{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ritonavir+%28RTV%29&page=4",
    "query": {
      "intervention": "Ritonavir (RTV)",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 451,
    "total_pages": 46,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ritonavir+%28RTV%29&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ritonavir+%28RTV%29&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-13T13:30:42.175Z",
  "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": "NCT02511431",
      "title": "Treatment of Chronic Delta Hepatitis With Lonafarnib and Ritonavir",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hepatitis D"
      ],
      "interventions": [
        {
          "name": "Lonafarnib",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2015-07-29",
      "completion_date": "2017-02-23",
      "has_results": true,
      "last_update_posted_date": "2018-09-25",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02511431"
    },
    {
      "nct_id": "NCT00920088",
      "title": "Drug Interaction Study of Darunavir/Ritonavir and Lopinavir/Ritonavir on GSK2248761 PK and CYP450 Probe Drugs",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Subjects",
        "Infection, Human Immunodeficiency Virus"
      ],
      "interventions": [
        {
          "name": "darunavir/ritonavir",
          "type": "DRUG"
        },
        {
          "name": "lopinavir/ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Midazolam",
          "type": "DRUG"
        },
        {
          "name": "Dextromethorphan",
          "type": "DRUG"
        },
        {
          "name": "Flurbiprofen",
          "type": "DRUG"
        },
        {
          "name": "GSK2248761",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 24,
      "start_date": "2009-06",
      "completion_date": "2009-11",
      "has_results": false,
      "last_update_posted_date": "2010-11-03",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00920088"
    },
    {
      "nct_id": "NCT02016924",
      "title": "Study of Cobicistat-Boosted Atazanavir (ATV/co), Cobicistat-Boosted Darunavir (DRV/co) and Emtricitabine/Tenofovir Alafenamide (F/TAF) in Children With HIV",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Acquired Immune Deficiency Syndrome (AIDS)",
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "ATV",
          "type": "DRUG"
        },
        {
          "name": "DRV",
          "type": "DRUG"
        },
        {
          "name": "Cobicistat",
          "type": "DRUG"
        },
        {
          "name": "BR",
          "type": "DRUG"
        },
        {
          "name": "F/TAF",
          "type": "DRUG"
        },
        {
          "name": "LPV/r",
          "type": "DRUG"
        },
        {
          "name": "Third Unboosted Drug",
          "type": "DRUG"
        },
        {
          "name": "Cobicistat TOS",
          "type": "DRUG"
        },
        {
          "name": "F/TAF TOS",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Weeks",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "4 Weeks to 17 Years"
      },
      "enrollment_count": 133,
      "start_date": "2014-01-16",
      "completion_date": "2027-03",
      "has_results": false,
      "last_update_posted_date": "2026-04-21",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 7,
      "location_summary": "Long Beach, California • Los Angeles, California • Aurora, Colorado + 4 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02016924"
    },
    {
      "nct_id": "NCT00259727",
      "title": "The Study of HIV Protease Inhibitors and Their Effects on Glucose Metabolism",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Diabetes",
        "HIV Infections",
        "Insulin Resistance"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "72 Years",
        "sex": "ALL",
        "summary": "18 Years to 72 Years"
      },
      "enrollment_count": 80,
      "start_date": "2006-01",
      "completion_date": "2008-09",
      "has_results": false,
      "last_update_posted_date": "2009-09-30",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00259727"
    },
    {
      "nct_id": "NCT07090486",
      "title": "A Study to Understand How the Use of Paxlovid Affected Healthcare Use in People With Pre-existing Conditions.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "nirmatrelvir-ritonavir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14000,
      "start_date": "2025-04-15",
      "completion_date": "2025-04-15",
      "has_results": false,
      "last_update_posted_date": "2025-07-29",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07090486"
    },
    {
      "nct_id": "NCT05692570",
      "title": "A Study of PBI-200 With Ritonavir or Cobicistat in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Drug-drug Interaction"
      ],
      "interventions": [
        {
          "name": "PBI-200 Tablet",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "Cobicistat Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pyramid Biosciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 21,
      "start_date": "2022-09-09",
      "completion_date": "2022-11-12",
      "has_results": false,
      "last_update_posted_date": "2023-01-20",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 1,
      "location_summary": "Tempe, Arizona",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05692570"
    },
    {
      "nct_id": "NCT05150691",
      "title": "A Phase 1/2a Study of DB-1303/BNT323 in Advanced/Metastatic Solid Tumors",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "HER2-positive Advanced Solid Tumor"
      ],
      "interventions": [
        {
          "name": "DB-1303/BNT323",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pertuzumab Injection",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Itraconazole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "DualityBio Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 796,
      "start_date": "2022-01-31",
      "completion_date": "2027-10",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 35,
      "location_summary": "Cerritos, California • Los Angeles, California • San Diego, California + 29 more",
      "locations": [
        {
          "city": "Cerritos",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Coral Springs",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05150691"
    },
    {
      "nct_id": "NCT03719313",
      "title": "Study of the Efficacy and Safety of Lonafarnib / Ritonavir With and Without Pegylated Interferon -Alfa-2a",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hepatitis Delta Virus"
      ],
      "interventions": [
        {
          "name": "Lonafarnib",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "PEG IFN-alfa-2a",
          "type": "DRUG"
        },
        {
          "name": "Placebo Lonafarnib",
          "type": "DRUG"
        },
        {
          "name": "Placebo Ritonavir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eiger BioPharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 407,
      "start_date": "2018-12-01",
      "completion_date": "2023-03-24",
      "has_results": false,
      "last_update_posted_date": "2023-04-14",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 18,
      "location_summary": "Fresno, California • Los Angeles, California • Palo Alto, California + 12 more",
      "locations": [
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03719313"
    },
    {
      "nct_id": "NCT00105079",
      "title": "GEMINI Study - A Study of Saquinavir/Ritonavir in Treatment-Naive Patients With HIV-1 Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "saquinavir [Invirase]",
          "type": "DRUG"
        },
        {
          "name": "Lopinavir/ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Emtricitabine/tenofovir disoproxil fumarate",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 337,
      "start_date": "2005-04",
      "completion_date": "2008-07",
      "has_results": true,
      "last_update_posted_date": "2011-11-02",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 19,
      "location_summary": "Hobson City, Alabama • Tucson, Arizona • Berkeley, California + 16 more",
      "locations": [
        {
          "city": "Hobson City",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Berkeley",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00105079"
    },
    {
      "nct_id": "NCT00811954",
      "title": "Comparative Study of Three NNRTI-Sparing HAART Regimens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV Infection"
      ],
      "interventions": [
        {
          "name": "Emtricitabine/tenofovir disoproxil fumarate",
          "type": "DRUG"
        },
        {
          "name": "Raltegravir",
          "type": "DRUG"
        },
        {
          "name": "Darunavir",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Atazanavir",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1814,
      "start_date": "2009-05",
      "completion_date": "2013-06",
      "has_results": true,
      "last_update_posted_date": "2014-09-05",
      "last_synced_at": "2026-10-13T13:30:42.175Z",
      "location_count": 55,
      "location_summary": "Birmingham, Alabama • Long Beach, California • Los Angeles, California + 39 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00811954"
    }
  ]
}