Treatment of Autonomous Hyperparathyroidism in Post Renal Transplant Recipients

Completed · Phase 3 · Has a placebo group

Conditions studied: Chronic Allograft Nephropathy, Chronic Kidney Disease, Chronic Renal Failure, Disordered Mineral Metabolism, End Stage Renal Disease, Hyperparathyroidism, Hypophosphatemia, Kidney Disease, Kidney Transplantation, Post Renal Transplantation

In brief

Hyperparathyroidism (HPT) is common in people with a kidney transplant. Patients with HPT often have high parathyroid hormone (PTH) levels and may have large parathyroid glands in the neck. Patients with HPT can develop bone disease (osteodystrophy). This bone disease can cause bone pain, fractures, and poor formation of red blood cells. Other problems from HPT may include increases in blood levels of calcium (hypercalcemia) and low blood levels of phosphorus (hypophosphatemia). The high calcium levels may cause calcium to deposit in body tissues. Calcium deposits can cause arthritis (joint pain and swelling), muscle inflammation, itching, gangrene (death of soft tissue), heart and lung problems or kidney transplant dysfunction (worsening of kidney transplant function). The purpose of this study is to evaluate the effects of cinacalcet (Sensipar/Mimpara) on high calcium levels in the blood in patients with HPT after a kidney transplant.

Key facts

Study ID

NCT00975000

Run by

Amgen

People needed

114

Starts

2009-12-03

Expected to finish

2013-04-16

Last updated by the study team

2018-10-17

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Received a kidney transplant ≥ 9 weeks at time of Screening and ≤ 24 months before first dose
• May be the first kidney transplant or a repeat kidney transplant.
• Subjects with a functional, stable kidney transplant, defined as MDRD estimated glomerular filtration rate (eGFR) ≥ 30 mL/min/1.73 m² (chromic kidney disease stage 3 or better) at Screening.
• Men or women ≥ 18 years at the start of Screening (ie, time of informed consent).
• Corrected total serum calcium > 10.5 mg/dL (2.63 mmol/L), defined as the mean of 2 values in Screening period.
• iPTH > 100 pg/mL (10.6 pmol/L), during the Screening period (obtained at either Screen 1 or Screen 2).

You may not qualify if…

• Received cinacalcet therapy post-transplant for more than 14 days cumulatively post-transplant. If cinacalcet therapy was received for a total of 14 days or less post-transplant, there must be a 4-week washout before subject is eligible for screening (Note: This does not exclude pre-transplant use of cinacalcet).
• Anticipated parathyroidectomy within 6 to12 months after Randomization.
• Ongoing therapy with bisphosphonates or use within 6 months prior to Screening.
• Ongoing use of 1,25-dihydroxyvitamin D3 (including other active vitamin D metabolites or analogues) or use within 30 days prior to Screening.
• Ongoing use of calcium supplements or use within 30 days prior to Screening.
• Ongoing use of phosphate binders (calcium or non-calcium containing) or use within 30 days prior to Screening.
• Ongoing use of a thiazide diuretic.
• Subjects with a history of seizures who had a seizure within the 3 months prior to Randomization, which required adjustments to the seizure medication.
• Acute Kidney Injury (AKI) or renal biopsy within 6 weeks prior to Screening, unless it is an institutional protocol-driven biopsy.

Where it is running

• Research Site — Tempe, Arizona, United States
• Research Site — San Francisco, California, United States
• Research Site — Aurora, Colorado, United States
• Research Site — Gainesville, Florida, United States
• Research Site — Atlanta, Georgia, United States
• Research Site — Chicago, Illinois, United States
• Research Site — Evanston, Illinois, United States
• Research Site — Springfield, Massachusetts, United States
• Research Site — Detroit, Michigan, United States
• Research Site — New York, New York, United States
• Research Site — Bethlehem, Pennsylvania, United States
• Research Site — Nashville, Tennessee, United States
• Research Site — Dallas, Texas, United States
• Research Site — Houston, Texas, United States
• Research Site — Camperdown, New South Wales, Australia
• Research Site — Westmead, New South Wales, Australia
• Research Site — Woodville South, South Australia, Australia
• Research Site — Parkville, Victoria, Australia
• Research Site — Vienna, Austria
• Research Site — Brussels, Belgium
• Research Site — Ghent, Belgium
• Research Site — Leuven, Belgium
• Research Site — Calgary, Alberta, Canada
• Research Site — Vancouver, British Columbia, Canada
• Research Site — Phoenix, Arizona, United States

Full record on ClinicalTrials.gov

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