{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Paricalcitol+%28Zemplar%29",
    "query": {
      "intervention": "Paricalcitol (Zemplar)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 59,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Paricalcitol+%28Zemplar%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-23T11:18:38.798Z",
  "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": "NCT00656032",
      "title": "Vitamin D, Insulin Resistance and Inflammation in ESRD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "paricalcitol",
          "type": "OTHER"
        },
        {
          "name": "cinacalcet",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2008-04",
      "completion_date": "2010-01",
      "has_results": false,
      "last_update_posted_date": "2012-01-11",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00656032"
    },
    {
      "nct_id": "NCT00048516",
      "title": "Safety and Efficacy of Zemplar Capsule in Reducing Serum iPTH Levels in Chronic Kidney Disease Subjects (Daily Dosing)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Renal Insufficiency, Chronic"
      ],
      "interventions": [
        {
          "name": "paricalcitol capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abbott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 68,
      "start_date": "2002-02",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2006-08-02",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 16,
      "location_summary": "Los Angeles, California • Riverside, California • Simi Valley, California + 12 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "Simi Valley",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00048516"
    },
    {
      "nct_id": "NCT00294866",
      "title": "Effect of Paricalcitol on Markers of Inflammation in Hemodialysis Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Kidney Failure"
      ],
      "interventions": [
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Fresenius Medical Care North America",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 64,
      "start_date": "2006-03",
      "completion_date": "2008-01",
      "has_results": false,
      "last_update_posted_date": "2010-04-08",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 6,
      "location_summary": "Evergreen Park, Illinois • Kalamazoo, Michigan • West Orange, New Jersey + 3 more",
      "locations": [
        {
          "city": "Evergreen Park",
          "state": "Illinois"
        },
        {
          "city": "Kalamazoo",
          "state": "Michigan"
        },
        {
          "city": "West Orange",
          "state": "New Jersey"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00294866"
    },
    {
      "nct_id": "NCT00454350",
      "title": "A Phase 4 Pharmacokinetic Study of Hectorol Injection and Zemplar Injection in CKD Subjects on Hemodialysis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Secondary Hyperparathyroidism"
      ],
      "interventions": [
        {
          "name": "Hectorol (doxercalciferol injection)",
          "type": "DRUG"
        },
        {
          "name": "Zemplar (Paricalcitol injection)",
          "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": 12,
      "start_date": "2007-02",
      "completion_date": "2007-07",
      "has_results": false,
      "last_update_posted_date": "2015-05-05",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00454350"
    },
    {
      "nct_id": "NCT03519308",
      "title": "A Pilot Study of Perioperative Nivolumab and Paricalcitol to Target the Microenvironment in Resectable Pancreatic Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Pancreatic Cancer"
      ],
      "interventions": [
        {
          "name": "Nivolumab",
          "type": "DRUG"
        },
        {
          "name": "Nab-Paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "Gemcitabine",
          "type": "DRUG"
        },
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2020-07-29",
      "completion_date": "2022-04-18",
      "has_results": true,
      "last_update_posted_date": "2024-03-15",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03519308"
    },
    {
      "nct_id": "NCT01003275",
      "title": "Metabolic Effects of Paricalcitol",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2009-10",
      "completion_date": "2011-11",
      "has_results": true,
      "last_update_posted_date": "2014-04-28",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01003275"
    },
    {
      "nct_id": "NCT00686751",
      "title": "Immune Effects of Vitamin D in Hemodialysis Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "End Stage Renal Disease",
        "Hemodialysis",
        "Inflammatory Response",
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "paricalcitol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Renal Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 20,
      "start_date": "2004-12",
      "completion_date": "2007-09",
      "has_results": false,
      "last_update_posted_date": "2009-05-13",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 3,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00686751"
    },
    {
      "nct_id": "NCT00257920",
      "title": "A Study of Zemplar® Injection and Hectorol® Injection on Intestinal Absorption of Calcium in Chronic Kidney Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chronic Kidney Disease, Stage 5",
        "Secondary Hyperparathyroidism"
      ],
      "interventions": [
        {
          "name": "Zemplar® injection",
          "type": "DRUG"
        },
        {
          "name": "Hectorol® injection",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abbott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "20 Years and older"
      },
      "enrollment_count": 41,
      "start_date": "2006-06",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2009-12-24",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 2,
      "location_summary": "Bellevue, Nebraska • Omaha, Nebraska",
      "locations": [
        {
          "city": "Bellevue",
          "state": "Nebraska"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00257920"
    },
    {
      "nct_id": "NCT03883919",
      "title": "Liposomal Irinotecan Plus 5-FU / LV Combined With Paricalcitol in Patients With Advanced Pancreatic Cancer Progressed on Gemcitabine-based Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pancreatic Cancer",
        "Pancreas Cancer",
        "Cancer of the Pancreas"
      ],
      "interventions": [
        {
          "name": "5-FU",
          "type": "DRUG"
        },
        {
          "name": "Leucovorin",
          "type": "DRUG"
        },
        {
          "name": "Liposomal Irinotecan",
          "type": "DRUG"
        },
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Serum and plasma blood samples",
          "type": "PROCEDURE"
        },
        {
          "name": "Tumor biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "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": 20,
      "start_date": "2019-07-11",
      "completion_date": "2022-07-02",
      "has_results": false,
      "last_update_posted_date": "2022-10-05",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03883919"
    },
    {
      "nct_id": "NCT02018133",
      "title": "Identification of Markers for Determining the Efficacy of Vitamin D Receptor Activator Therapy in Stage 3/4 CKD Patients",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "CKD Stage 3/4"
      ],
      "interventions": [
        {
          "name": "Vitamin D 2mg daily for 2 weeks oral paricalcitol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "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": 8,
      "start_date": "2009-12",
      "completion_date": "2012-06",
      "has_results": false,
      "last_update_posted_date": "2020-08-17",
      "last_synced_at": "2026-09-23T11:18:38.798Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02018133"
    }
  ]
}