{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Vifor+Pharma%2C+Inc.",
    "query": {
      "sponsor": "Vifor Pharma, Inc."
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 13,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Vifor+Pharma%2C+Inc.&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T13:15:47.852Z",
  "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": "NCT01810939",
      "title": "A Two-Part, Single-Blind, Phase 3 Study Evaluating the Efficacy and Safety of Patiromer for the Treatment of Hyperkalemia (OPAL)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chronic Kidney Disease (CKD)",
        "Hyperkalemia (HK)"
      ],
      "interventions": [
        {
          "name": "Patiromer",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Relypsa, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 243,
      "start_date": "2013-02",
      "completion_date": "2013-08",
      "has_results": true,
      "last_update_posted_date": "2021-06-03",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 14,
      "location_summary": "Azusa, California • Los Angeles, California • Sacramento, California + 11 more",
      "locations": [
        {
          "city": "Azusa",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Santa Barbara",
          "state": "California"
        },
        {
          "city": "Ventura",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01810939"
    },
    {
      "nct_id": "NCT04938635",
      "title": "Efficacy and Safety Study of Multiple Doses of VIT-2763 in Adults With Transfusion-dependent Beta-thalassemia",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Beta-Thalassemia"
      ],
      "interventions": [
        {
          "name": "VIT-2763 60 mg QD",
          "type": "DRUG"
        },
        {
          "name": "VIT-2763 60 mg BID",
          "type": "DRUG"
        },
        {
          "name": "VIT-2763 120 mg BID",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vifor (International) Inc.",
      "sponsor_class": "INDUSTRY",
      "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": "2021-09-20",
      "completion_date": "2023-07",
      "has_results": false,
      "last_update_posted_date": "2022-11-10",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 1,
      "location_summary": "Whittier, California",
      "locations": [
        {
          "city": "Whittier",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04938635"
    },
    {
      "nct_id": "NCT03087058",
      "title": "Pharmacodynamic & Safety of Patiromer in Children & Adolescents (2-<18 Yrs) With Chronic Kidney Disease and Hyperkalemia",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperkalemia"
      ],
      "interventions": [
        {
          "name": "Patiromer",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vifor Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "2 Years to 17 Years"
      },
      "enrollment_count": 23,
      "start_date": "2017-07-07",
      "completion_date": "2021-04-30",
      "has_results": true,
      "last_update_posted_date": "2022-10-19",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 10,
      "location_summary": "Palo Alto, California • Kansas City, Kansas • Baltimore, Maryland + 7 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03087058"
    },
    {
      "nct_id": "NCT02694744",
      "title": "Patiromer With or Without Food for the Treatment of Hyperkalemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hyperkalemia"
      ],
      "interventions": [
        {
          "name": "patiromer",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Relypsa, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 114,
      "start_date": "2016-02",
      "completion_date": "2016-08",
      "has_results": true,
      "last_update_posted_date": "2021-05-12",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 29,
      "location_summary": "Fountain Valley, California • Huntington Beach, California • Palm Springs, California + 21 more",
      "locations": [
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Huntington Beach",
          "state": "California"
        },
        {
          "city": "Palm Springs",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "San Dimas",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02694744"
    },
    {
      "nct_id": "NCT02033317",
      "title": "An Open-Label, Multiple Dose Study to Evaluate the Pharmacology, Safety, and Tolerability of Patiromer in Participants on Hemodialysis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperkalemia"
      ],
      "interventions": [
        {
          "name": "patiromer",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Relypsa, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 6,
      "start_date": "2008-08",
      "completion_date": "2008-12",
      "has_results": true,
      "last_update_posted_date": "2021-05-12",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 2,
      "location_summary": "Orlando, Florida • Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02033317"
    },
    {
      "nct_id": "NCT04864795",
      "title": "Cardiovascular and Renal Treatment in Heart Failure Patients With Hyperkalaemia or at High Risk of Hyperkalaemia",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Heart Failure",
        "Hyperkalemia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Vifor (International) Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2636,
      "start_date": "2021-04-19",
      "completion_date": "2024-08-30",
      "has_results": false,
      "last_update_posted_date": "2024-11-04",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 52,
      "location_summary": "Little Rock, Arkansas • La Jolla, California • Northridge, California + 46 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Northridge",
          "state": "California"
        },
        {
          "city": "Bridgeport",
          "state": "Connecticut"
        },
        {
          "city": "Boynton Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04864795"
    },
    {
      "nct_id": "NCT03071263",
      "title": "Spironolactone With Patiromer in the Treatment of Resistant Hypertension in Chronic Kidney Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperkalemia",
        "Resistant Hypertension"
      ],
      "interventions": [
        {
          "name": "Patiromer",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Spironolactone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Relypsa, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 295,
      "start_date": "2017-01-23",
      "completion_date": "2018-11-27",
      "has_results": true,
      "last_update_posted_date": "2021-05-12",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 3,
      "location_summary": "Hollywood, Florida • Miami Lakes, Florida • Chicago, Illinois",
      "locations": [
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Miami Lakes",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03071263"
    },
    {
      "nct_id": "NCT03888066",
      "title": "Patiromer for the Management of Hyperkalemia in Subjects Receiving RAASi Medications for the Treatment of Heart Failure (DIAMOND)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hyperkalemia"
      ],
      "interventions": [
        {
          "name": "Patiromer",
          "type": "DRUG"
        },
        {
          "name": "Placebos",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vifor Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1195,
      "start_date": "2019-04-24",
      "completion_date": "2021-09-02",
      "has_results": true,
      "last_update_posted_date": "2023-02-24",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 133,
      "location_summary": "Alexander City, Alabama • Huntsville, Alabama • Phoenix, Arizona + 110 more",
      "locations": [
        {
          "city": "Alexander City",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03888066"
    },
    {
      "nct_id": "NCT05766839",
      "title": "Effect of Patiromer in Children Under 12 Years of Age With High Blood Potassium Levels",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperkalemia"
      ],
      "interventions": [
        {
          "name": "Patiromer",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vifor Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "0 Years",
        "maximum_age": "11 Years",
        "sex": "ALL",
        "summary": "0 Years to 11 Years"
      },
      "enrollment_count": 36,
      "start_date": "2025-04-06",
      "completion_date": "2030-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 13,
      "location_summary": "Aurora, Colorado • Jacksonville, Florida • Miami, Florida + 10 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05766839"
    },
    {
      "nct_id": "NCT00994318",
      "title": "Ferric Carboxymaltose (FCM) Assessment in Subjects With Iron Deficiency Anaemia and Non-dialysis-dependent Chronic Kidney Disease (NDD-CKD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Iron Deficiency Anaemia",
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "FCM (Ferric carboxymaltose) high ferritin target",
          "type": "DRUG"
        },
        {
          "name": "FCM (Ferric carboxymaltose) low ferritin target",
          "type": "DRUG"
        },
        {
          "name": "Oral Iron (Ferrous sulphate)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vifor Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 626,
      "start_date": "2009-12",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2014-05-20",
      "last_synced_at": "2026-10-05T13:15:47.852Z",
      "location_count": 1,
      "location_summary": "Wilmington, North Carolina",
      "locations": [
        {
          "city": "Wilmington",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00994318"
    }
  ]
}