{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ancillary+Study&page=21",
    "query": {
      "intervention": "Ancillary Study",
      "page": 21
    },
    "page_size": 10
  },
  "pagination": {
    "page": 21,
    "page_size": 10,
    "total_count": 2162,
    "total_pages": 217,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ancillary+Study&page=22&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ancillary+Study&page=20&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-20T07:25:59.540Z",
  "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": "NCT02451124",
      "title": "Non-endoscopic Brushing of the Esophagus Using a Non-endoscopic Inflatable Balloon of the Esophagus in Screening for Barrett Esophagus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Barrett Esophagus"
      ],
      "interventions": [
        {
          "name": "non-endoscopic inflatable balloon for the esophagus",
          "type": "DEVICE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "esophagogastroduodenoscopy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Case Comprehensive 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": 156,
      "start_date": "2015-07",
      "completion_date": "2017-01-29",
      "has_results": true,
      "last_update_posted_date": "2019-11-06",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 2,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02451124"
    },
    {
      "nct_id": "NCT01169337",
      "title": "Lenalidomide or Observation in Treating Patients With Asymptomatic High-Risk Smoldering Multiple Myeloma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Light Chain Deposition Disease",
        "Smoldering Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Clinical Observation",
          "type": "OTHER"
        },
        {
          "name": "Lenalidomide",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "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": 226,
      "start_date": "2011-01-24",
      "completion_date": "2027-05-19",
      "has_results": true,
      "last_update_posted_date": "2026-10-01",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 601,
      "location_summary": "Anchorage, Alaska • Phoenix, Arizona • Scottsdale, Arizona + 390 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01169337"
    },
    {
      "nct_id": "NCT06260332",
      "title": "Physical Activity Intervention for the Improvement of Pain in Young, Hispanic Breast Cancer Survivors",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Supportive Care (Fitbit)",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "New Mexico Cancer Research Alliance",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 60 Years · Female only"
      },
      "enrollment_count": 25,
      "start_date": "2023-10-20",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-10-23",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06260332"
    },
    {
      "nct_id": "NCT06559709",
      "title": "A Plant-Based Whole-Foods Meal Delivery Service for Patients With Multiple Myeloma Undergoing Autologous Hematopoietic Cell Transplant",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Multiple Myeloma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Dietary Intervention",
          "type": "OTHER"
        },
        {
          "name": "Medical Chart Review",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "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": 26,
      "start_date": "2024-10-14",
      "completion_date": "2025-08-29",
      "has_results": false,
      "last_update_posted_date": "2025-09-08",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06559709"
    },
    {
      "nct_id": "NCT01957514",
      "title": "Collecting, Analyzing, and Storing Samples From Patients With Metastatic, Triple Negative Breast Cancer Receiving Anti-cancer Therapy",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Estrogen Receptor Negative",
        "HER2/Neu Negative",
        "Progesterone Receptor Negative",
        "Stage IV Breast Cancer AJCC v6 and v7",
        "Triple-Negative Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cytology Specimen Collection Procedure",
          "type": "OTHER"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Washington",
      "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": 31,
      "start_date": "2013-10-28",
      "completion_date": "2018-06-30",
      "has_results": false,
      "last_update_posted_date": "2021-09-30",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 2,
      "location_summary": "Seattle, Washington • Tacoma, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        },
        {
          "city": "Tacoma",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01957514"
    },
    {
      "nct_id": "NCT04929028",
      "title": "Therapy Adapted for High Risk and Low Risk HIV-Associated Anal Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "AIDS-Related Anal Carcinoma",
        "Anal Margin Squamous Cell Carcinoma",
        "Anal Non-Keratinizing Squamous Cell Carcinoma",
        "Anal Squamous Cell Carcinoma",
        "HIV Infection",
        "Rectal Squamous Cell Carcinoma",
        "Stage II Rectal Cancer AJCC v8",
