{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Denileukin+diftitox+%28Ontak%29",
    "query": {
      "intervention": "Denileukin diftitox (Ontak)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 45,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Denileukin+diftitox+%28Ontak%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T00:45:13.463Z",
  "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": "NCT00211185",
      "title": "A Study of ONTAK and CHOP in Newly Diagnosed, Peripheral T-Cell Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Lymphoma, T-Cell, Peripheral"
      ],
      "interventions": [
        {
          "name": "Denileukin diftitox",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin",
          "type": "DRUG"
        },
        {
          "name": "Vincristine",
          "type": "DRUG"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        },
        {
          "name": "Pegfilgrastim",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Eisai Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2004-03-14",
      "completion_date": "2009-12-23",
      "has_results": true,
      "last_update_posted_date": "2020-03-18",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 49,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Stanford, California + 42 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00211185"
    },
    {
      "nct_id": "NCT00211276",
      "title": "A Study of ONTAK in Patients With Relapsed or Refractory, B-Cell Non Hodgkin's Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Lymphoma, B-Cell"
      ],
      "interventions": [
        {
          "name": "ONTAK (denileukin diftitox)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eisai Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2005-03",
      "completion_date": "2007-02",
      "has_results": false,
      "last_update_posted_date": "2012-03-14",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 12,
      "location_summary": "Beverly Hills, California • Fountain Valley, California • Los Angeles, California + 9 more",
      "locations": [
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00211276"
    },
    {
      "nct_id": "NCT00082758",
      "title": "hu14.18-Interleukin-2 Fusion Protein in Treating Young Patients With Recurrent or Refractory Neuroblastoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Neuroblastoma"
      ],
      "interventions": [
        {
          "name": "hu14.18-Interleukin-2 fusion protein",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 39,
      "start_date": "2005-08",
      "completion_date": "2012-05",
      "has_results": true,
      "last_update_posted_date": "2015-02-12",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 69,
      "location_summary": "Birmingham, Alabama • Little Rock, Arkansas • Los Angeles, California + 61 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Madera",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00082758"
    },
    {
      "nct_id": "NCT00726037",
      "title": "A Pilot Study, Evaluating the Efficacy of Regulatory T-cell Suppression by Ontak in Metastatic Pancreatic Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Pancreatic Cancer"
      ],
      "interventions": [
        {
          "name": "Ontak",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Loyola University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2008-10",
      "completion_date": "2012-01",
      "has_results": true,
      "last_update_posted_date": "2016-09-29",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 1,
      "location_summary": "Maywood, Illinois",
      "locations": [
        {
          "city": "Maywood",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00726037"
    },
    {
      "nct_id": "NCT00128622",
      "title": "Denileukin Diftitox Followed by Vaccine Therapy in Treating Patients With Metastatic Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Cancer",
        "Colorectal Cancer",
        "Lung Cancer",
        "Pancreatic Cancer",
        "Unspecified Adult Solid Tumor, Protocol Specific"
      ],
      "interventions": [
        {
          "name": "denileukin diftitox",
          "type": "BIOLOGICAL"
        },
        {
          "name": "recombinant fowlpox-CEA(6D)/TRICOM vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "therapeutic autologous dendritic cells",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "H. Kim Lyerly",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2005-09",
      "completion_date": "2009-05",
      "has_results": false,
      "last_update_posted_date": "2012-11-12",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 2,
      "location_summary": "Washington D.C., District of Columbia • Durham, North Carolina",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00128622"
    },
    {
      "nct_id": "NCT00224874",
      "title": "Treatment for Acute Graft-Versus-Host Disease (BMT CTN 0302)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Graft vs Host Disease",
        "Immune System Disorders"
      ],
      "interventions": [
        {
          "name": "Etanercept",
          "type": "DRUG"
        },
        {
          "name": "Mycophenolate Mofetil",
          "type": "DRUG"
        },
        {
          "name": "Denileukin Diftitox",
          "type": "DRUG"
        },
        {
          "name": "Pentostatin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 180,
      "start_date": "2005-09",
      "completion_date": "2012-06",
      "has_results": true,
      "last_update_posted_date": "2021-11-01",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 19,
      "location_summary": "Duarte, California • San Diego, California • Stanford, California + 16 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00224874"
    },
    {
      "nct_id": "NCT00055146",
      "title": "Study of ONTAK in Patients With B-Cell Chronic Lymphocytic Leukemia (CLL)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Leukemia, Lymphocytic, Chronic"
      ],
      "interventions": [
        {
          "name": "ONTAK",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eisai Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 41,
      "start_date": "2003-03",
      "completion_date": "2006-05",
      "has_results": false,
      "last_update_posted_date": "2009-04-17",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 5,
      "location_summary": "Fountain Valley, California • La Jolla, California • Chicago, Illinois + 2 more",
      "locations": [
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00055146"
    },
    {
      "nct_id": "NCT00880360",
      "title": "A Trial of Intravenous Denileukin Diftitox in Stage III or IV Ovarian Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Epithelial Ovarian Cancer",
        "Extraovarian Peritoneal Cancer",
        "Fallopian Tube Carcinoma"
      ],
      "interventions": [
        {
          "name": "Ontak",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "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": 19,
      "start_date": "2007-02",
      "completion_date": "2010-04",
      "has_results": true,
      "last_update_posted_date": "2018-03-27",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00880360"
    },
    {
      "nct_id": "NCT00515528",
      "title": "Vaccination Plus Ontak in Patients With Metastatic Melanoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Melanoma"
      ],
      "interventions": [
        {
          "name": "4-peptide melanoma vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ontak",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "University of Chicago",
      "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": "2007-04-23",
      "completion_date": "2016-03",
      "has_results": true,
      "last_update_posted_date": "2021-01-26",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00515528"
    },
    {
      "nct_id": "NCT00326508",
      "title": "Combination Daclizumab/Denileukin Diftitox to Treat Uveitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Non-infectious Intermediate and Posterior Uveitis"
      ],
      "interventions": [
        {
          "name": "Daclizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Eye Institute (NEI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 5,
      "start_date": "2006-05-11",
      "completion_date": "2006-12-20",
      "has_results": false,
      "last_update_posted_date": "2017-07-02",
      "last_synced_at": "2026-09-29T00:45:13.463Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00326508"
    }
  ]
}