{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hyperphosphatemia+in+Chronic+Kidney+Disease",
    "query": {
      "condition": "Hyperphosphatemia in Chronic Kidney Disease"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 37,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Hyperphosphatemia+in+Chronic+Kidney+Disease&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T06:32:42.115Z",
  "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": "NCT01191255",
      "title": "A 58-Week Safety and Efficacy Trial of Ferric Citrate in Patients With ESRD on Dialysis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hyperphosphatemia",
        "Kidney Failure"
      ],
      "interventions": [
        {
          "name": "ferric citrate, ca acetate, sevelamer carbonate, placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Keryx Biopharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 441,
      "start_date": "2010-10",
      "completion_date": "2013-02",
      "has_results": true,
      "last_update_posted_date": "2014-12-10",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 52,
      "location_summary": "Tempe, Arizona • Los Angeles, California • Riverside, California + 45 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "Whittier",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01191255"
    },
    {
      "nct_id": "NCT04523727",
      "title": "Study to Evaluate the Safety and Tolerability of Ferric Citrate in Children With Hyperphosphatemia Related to Chronic Kidney Disease",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hyperphosphatemia Related to Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "ferric citrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Keryx Biopharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "16 Years",
        "sex": "ALL",
        "summary": "6 Years to 16 Years"
      },
      "enrollment_count": 45,
      "start_date": "2022-06-16",
      "completion_date": "2027-10",
      "has_results": false,
      "last_update_posted_date": "2026-06-22",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 14,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • San Francisco, California + 11 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04523727"
    },
    {
      "nct_id": "NCT00316472",
      "title": "The Effect of Oral Niacinamide on Serum Phosphorus Levels in Hemodialysis Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hyperphosphatemia"
      ],
      "interventions": [
        {
          "name": "Niacinamide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 40,
      "start_date": "2006-04",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2009-01-16",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00316472"
    },
    {
      "nct_id": "NCT00853242",
      "title": "Randomized Study Comparing Genz-644470, Placebo, and Sevelamer Carbonate in Chronic Kidney Disease Patients on Hemodialysis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kidney Failure, Chronic"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Genz-644470",
          "type": "DRUG"
        },
        {
          "name": "Sevelamer carbonate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Genzyme, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 349,
      "start_date": "2009-02",
      "completion_date": "2009-08",
      "has_results": true,
      "last_update_posted_date": "2015-05-01",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 52,
      "location_summary": "Alexander City, Alabama • Birmingham, Alabama • Hot Springs, Arkansas + 49 more",
      "locations": [
        {
          "city": "Alexander City",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00853242"
    },
    {
      "nct_id": "NCT01074125",
      "title": "A 4-Week Dose-Ranging and Efficacy Trial of KRX-0502 (Ferric Citrate) in Patients With End-Stage Renal Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hyperphosphatemia",
        "End-Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "ferric citrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Keryx Biopharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 154,
      "start_date": "2010-05",
      "completion_date": "2010-11",
      "has_results": true,
      "last_update_posted_date": "2014-12-04",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 15,
      "location_summary": "Westminster, Colorado • Pembroke Pines, Florida • Augusta, Georgia + 10 more",
      "locations": [
        {
          "city": "Westminster",
          "state": "Colorado"
        },
        {
          "city": "Pembroke Pines",
          "state": "Florida"
        },
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Springfield",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01074125"
    },
    {
      "nct_id": "NCT00358046",
      "title": "Efficacy and Tolerability of ILY101 in Dialysis Patients With Hyperphosphatemia",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kidney Diseases",
        "Renal Insufficiency"
      ],
      "interventions": [
        {
          "name": "ILY101",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ilypsa",
      "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": 120,
      "start_date": "2006-06",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2007-02-07",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 18,
      "location_summary": "Mobile, Alabama • Mountain View, California • Riverside, California + 15 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mountain View",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Thornton",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00358046"
    },
    {
      "nct_id": "NCT00660530",
      "title": "Chewed vs. Crushed Lanthanum Carbonate in Hemodialysis Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperphosphatemia",
        "Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Lanthanum Carbonate Chewable Product",
          "type": "DRUG"
        },
        {
          "name": "Lanthanum carbonate crushed powder",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Illinois at Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2008-01",
      "completion_date": "2009-11",
      "has_results": true,
      "last_update_posted_date": "2020-11-03",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00660530"
    },
    {
      "nct_id": "NCT00358722",
      "title": "An Evaluation of the Long-term Safety of Magnesium Iron Hydroxycarbonate",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Kidney Failure"
      ],
      "interventions": [
        {
          "name": "Fermagate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ineos Healthcare Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2006-07",
      "completion_date": "2008-06",
      "has_results": false,
      "last_update_posted_date": "2009-08-10",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 4,
      "location_summary": "Pine Bluff, Arkansas • Stuttgart, Arkansas • Charlotte, North Carolina",
      "locations": [
        {
          "city": "Pine Bluff",
          "state": "Arkansas"
        },
        {
          "city": "Stuttgart",
          "state": "Arkansas"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Charlotte",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00358722"
    },
    {
      "nct_id": "NCT00834301",
      "title": "An Open Label Trial to Evaluate the Effects of a Novel Renal Multivitamin on Inflammation and Other Biomarkers in Endstage Renal Disease Patients",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperphosphatemia",
        "Inflammation",
        "Renal Disease"
      ],
      "interventions": [
        {
          "name": "Oral Multivitamin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Nephrian",
      "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": 25,
      "start_date": "2009-01",
      "completion_date": "2009-09",
      "has_results": false,
      "last_update_posted_date": "2009-02-03",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 1,
      "location_summary": "Simi Valley, California",
      "locations": [
        {
          "city": "Simi Valley",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00834301"
    },
    {
      "nct_id": "NCT02688764",
      "title": "A Study to Investigate the Safety and Efficacy of PA21 (Velphoro®) and Calcium Acetate (Phoslyra®) in Paediatric and Adolescent Chronic Kidney Disease (CKD) Patients With Hyperphosphataemia",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hyperphosphatemia"
      ],
      "interventions": [
        {
          "name": "PA21 (Velphoro®)",
          "type": "DRUG"
        },
        {
          "name": "Calcium Acetate (Phoslyra®)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vifor Fresenius Medical Care Renal Pharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "Up to 18 Years"
      },
      "enrollment_count": 85,
      "start_date": "2016-05-26",
      "completion_date": "2019-02-21",
      "has_results": true,
      "last_update_posted_date": "2019-09-10",
      "last_synced_at": "2026-09-30T06:32:42.115Z",
      "location_count": 22,
      "location_summary": "Birmingham, Alabama • Washington D.C., District of Columbia • Miami, Florida + 17 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02688764"
    }
  ]
}