinical Validation of the InterVenn Ovarian CAncer Liquid Biopsy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adnexal Mass",
        "Ovarian Cancer",
        "Pelvic Mass"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Venn Biosciences Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 1025,
      "start_date": "2019-04-16",
      "completion_date": "2024-01-22",
      "has_results": false,
      "last_update_posted_date": "2024-04-23",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 10,
      "location_summary": "Los Angeles, California • San Jose, California • Sunnyvale, California + 7 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Jose",
          "state": "California"
        },
        {
          "city": "Sunnyvale",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03837327"
    },
    {
      "nct_id": "NCT00898742",
      "title": "Gene and Protein Expression Patterns in Predicting Response to Cetuximab in Patients With Recurrent and/or Metastatic Head and Neck Cancer",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Head and Neck Cancer"
      ],
      "interventions": [
        {
          "name": "DNA and tissue microarray analysis",
          "type": "GENETIC"
        },
        {
          "name": "reverse transcriptase-polymerase chain reaction",
          "type": "GENETIC"
        },
        {
          "name": "mass spectrometry",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER"
      ],
      "sponsor": "Vanderbilt-Ingram Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 58,
      "start_date": "2007-04",
      "completion_date": "2010-06",
      "has_results": false,
      "last_update_posted_date": "2013-04-02",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 3,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00898742"
    },
    {
      "nct_id": "NCT00898430",
      "title": "Biomarkers in Predicting Response to Treatment in Patients With Newly Diagnosed Stage III or Stage IV Head and Neck Cancer Treated With Carboplatin, Paclitaxel, and Radiation Therapy",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Head and Neck Cancer"
      ],
      "interventions": [
        {
          "name": "DNA Microarray analysis",
          "type": "GENETIC"
        },
        {
          "name": "MALDI-TOF mass spectrometry",
          "type": "GENETIC"
        },
        {
          "name": "DNA microarray and MALDI-TOF mass spectrometry",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC"
      ],
      "sponsor": "Vanderbilt-Ingram Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 49,
      "start_date": "2003-11",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2013-04-02",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 3,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00898430"
    },
    {
      "nct_id": "NCT00959244",
      "title": "Study of Urine Samples From Women With Newly Diagnosed Breast Cancer Enrolled on Clinical Trial UNMC-08105",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "high performance liquid chromatography",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "mass spectrometry",
          "type": "OTHER"
        },
        {
          "name": "medical chart review",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "19 Years and older · Female only"
      },
      "enrollment_count": 100,
      "start_date": "2009-02-02",
      "completion_date": "2009-09-25",
      "has_results": false,
      "last_update_posted_date": "2023-09-01",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00959244"
    },
    {
      "nct_id": "NCT00255398",
      "title": "Kidney Disease Biomarkers",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Kidney Disease",
        "Glomerular Disease",
        "Idiopathic Nephrotic Syndrome",
        "Focal Segmental Glomerulosclerosis",
        "Collapsing Glomerulopathy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2005-11-10",
      "completion_date": "2014-12-03",
      "has_results": false,
      "last_update_posted_date": "2019-12-17",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00255398"
    },
    {
      "nct_id": "NCT01603758",
      "title": "Physiological Study of Human Cholesterol Metabolism and Excretion",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Coronary Heart Disease",
        "Cardiovascular Disease",
        "Dyslipidemia",
        "Disorder of Cholesterol Metabolism"
      ],
      "interventions": [
        {
          "name": "Ezetimibe",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Richard E. Ostlund Jr., MD",
      "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": 132,
      "start_date": "2014-01",
      "completion_date": "2015-06",
      "has_results": false,
      "last_update_posted_date": "2016-05-06",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01603758"
    },
    {
      "nct_id": "NCT00572884",
      "title": "Metabolism of the Insecticide Permethrin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pharmacokinetics",
        "Metabolism"
      ],
      "interventions": [
        {
          "name": "permethrin insecticide",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 6,
      "start_date": "2006-02",
      "completion_date": "2007-11",
      "has_results": false,
      "last_update_posted_date": "2007-12-13",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 1,
      "location_summary": "Mather, California",
      "locations": [
        {
          "city": "Mather",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00572884"
    },
    {
      "nct_id": "NCT00931255",
      "title": "Tacrolimus to Sirolimus Conversion for Delayed Graft Function",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Kidney Transplant",
        "Delayed Graft Function"
      ],
      "interventions": [
        {
          "name": "Tacrolimus",
          "type": "DRUG"
        },
        {
          "name": "Sirolimus",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 32,
      "start_date": "2009-04",
      "completion_date": "2014-07",
      "has_results": true,
      "last_update_posted_date": "2022-03-31",
      "last_synced_at": "2026-09-27T06:13:48.523Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00931255"
    }
  ]
}