{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Atazanavir%2Fritonavir+%28ATV%2Fr%29",
    "query": {
      "intervention": "Atazanavir/ritonavir (ATV/r)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 23,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Atazanavir%2Fritonavir+%28ATV%2Fr%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T17:23:02.508Z",
  "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": "NCT00756730",
      "title": "Lopinavir/r or Fosamprenavir/r Switch to Atazanavir/r or Darunavir/r",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "ATV/r",
          "type": "DRUG"
        },
        {
          "name": "DRV/r",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Community Research Initiative of New England",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 49,
      "start_date": "2008-09",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2017-08-21",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 11,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Orlando, Florida + 7 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Springfield",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00756730"
    },
    {
      "nct_id": "NCT01180075",
      "title": "Tenofovir, Emtricitabine, Efavirenz and Atazanavir Pharmacokinetics in the Aging HIV-Infected Population",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Human Immunodeficiency Virus"
      ],
      "interventions": [
        {
          "name": "tenofovir/emtricitabine/efavirenz (TDF/FTC/EFV)",
          "type": "DRUG"
        },
        {
          "name": "tenofovir/emtricitabine (TDF/FTC)",
          "type": "DRUG"
        },
        {
          "name": "Atazanavir (ATV)",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Phlebotomy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 85,
      "start_date": "2010-05",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2014-12-02",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01180075"
    },
    {
      "nct_id": "NCT02469246",
      "title": "Switch Study to Evaluate F/TAF in HIV-1 Infected Adults Who Are Virologically Suppressed on Regimens Containing ABC/3TC",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV-1 Infection"
      ],
      "interventions": [
        {
          "name": "F/TAF",
          "type": "DRUG"
        },
        {
          "name": "ABC/3TC",
          "type": "DRUG"
        },
        {
          "name": "ABC/3TC Placebo",
          "type": "DRUG"
        },
        {
          "name": "F/TAF Placebo",
          "type": "DRUG"
        },
        {
          "name": "3rd ARV agent",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 567,
      "start_date": "2015-06-29",
      "completion_date": "2019-03-13",
      "has_results": true,
      "last_update_posted_date": "2019-10-25",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 34,
      "location_summary": "Phoenix, Arizona • Beverly Hills, California • La Jolla, California + 26 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02469246"
    },
    {
      "nct_id": "NCT02121795",
      "title": "Switch Study to Evaluate F/TAF in HIV-1 Positive Participants Who Are Virologically Suppressed on Regimens Containing FTC/TDF",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV-1 Infection"
      ],
      "interventions": [
        {
          "name": "FTC/TDF",
          "type": "DRUG"
        },
        {
          "name": "F/TAF",
          "type": "DRUG"
        },
        {
          "name": "Allowed third antiretroviral agent",
          "type": "DRUG"
        },
        {
          "name": "FTC/TDF Placebo",
          "type": "DRUG"
        },
        {
          "name": "F/TAF Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 668,
      "start_date": "2014-05-06",
      "completion_date": "2019-03-01",
      "has_results": true,
      "last_update_posted_date": "2020-03-12",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 57,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 40 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Hayward",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02121795"
    },
    {
      "nct_id": "NCT00120393",
      "title": "Study of HIV Patients With Undetectable Viral Load and Abnormal Lipids Switching to Atazanavir/Ritonavir",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "atazanavir/ritonavir +2 NRTIs (immediate Switch Group)",
          "type": "DRUG"
        },
        {
          "name": "LPV/r +2 NRTIs (Delayed/optional Switch Group)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 192,
      "start_date": "2004-01",
      "completion_date": "2006-05",
      "has_results": false,
      "last_update_posted_date": "2010-02-05",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 12,
      "location_summary": "Phoenix, Arizona • Bakersfield, California • Los Angeles, California + 9 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00120393"
    },
    {
      "nct_id": "NCT02386098",
      "title": "Strategy-confirming Study of BMS-955176 to Treat HIV-1 Infected Treatment-experienced Adults",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "BMS-955176",
          "type": "DRUG"
        },
        {
          "name": "Atazanavir (ATV)",
          "type": "DRUG"
        },
        {
          "name": "Ritonavir (RTV)",
          "type": "DRUG"
        },
        {
          "name": "Dolutegravir (DTG)",
          "type": "DRUG"
        },
        {
          "name": "Tenofovir (TDF)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ViiV Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 86,
      "start_date": "2015-07-08",
      "completion_date": "2017-06-07",
      "has_results": true,
      "last_update_posted_date": "2018-08-20",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 16,
      "location_summary": "Beverly Hills, California • Los Angeles, California • Palm Springs, California + 13 more",
      "locations": [
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palm Springs",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02386098"
    },
    {
      "nct_id": "NCT02605954",
      "title": "Safety and Efficacy of Switching From Regimens of ABC/3TC + a 3rd Agent to E/C/F/TAF Fixed-Dose Combination (FDC) in Virologically-Suppressed HIV 1 Infected Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "HIV-1 Infection"
      ],
      "interventions": [
        {
          "name": "E/C/F/TAF",
          "type": "DRUG"
        },
        {
          "name": "ABC/3TC",
          "type": "DRUG"
        },
        {
          "name": "Third Antiretroviral Agent",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 275,
      "start_date": "2015-11-18",
      "completion_date": "2018-01-24",
      "has_results": true,
      "last_update_posted_date": "2018-11-14",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 12,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • Washington D.C., District of Columbia + 8 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02605954"
    },
    {
      "nct_id": "NCT01903031",
      "title": "Evaluating Pharmacokinetic Interactions With Vaginal Ring Contraceptives and ART",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HIV-1 Infection"
      ],
      "interventions": [
        {
          "name": "Nuvaring",
          "type": "DEVICE"
        },
        {
          "name": "EFV",
          "type": "DRUG"
        },
        {
          "name": "ATV/r",
          "type": "DRUG"
        },
        {
          "name": "TDF",
          "type": "DRUG"
        },
        {
          "name": "NRTIs",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "16 Years and older · Female only"
      },
      "enrollment_count": 84,
      "start_date": "2014-12-30",
      "completion_date": "2016-10-10",
      "has_results": true,
      "last_update_posted_date": "2018-06-06",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 10,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Aurora, Colorado + 6 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01903031"
    },
    {
      "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": "2026-10-06T17:23:02.508Z",
      "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": "NCT00440947",
      "title": "Induction/Simplification With Atazanavir + Ritonavir + Abacavir/Lamivudine Fixed-Dose Combination In HIV-1 Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Infection, Human Immunodeficiency Virus I",
        "HIV Infection"
      ],
      "interventions": [
        {
          "name": "Abacavir (ABC)/lamivudine (3TC) + atazanavir (ATV) + ritonavir (/r)",
          "type": "DRUG"
        },
        {
          "name": "Abacavir (ABC)/lamivudine (3TC) + atazanavir (ATV)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ViiV Healthcare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 515,
      "start_date": "2007-03",
      "completion_date": "2010-07",
      "has_results": true,
      "last_update_posted_date": "2012-03-22",
      "last_synced_at": "2026-10-06T17:23:02.508Z",
      "location_count": 62,
      "location_summary": "Phoenix, Arizona • Long Beach, California • Los Angeles, California + 43 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00440947"
    }
  ]
}