{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ancillary%2FCorrelative",
    "query": {
      "intervention": "Ancillary/Correlative"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 504,
    "total_pages": 51,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ancillary%2FCorrelative&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-08T05:44:38.024Z",
  "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": "NCT00784394",
      "title": "Diindolylmethane in Preventing Cancer in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy, no Evidence of Disease"
      ],
      "interventions": [
        {
          "name": "diindolylmethane",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "quality-of-life assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 20,
      "start_date": "2004-04",
      "completion_date": "2009-10",
      "has_results": false,
      "last_update_posted_date": "2016-12-29",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00784394"
    },
    {
      "nct_id": "NCT01596634",
      "title": "Bovine Lactoferrin in Reducing Taste Disturbances in Patients With Colorectal Cancer Receiving Oxaliplatin-Based Chemotherapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Colorectal Cancer",
        "Dysgeusia",
        "Oral Complications of Chemotherapy"
      ],
      "interventions": [
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "bovine lactoferrin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "OTHER",
        "PROCEDURE",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "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": "2013-01",
      "completion_date": "2015-10-10",
      "has_results": false,
      "last_update_posted_date": "2018-07-03",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01596634"
    },
    {
      "nct_id": "NCT01932697",
      "title": "Radiation Therapy and Docetaxel in Treating Patients With HPV-Related Oropharyngeal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Human Papillomavirus Infection",
        "Stage I Oropharyngeal Squamous Cell Carcinoma",
        "Stage II Oropharyngeal Squamous Cell Carcinoma",
        "Stage III Oropharyngeal Squamous Cell Carcinoma",
        "Stage IVA Oropharyngeal Squamous Cell Carcinoma",
        "Stage IVB Oropharyngeal Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Docetaxel",
          "type": "DRUG"
        },
        {
          "name": "Hyperfractionation",
          "type": "RADIATION"
        },
        {
          "name": "Intensity-Modulated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 81,
      "start_date": "2013-09-04",
      "completion_date": "2021-12-28",
      "has_results": true,
      "last_update_posted_date": "2026-02-10",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 2,
      "location_summary": "Scottsdale, Arizona • Rochester, Minnesota",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01932697"
    },
    {
      "nct_id": "NCT00919750",
      "title": "Collecting and Storing Blood and Brain Tumor Tissue Samples From Children With Brain Tumors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Childhood Atypical Teratoid/Rhabdoid Tumor",
        "Childhood Central Nervous System Germ Cell Tumor",
        "Childhood Cerebral Anaplastic Astrocytoma",
        "Childhood Cerebral Astrocytoma",
        "Childhood Choroid Plexus Neoplasm",
        "Childhood Craniopharyngioma",
        "Childhood Grade I Meningioma",
        "Childhood Grade II Meningioma",
        "Childhood Grade III Meningioma",
        "Childhood Infratentorial Ependymoma",
        "Childhood Oligodendroglioma",
        "Childhood Supratentorial Ependymoma",
        "Ependymoma",
        "Newly Diagnosed Childhood Ependymoma",
        "Recurrent Childhood Cerebellar Astrocytoma",
        "Recurrent Childhood Cerebral Astrocytoma",
        "Recurrent Childhood Ependymoma",
        "Recurrent Childhood Medulloblastoma",
        "Recurrent Childhood Supratentorial Embryonal Tumor, Not Otherwise Specified",
        "Recurrent Childhood Visual Pathway Glioma"
      ],
      "interventions": [
        {
          "name": "Cytology Specimen Collection Procedure",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "Up to 18 Years"
      },
      "enrollment_count": 1258,
      "start_date": "2004-02-16",
      "completion_date": "2018-06-30",
      "has_results": false,
      "last_update_posted_date": "2018-07-16",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 163,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 123 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00919750"
    },
    {
      "nct_id": "NCT00026182",
