{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=natalizumab&page=2",
    "query": {
      "intervention": "natalizumab",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=natalizumab&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T03:03:46.045Z",
  "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": "NCT01970410",
      "title": "MAIN STUDY: SWITCH SUB-STUDY: SWITCH-JCV",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "teriflunomide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Providence Health & Services",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "21 Years to 60 Years"
      },
      "enrollment_count": 55,
      "start_date": "2013-10",
      "completion_date": "2022-02-14",
      "has_results": true,
      "last_update_posted_date": "2023-01-30",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 3,
      "location_summary": "Phoenix, Arizona • Latham, New York • Portland, Oregon",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Latham",
          "state": "New York"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01970410"
    },
    {
      "nct_id": "NCT02483845",
      "title": "Natalizumab in Inclusion Body Myositis (IBM)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Inclusion Body Myositis (IBM)"
      ],
      "interventions": [
        {
          "name": "Natalizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Phoenix Neurological Associates, LTD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "21 Years to 85 Years"
      },
      "enrollment_count": 6,
      "start_date": "2013-05",
      "completion_date": "2017-11",
      "has_results": false,
      "last_update_posted_date": "2017-02-09",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02483845"
    },
    {
      "nct_id": "NCT05618301",
      "title": "Motixafortide and Natalizumab to Mobilize CD34+ Hematopoietic Stem Cells for Gene Therapies in Sickle Cell Disease (SCD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Motixafortide",
          "type": "DRUG"
        },
        {
          "name": "Natalizumab",
          "type": "DRUG"
        },
        {
          "name": "Leukapheresis",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2023-07-07",
      "completion_date": "2025-06-24",
      "has_results": false,
      "last_update_posted_date": "2025-08-11",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05618301"
    },
    {
      "nct_id": "NCT01591551",
      "title": "NAPS-MS: NAtalizumab Effects on Parameters of Sleep in Patients With Multiple Sclerosis Experiencing Fatigue or Sleepiness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Multiple Sclerosis, Relapsing-Remitting"
      ],
      "interventions": [
        {
          "name": "Natalizumab (Tysabri)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cornerstone Health Care, PA",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 37,
      "start_date": "2012-03",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2014-01-29",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 3,
      "location_summary": "Patchogue, New York • High Point, North Carolina • Portland, Oregon",
      "locations": [
        {
          "city": "Patchogue",
          "state": "New York"
        },
        {
          "city": "High Point",
          "state": "North Carolina"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01591551"
    },
    {
      "nct_id": "NCT03399981",
      "title": "Tysabri Observational Cohort Study - Multiple Sclerosis (MS) Registries",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Progressive Multifocal Leukoencephalopathy"
      ],
      "interventions": [
        {
          "name": "Tysabri",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 80327,
      "start_date": "2017-06-01",
      "completion_date": "2023-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-03-19",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 1,
      "location_summary": "Cambridge, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03399981"
    },
    {
      "nct_id": "NCT02241785",
      "title": "Natalizumab as an Efficacy Switch in Participants With Relapsing Multiple Sclerosis After Failure on Other Therapies",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Relapsing Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "natalizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 47,
      "start_date": "2014-09-30",
      "completion_date": "2016-05-02",
      "has_results": true,
      "last_update_posted_date": "2017-06-05",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 11,
      "location_summary": "Fullerton, California • Aurora, Colorado • Des Moines, Iowa + 8 more",
      "locations": [
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Des Moines",
          "state": "Iowa"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Plainview",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02241785"
    },
    {
      "nct_id": "NCT01070823",
      "title": "JC-Virus (JCV) Antibody Program",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Tysabri® (natalizumab)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1096,
      "start_date": "2010-03",
      "completion_date": "2012-06",
      "has_results": false,
      "last_update_posted_date": "2016-10-05",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 11,
      "location_summary": "Aurora, Colorado • Atlanta, Georgia • Cullman, Georgia + 8 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Cullman",
          "state": "Georgia"
        },
        {
          "city": "Barrington",
          "state": "Illinois"
        },
        {
          "city": "Brighton",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01070823"
    },
    {
      "nct_id": "NCT00083759",
      "title": "Natalizumab in the Treatment of Rheumatoid Arthritis in Subjects Receiving Methotrexate",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "natalizumab",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 299,
      "start_date": "2004-05",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2016-07-18",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 10,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • Escondido, California + 7 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Escondido",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Maine"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00083759"
    },
    {
      "nct_id": "NCT04796584",
      "title": "Efficacy of COVID-19 Vaccination in Patients With Multiple Sclerosis Treated With Immune Modulating Medication",
      "overall_status": "TERMINATED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Analysis of cell-mediated and antibody-mediated immunity to SARS-CoV-2 virus",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Providence Health & Services",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 20,
      "start_date": "2022-07-11",
      "completion_date": "2022-10-25",
      "has_results": false,
      "last_update_posted_date": "2023-04-03",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04796584"
    },
    {
      "nct_id": "NCT01710228",
      "title": "Alternative Treatment Paradigm for Natalizumab Trial",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Multiple Sclerosis (MS)"
      ],
      "interventions": [
        {
          "name": "methylprednisolone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 0,
      "start_date": "2013-07",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2016-12-29",
      "last_synced_at": "2026-09-26T03:03:46.045Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01710228"
    }
  ]
}