- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00415584
Cinacalcet to Treat Hypercalcemia in Renal Transplant Recipients
Cinacalcet for Treatment of Persistent Secondary Hyperparathyroidism in Renal Transplant Recipients: Effect on Renal Function, Serum Calcium and Bone Histomorphometry
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Secondary Hyperparathyroidism in the renal transplant recipient can cause abnormal bone and mineral metabolism, resulting in hypercalcemia that is detrimental to renal function, causing renal dysfunction and calcinosis. These patients often require parathyroidectomy to correct the hypercalcemia. Surgery is not without significant risk to the patient. Risks include vocal cord paralysis, protracted hypocalcemia, cardiac arrhythmias, muscle cramps. In addition, parathyroidectomy has been associated with subsequent renal impairment.
Cinacalcet is a calcimimetic agent that is very effective in the treatment of secondary hyperparathyroidism in patients with renal failure as well as in hypercalcemia of parathyroid cancer. There have been reports of short term Cinacalcet use in renal transplant recipients. Serum calcium was improved in these patients.
However, little is known about the effect of cinacalcet on bone activity and turnover. It is not known whether Cinacalcet causes low turnover bone activity with adynamic bone disease. It is known that low turnover bone disease in renal patients can by itself cause hypercalcemia as the bone becomes static and unable to respond to everyday calcium loads.
We have shown that adynamic bone can develop in renal transplant recipients under a variety of conditions. It is not known what effect, if any, cinacalcet has on the bone activity of renal transplant recipients with persistent secondary hyperparathyroidism.
The purpose of the study is to determine the effect of Cinacalcet on serum calcium, renal function and bone histology in renal transplant recipients.
This is a prospective, open-label study. Stable adult renal transplant recipients who are at least 3 months post renal transplant, are hypercalcemic and have persistent hyperparathyroidism with inappropriately elevated Parathyroid hormone will be eligible.
Protocol procedures will include baseline and 6 month measurements of bone mineral density, bone biochemical parameters, glomerular filtration rate, anterior iliac crest bone biopsy. Subjects will start cinacalcet after the first biopsy. The medication will be titrated to normalize serum calcium. Medication will be supplied by the study. Serum electrolytes will be monitored as indicated.
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
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New York
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Bronx, New York, United States, 10467
- Montefiore Medical Center
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- renal transplant recipient at least 3 months post transplant
- hypercalcemia
- hyperparathyroidism
Exclusion Criteria:
- allergic to cinacalcet, tetracycline.
- pregnancy
- on medication that utilize same liver system as cinacalcet Hcl
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Experimental: Cinacalcet HCl
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
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normalization of serum calcium
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Secondary Outcome Measures
Outcome Measure |
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changes in renal function
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changes in bone mineral density
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changes in bone turnover
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Maria Coco, MD, MS, Montefiore Medical Center
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Pathologic Processes
- Metabolic Diseases
- Neoplasms
- Endocrine System Diseases
- Parathyroid Diseases
- Neoplastic Processes
- Calcium Metabolism Disorders
- Water-Electrolyte Imbalance
- Hyperparathyroidism
- Neoplasm Metastasis
- Hyperparathyroidism, Secondary
- Hypercalcemia
- Physiological Effects of Drugs
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Hormone Antagonists
- Calcium-Regulating Hormones and Agents
- Calcimimetic Agents
- Cinacalcet
Other Study ID Numbers
- 05-09-244
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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