      "title": "Rituximab and Interleukin-12 in Treating Patients With B-Cell Non-Hodgkin's Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue",
        "Nodal Marginal Zone B-cell Lymphoma",
        "Recurrent Grade 1 Follicular Lymphoma",
        "Recurrent Grade 2 Follicular Lymphoma",
        "Recurrent Mantle Cell Lymphoma",
        "Recurrent Small Lymphocytic Lymphoma",
        "Splenic Marginal Zone Lymphoma"
      ],
      "interventions": [
        {
          "name": "rituximab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "recombinant interleukin-12",
          "type": "BIOLOGICAL"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 99,
      "start_date": "2001-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-08-26",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00026182"
    },
    {
      "nct_id": "NCT02491359",
      "title": "Carfilzomib in Treating Patients With Chronic Graft-Versus-Host Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Graft Versus Host Disease"
      ],
      "interventions": [
        {
          "name": "Carfilzomib",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Fred Hutchinson 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": 20,
      "start_date": "2015-11-12",
      "completion_date": "2018-09-12",
      "has_results": true,
      "last_update_posted_date": "2019-02-06",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 5,
      "location_summary": "Tampa, Florida • Buffalo, New York • Columbus, Ohio + 2 more",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02491359"
    },
    {
      "nct_id": "NCT03278925",
      "title": "Defined Green Tea Catechin Extract in Preventing Liver Cancer in Participants With Cirrhosis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cirrhosis"
      ],
      "interventions": [
        {
          "name": "Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Defined Green Tea Catechin Extract",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Pharmacological Study",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Ultrasound",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2018-08-09",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-08-02",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03278925"
    },
    {
      "nct_id": "NCT01294280",
      "title": "Biomarkers in Predicting Response in Patients With Early-Stage Non-Small Cell Lung Cancer Previously Treated With Adjuvant Chemotherapy",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Lung Cancer"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 241,
      "start_date": "2008-07",
      "completion_date": "2016-02-02",
      "has_results": false,
      "last_update_posted_date": "2021-01-20",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 1,
      "location_summary": "Syracuse, New York",
      "locations": [
        {
          "city": "Syracuse",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01294280"
    },
    {
      "nct_id": "NCT01476410",
      "title": "Brentuximab Vedotin and Combination Chemotherapy in Treating Older Patients With Previously Untreated Stage II-IV Hodgkin Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adult Lymphocyte Depletion Hodgkin Lymphoma",
        "Adult Lymphocyte Predominant Hodgkin Lymphoma",
        "Adult Mixed Cellularity Hodgkin Lymphoma",
        "Adult Nodular Sclerosis Hodgkin Lymphoma",
        "Stage II Adult Hodgkin Lymphoma",
        "Stage III Adult Hodgkin Lymphoma",
        "Stage IV Adult Hodgkin Lymphoma"
      ],
      "interventions": [
        {
          "name": "brentuximab vedotin",
          "type": "DRUG"
        },
        {
          "name": "doxorubicin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "vinblastine",
          "type": "DRUG"
        },
        {
          "name": "dacarbazine",
          "type": "DRUG"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        },
        {
          "name": "DNA analysis",
          "type": "GENETIC"
        },
        {
          "name": "RNA analysis",
          "type": "GENETIC"
        },
        {
          "name": "fludeoxyglucose F 18",
          "type": "RADIATION"
        },
        {
          "name": "positron emission tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "immunohistochemistry staining method",
          "type": "OTHER"
        },
        {
          "name": "polymorphism analysis",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "GENETIC",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "60 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2011-11",
      "completion_date": "2020-05-26",
