{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Interferon+beta-1a&page=2",
    "query": {
      "intervention": "Interferon beta-1a",
      "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=Interferon+beta-1a&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T13:12:29.256Z",
  "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": "NCT01034579",
      "title": "The REbif® vs Glatiramer Acetate in Relapsing Multiple Sclerosis Pharmacogenetics Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Relapsing Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Blood sampling",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "EMD Serono",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 324,
      "start_date": "2010-02",
      "completion_date": "2010-11",
      "has_results": true,
      "last_update_posted_date": "2014-03-10",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 1,
      "location_summary": "Rockland, Massachusetts",
      "locations": [
        {
          "city": "Rockland",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01034579"
    },
    {
      "nct_id": "NCT00605215",
      "title": "BRAVO Study: Laquinimod Double-blind Placebo-controlled Study in Participants With Relapsing-Remitting Multiple Sclerosis (RRMS) With a Rater Blinded Reference Arm of Interferon β-1a (Avonex®)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Laquinimod",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Avonex®",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 1331,
      "start_date": "2008-04-24",
      "completion_date": "2011-06-10",
      "has_results": true,
      "last_update_posted_date": "2022-04-21",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 36,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 31 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00605215"
    },
    {
      "nct_id": "NCT01641120",
      "title": "Assessing Tolerability of Avonex Intramuscular Injections",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Avonex",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Trinity Health Of New England",
      "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": "2012-05",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2016-02-01",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 1,
      "location_summary": "Hartford, Connecticut",
      "locations": [
        {
          "city": "Hartford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01641120"
    },
    {
      "nct_id": "NCT00986960",
      "title": "Effect of Adrenocorticotropin Injection With Weekly Interferon Beta in Patients With Relapsing Remitting Multiple Sclerosis (MS)",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "repository corticotropin injection",
          "type": "DRUG"
        },
        {
          "name": "Saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University at Buffalo",
      "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": 0,
      "start_date": "2009-12",
      "completion_date": "2010-12",
      "has_results": false,
      "last_update_posted_date": "2021-01-05",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00986960"
    },
    {
      "nct_id": "NCT00530348",
      "title": "Comparison of Alemtuzumab and Rebif® Efficacy in Multiple Sclerosis, Study One",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Multiple Sclerosis, Relapsing-Remitting"
      ],
      "interventions": [
        {
          "name": "Alemtuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Interferon beta-1a",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Genzyme, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 581,
      "start_date": "2007-08",
      "completion_date": "2011-04",
      "has_results": true,
      "last_update_posted_date": "2014-11-24",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 36,
      "location_summary": "Cullman, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 31 more",
      "locations": [
        {
          "city": "Cullman",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fort Collins",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00530348"
    },
    {
      "nct_id": "NCT00525343",
      "title": "Avonex 15 Year Long Term Follow-up Study",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 122,
      "start_date": "2007-03",
      "completion_date": "2008-09",
      "has_results": false,
      "last_update_posted_date": "2010-03-08",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 4,
      "location_summary": "Washington D.C., District of Columbia • Buffalo, New York • Cleveland, Ohio + 1 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00525343"
    },
    {
      "nct_id": "NCT00179478",
      "title": "Long Term Study of Avonex Therapy Following a First Attack of Multiple Sclerosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Multiple Sclerosis",
        "Optic Neuritis",
        "Transverse Myelitis",
        "Acute Brainstem/Cerebellar Syndrome"
      ],
      "interventions": [
        {
          "name": "interferon beta 1a 30 ug IM once weekly",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Beth Israel Deaconess 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": 155,
      "start_date": "2001-02",
      "completion_date": "2009-03",
      "has_results": true,
      "last_update_posted_date": "2017-09-06",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 20,
      "location_summary": "Derby, Connecticut • Tampa, Florida • Atlanta, Georgia + 16 more",
      "locations": [
        {
          "city": "Derby",
          "state": "Connecticut"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Elk Grove",
          "state": "Illinois"
        },
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00179478"
    },
    {
      "nct_id": "NCT00340834",
      "title": "Efficacy and Safety of Fingolimod in Patients With Relapsing-remitting Multiple Sclerosis With Optional Extension Phase",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Fingolimod 1.25 mg",
          "type": "DRUG"
        },
        {
          "name": "Fingolimod 0.5 mg",
          "type": "DRUG"
        },
        {
          "name": "Interferon β-1a 30 µg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 1292,
      "start_date": "2006-05",
      "completion_date": "2011-07",
      "has_results": true,
      "last_update_posted_date": "2017-09-21",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 35,
      "location_summary": "Cullman, Alabama • Phoenix, Arizona • Oceanside, California + 31 more",
      "locations": [
        {
          "city": "Cullman",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "Danbury",
          "state": "Connecticut"
        },
        {
          "city": "Fairfield",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00340834"
    },
    {
      "nct_id": "NCT02269930",
      "title": "Study to Evaluate the Pharmacokinetic Profiles of BIIB017 (Peginterferon Beta-1a) and Rebif® (Interferon Beta-1a) in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "peginterferon beta-1a",
          "type": "DRUG"
        },
        {
          "name": "Rebif",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Biogen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 30,
      "start_date": "2014-10",
      "completion_date": "2014-12",
      "has_results": false,
      "last_update_posted_date": "2015-02-02",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 1,
      "location_summary": "Evansville, Indiana",
      "locations": [
        {
          "city": "Evansville",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02269930"
    },
    {
      "nct_id": "NCT01412333",
      "title": "A Study of Ocrelizumab in Comparison With Interferon Beta-1a (Rebif) in Participants With Relapsing Multiple Sclerosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Relapsing Multiple Sclerosis"
      ],
      "interventions": [
        {
          "name": "Interferon beta-1a",
          "type": "DRUG"
        },
        {
          "name": "Ocrelizumab-matching placebo",
          "type": "DRUG"
        },
        {
          "name": "Ocrelizumab",
          "type": "DRUG"
        },
        {
          "name": "Interferon beta-1a-matching placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 835,
      "start_date": "2011-09-20",
      "completion_date": "2022-12-30",
      "has_results": true,
      "last_update_posted_date": "2024-03-08",
      "last_synced_at": "2026-09-25T13:12:29.256Z",
      "location_count": 48,
      "location_summary": "Phoenix, Arizona • Scottsdale, Arizona • Tucson, Arizona + 43 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01412333"
    }
  ]
}