{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Negative+control&page=19",
    "query": {
      "intervention": "Negative control",
      "page": 19
    },
    "page_size": 10
  },
  "pagination": {
    "page": 19,
    "page_size": 10,
    "total_count": 1039,
    "total_pages": 104,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Negative+control&page=20&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Negative+control&page=18&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-26T12:34:52.911Z",
  "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": "NCT05229016",
      "title": "Priming and Patient Reported Outcome Measures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Patient Participation",
        "PROM"
      ],
      "interventions": [
        {
          "name": "Reflection on health-related experiences",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 900,
      "start_date": "2021-11-09",
      "completion_date": "2022-02-28",
      "has_results": false,
      "last_update_posted_date": "2023-04-25",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05229016"
    },
    {
      "nct_id": "NCT00971347",
      "title": "Chewing Gum for Weight Loss",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Overweight",
        "Weight Loss"
      ],
      "interventions": [
        {
          "name": "Extra sugar-free chewing gum sticks",
          "type": "OTHER"
        },
        {
          "name": "nutrition brochure",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "19 Years to 50 Years"
      },
      "enrollment_count": 200,
      "start_date": "2009-08",
      "completion_date": "2010-06",
      "has_results": false,
      "last_update_posted_date": "2010-11-23",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00971347"
    },
    {
      "nct_id": "NCT04373031",
      "title": "Pembrolizumab, IRX-2, and Chemotherapy in Triple Negative Breast Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Pembrolizumab",
          "type": "DRUG"
        },
        {
          "name": "IRX 2",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Providence Health & Services",
      "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": "2020-12-30",
      "completion_date": "2026-12",
      "has_results": true,
      "last_update_posted_date": "2026-04-24",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04373031"
    },
    {
      "nct_id": "NCT04352530",
      "title": "Culturally Appropriate Nutrition Communication for Mexican American Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Lifestyle Risk Reduction",
        "Nutrition Poor",
        "Chronic Disease",
        "Obesity",
        "Cancer, Breast"
      ],
      "interventions": [
        {
          "name": "Health Communication",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, Merced",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "29 Years",
        "sex": "ALL",
        "summary": "18 Years to 29 Years"
      },
      "enrollment_count": 881,
      "start_date": "2019-03-25",
      "completion_date": "2022-12-25",
      "has_results": false,
      "last_update_posted_date": "2023-05-09",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "Merced, California",
      "locations": [
        {
          "city": "Merced",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04352530"
    },
    {
      "nct_id": "NCT04551807",
      "title": "Natural Versus Programmed Frozen Embryo Transfer (NatPro)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pregnancy Related",
        "Pre-Eclampsia"
      ],
      "interventions": [
        {
          "name": "Modified natural cycle",
          "type": "PROCEDURE"
        },
        {
          "name": "Programmed cycle",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "JHSPH Center for Clinical Trials",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "41 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 41 Years · Female only"
      },
      "enrollment_count": 788,
      "start_date": "2020-09-16",
      "completion_date": "2026-04-01",
      "has_results": false,
      "last_update_posted_date": "2025-05-16",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 15,
      "location_summary": "San Francisco, California • Sunnyvale, California • Orange, Connecticut + 12 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Sunnyvale",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "Connecticut"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04551807"
    },
    {
      "nct_id": "NCT02309944",
      "title": "Negative Pressure Wound Therapy in Obese Gynecologic Oncology Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Postoperative Complications",
        "Obesity",
        "Gynecologic Neoplasms"
      ],
      "interventions": [
        {
          "name": "Standard Wound Closure",
          "type": "PROCEDURE"
        },
        {
          "name": "Prevena™ Incision Management System",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE"
      ],
      "sponsor": "Masonic Cancer Center, University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 93,
      "start_date": "2015-05",
      "completion_date": "2020-06",
      "has_results": true,
      "last_update_posted_date": "2020-07-27",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02309944"
    },
    {
      "nct_id": "NCT07580495",
      "title": "Effect of Collagen Membrane on Ridge Preservation",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dehiscence",
        "Tooth Extraction",
        "Alveolar Bone Loss"
      ],
      "interventions": [
        {
          "name": "Minimally Invasive tooth extraction",
          "type": "PROCEDURE"
        },
        {
          "name": "Alveolar ridge preservation with ABCC",
          "type": "DEVICE"
        },
        {
          "name": "Resorbable collagen membrane (InterCollagen® Guide)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE"
      ],
      "sponsor": "Debora Dias",
      "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": 30,
      "start_date": "2026-05-26",
      "completion_date": "2027-10-31",
      "has_results": false,
      "last_update_posted_date": "2026-10-22",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07580495"
    },
    {
      "nct_id": "NCT05347602",
      "title": "Gold Factor on Knee Joint Health and Function",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Knee Arthritis",
        "Knee Osteoarthritis",
        "Knee Pain Chronic",
        "Knee Discomfort",
        "Rheumatoid Arthritis",
        "Knee Pain Swelling"
      ],
      "interventions": [
        {
          "name": "Gold Factor (Gold Nanoparticles, AuNPs)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "4Life Research, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "87 Years",
        "sex": "ALL",
        "summary": "18 Years to 87 Years"
      },
      "enrollment_count": 51,
      "start_date": "2020-08-03",
      "completion_date": "2020-12-30",
      "has_results": false,
      "last_update_posted_date": "2022-07-12",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05347602"
    },
    {
      "nct_id": "NCT00663663",
      "title": "Telephone Intervention for Pain Study (TIPS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Pain",
        "Multiple Sclerosis",
        "Amputation",
        "Spinal Cord Injury"
      ],
      "interventions": [
        {
          "name": "Telephone-Delivered Intervention 1",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Telephone-Delivered Intervention 2",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 207,
      "start_date": "2009-09",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2013-08-30",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00663663"
    },
    {
      "nct_id": "NCT06818032",
      "title": "Avocado and Postprandial Responses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy",
        "Healthy Volunteer",
        "Healthy Volunteers",
        "Healthy Adult",
        "Healthy Male and Female Subjects",
        "Healthy Subjects",
        "Healthy Volunteers Only",
        "Healthy Non-smokers"
      ],
      "interventions": [
        {
          "name": "Negative control",
          "type": "OTHER"
        },
        {
          "name": "Avocado",
          "type": "OTHER"
        },
        {
          "name": "Fat and fiber addition",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Vermont Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 30,
      "start_date": "2025-03-24",
      "completion_date": "2026-03-26",
      "has_results": false,
      "last_update_posted_date": "2026-07-22",
      "last_synced_at": "2026-10-26T12:34:52.911Z",
      "location_count": 1,
      "location_summary": "Burlington, Vermont",
      "locations": [
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06818032"
    }
  ]
}