      "has_results": true,
      "last_update_posted_date": "2026-05-22",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 7,
      "location_summary": "Stanford, California • Chicago, Illinois • Boston, Massachusetts + 3 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01476410"
    },
    {
      "nct_id": "NCT00897442",
      "title": "Collecting Tumor Samples From Patients With Gynecological Tumors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Borderline Ovarian Clear Cell Tumor",
        "Borderline Ovarian Serous Tumor",
        "Cervical Adenocarcinoma",
        "Cervical Adenosquamous Carcinoma",
        "Cervical Small Cell Carcinoma",
        "Cervical Squamous Cell Carcinoma, Not Otherwise Specified",
        "Childhood Embryonal Rhabdomyosarcoma",
        "Childhood Malignant Ovarian Germ Cell Tumor",
        "Endometrioid Stromal Sarcoma",
        "Gestational Trophoblastic Tumor",
        "Malignant Mesothelioma",
        "Malignant Ovarian Epithelial Tumor",
        "Melanoma",
        "Neoplasm of Uncertain Malignant Potential",
        "Ovarian Brenner Tumor",
        "Ovarian Clear Cell Cystadenocarcinoma",
        "Ovarian Serous Cystadenocarcinoma",
        "Paget Disease of the Vulva",
        "Recurrent Cervical Carcinoma",
        "Recurrent Fallopian Tube Carcinoma",
        "Recurrent Ovarian Carcinoma",
        "Recurrent Ovarian Germ Cell Tumor",
        "Recurrent Primary Peritoneal Carcinoma",
        "Recurrent Uterine Corpus Carcinoma",
        "Recurrent Vaginal Carcinoma",
        "Recurrent Vulvar Carcinoma",
        "Stage I Ovarian Cancer",
        "Stage I Uterine Corpus Cancer",
        "Stage I Vaginal Cancer",
        "Stage I Vulvar Cancer",
        "Stage IA Cervical Cancer",
        "Stage IA Fallopian Tube Cancer",
        "Stage IA Ovarian Cancer",
        "Stage IA Ovarian Germ Cell Tumor",
        "Stage IB Cervical Cancer",
        "Stage IB Fallopian Tube Cancer",
        "Stage IB Ovarian Cancer",
        "Stage IB Ovarian Germ Cell Tumor",
        "Stage IC Fallopian Tube Cancer",
        "Stage IC Ovarian Cancer",
        "Stage IC Ovarian Germ Cell Tumor",
        "Stage II Ovarian Cancer",
        "Stage II Uterine Corpus Cancer",
        "Stage II Vaginal Cancer",
        "Stage II Vulvar Cancer",
        "Stage IIA Cervical Cancer",
        "Stage IIA Fallopian Tube Cancer",
        "Stage IIA Ovarian Cancer",
        "Stage IIA Ovarian Germ Cell Tumor",
        "Stage IIB Cervical Cancer",
        "Stage IIB Fallopian Tube Cancer",
        "Stage IIB Ovarian Cancer",
        "Stage IIB Ovarian Germ Cell Tumor",
        "Stage IIC Fallopian Tube Cancer",
        "Stage IIC Ovarian Cancer",
        "Stage IIC Ovarian Germ Cell Tumor",
        "Stage III Borderline Ovarian Surface Epithelial-Stromal Tumor",
        "Stage III Cervical Cancer",
        "Stage III Uterine Corpus Cancer",
        "Stage III Vaginal Cancer",
        "Stage III Vulvar Cancer",
        "Stage IIIA Fallopian Tube Cancer",
        "Stage IIIA Ovarian Cancer",
        "Stage IIIA Ovarian Germ Cell Tumor",
        "Stage IIIA Primary Peritoneal Cancer",
        "Stage IIIB Fallopian Tube Cancer",
        "Stage IIIB Ovarian Cancer",
        "Stage IIIB Ovarian Germ Cell Tumor",
        "Stage IIIB Primary Peritoneal Cancer",
        "Stage IIIC Fallopian Tube Cancer",
        "Stage IIIC Ovarian Cancer",
        "Stage IIIC Ovarian Germ Cell Tumor",
        "Stage IIIC Primary Peritoneal Cancer",
        "Stage IV Borderline Ovarian Surface Epithelial-Stromal Tumor",
        "Stage IV Fallopian Tube Cancer",
        "Stage IV Ovarian Cancer",
        "Stage IV Primary Peritoneal Cancer",
        "Stage IV Uterine Corpus Cancer",
        "Stage IVA Cervical Cancer",
        "Stage IVA Vaginal Cancer",
        "Stage IVB Cervical Cancer",
        "Stage IVB Vaginal Cancer",
        "Stage IVB Vulvar Cancer",
        "Uterine Corpus Cancer",
        "Uterine Corpus Leiomyosarcoma",
        "Vulvar Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Gynecologic Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 275,
      "start_date": "1992-06",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2016-10-28",
      "last_synced_at": "2026-09-08T05:44:38.024Z",
      "location_count": 187,
      "location_summary": "Fayetteville, Arkansas • Little Rock, Arkansas • Burbank, California + 128 more",
      "locations": [
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Fayetteville",
          "state": "Arkansas"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Burbank",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00897442"
    }
  ]
}