{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Recombinant+Human+Interleukin-21",
    "query": {
      "intervention": "Recombinant Human Interleukin-21"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T10:53:38.664Z",
  "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": "NCT00347971",
      "title": "Study of Recombinant Interleukin 21 in Combination With Rituxan for Non-Hodgkin's Lymphoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Lymphoma, Non-Hodgkin"
      ],
      "interventions": [
        {
          "name": "recombinant human interleukin 21 and rituximab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ZymoGenetics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 23,
      "start_date": "2006-06",
      "completion_date": "2008-04",
      "has_results": false,
      "last_update_posted_date": "2008-09-05",
      "last_synced_at": "2026-09-22T10:53:38.664Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00347971"
    },
    {
      "nct_id": "NCT01787474",
      "title": "Donor Natural Killer Cells in Treating Patients With Relapsed or Refractory Acute Myeloid Leukemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Recurrent Adult Acute Myeloid Leukemia",
        "Refractory Acute Myeloid Leukemia"
      ],
      "interventions": [
        {
          "name": "Cytarabine",
          "type": "DRUG"
        },
        {
          "name": "Filgrastim",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Filgrastim-sndz",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fludarabine Phosphate",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Membrane-bound Interleukin-21-Expanded Haploidentical Natural Killer Cells",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL",
        "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": 30,
      "start_date": "2014-05-19",
      "completion_date": "2021-06-17",
      "has_results": false,
      "last_update_posted_date": "2021-06-21",
      "last_synced_at": "2026-09-22T10:53:38.664Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01787474"
    },
    {
      "nct_id": "NCT00095108",
      "title": "Study of Interleukin-21 for Metastatic Malignant Melanoma and Metastatic Kidney Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Melanoma",
        "Kidney Neoplasms",
        "Metastases"
      ],
      "interventions": [
        {
          "name": "Recombinant Human Interleukin-21",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ZymoGenetics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 43,
      "start_date": "2004-05",
      "completion_date": "2007-01",
      "has_results": false,
      "last_update_posted_date": "2009-03-09",
      "last_synced_at": "2026-09-22T10:53:38.664Z",
      "location_count": 2,
      "location_summary": "Ann Arbor, Michigan • Seattle, Washington",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00095108"
    },
    {
      "nct_id": "NCT01629758",
      "title": "Safety Study of IL-21/Anti-PD-1 Combination in the Treatment of Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Neoplasms by Site"
      ],
      "interventions": [
        {
          "name": "Denenicokin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 33,
      "start_date": "2012-06",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2015-03-06",
      "last_synced_at": "2026-09-22T10:53:38.664Z",
      "location_count": 5,
      "location_summary": "Scottsdale, Arizona • New Haven, Connecticut • Tampa, Florida + 2 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01629758"
    }
  ]
}