        "Stage IIB Anal Cancer AJCC v8",
        "Stage III Anal Cancer AJCC v8",
        "Stage III Rectal Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Anoscopy",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Capecitabine",
          "type": "DRUG"
        },
        {
          "name": "Colonoscopy",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Digital Rectal Examination",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiography Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Fludeoxyglucose F-18",
          "type": "OTHER"
        },
        {
          "name": "Fluorouracil",
          "type": "DRUG"
        },
        {
          "name": "Intensity-Modulated Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Lymph Node Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Mitomycin",
          "type": "DRUG"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Proctoscopy",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Sigmoidoscopy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "OTHER",
        "RADIATION",
        "BIOLOGICAL"
      ],
      "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": 40,
      "start_date": "2022-08-09",
      "completion_date": "2031-09-15",
      "has_results": false,
      "last_update_posted_date": "2026-10-05",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 14,
      "location_summary": "San Francisco, California • Washington D.C., District of Columbia • Tampa, Florida + 7 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04929028"
    },
    {
      "nct_id": "NCT04000581",
      "title": "Impact of Early Mobility on Post-Surgery Recovery in Patients Undergoing Oncologic Surgeries",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Malignant Neoplasm"
      ],
      "interventions": [
        {
          "name": "Best Practice",
          "type": "OTHER"
        },
        {
          "name": "Physical Activity",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 17,
      "start_date": "2019-05-31",
      "completion_date": "2020-04-10",
      "has_results": true,
      "last_update_posted_date": "2022-07-22",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04000581"
    },
    {
      "nct_id": "NCT04774744",
      "title": "Effect of Digital Health Coaching Program on Self-efficacy and Patient Reported Outcomes of Patients With Newly Diagnosed Acute Myeloid Leukemia or Chronic Lymphocytic Leukemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Acute Myeloid Leukemia",
        "Chronic Lymphocytic Leukemia"
      ],
      "interventions": [
        {
          "name": "Educational Intervention",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Supportive Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 157,
      "start_date": "2020-03-17",
      "completion_date": "2023-09-13",
      "has_results": false,
      "last_update_posted_date": "2023-09-18",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04774744"
    },
    {
      "nct_id": "NCT06453044",
      "title": "Mosunetuzumab and Polatuzumab Vedotin for the Treatment of Patients With Relapsed or Refractory Grade 1-3a Follicular Lymphoma",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Grade 1 Follicular Lymphoma",
        "Recurrent Grade 2 Follicular Lymphoma",
        "Recurrent Grade 3a Follicular Lymphoma",
        "Refractory Grade 1 Follicular Lymphoma",
        "Refractory Grade 2 Follicular Lymphoma",
        "Refractory Grade 3a Follicular Lymphoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Mosunetuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Polatuzumab Vedotin",
          "type": "DRUG"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "City of Hope Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 41,
      "start_date": "2024-09-09",
      "completion_date": "2028-03-14",
      "has_results": false,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 2,
      "location_summary": "Duarte, California • Irvine, California",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Irvine",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06453044"
    },
    {
      "nct_id": "NCT07474519",
      "title": "Studying the Relationship of Patient Positioning and Intravesical Bacillus Calmette Guerin Dwell Time to Improve the Treatment of Non-muscle Invasive Bladder Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Non-Muscle Invasive Bladder Carcinoma"
      ],
      "interventions": [
        {
          "name": "Accelerometry",
          "type": "PROCEDURE"
        },
        {
          "name": "BCG Solution",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Electronic Health Record Review",
          "type": "OTHER"
        },
        {
          "name": "Patient Discharge",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Survey Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL",
        "OTHER",
        "BEHAVIORAL"
      ],
      "sponsor": "Ohio State University Comprehensive 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": 40,
      "start_date": "2026-02-26",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-16",
      "last_synced_at": "2026-10-20T07:25:59.540Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07474519"
    }
  ]
}