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Calcimimetics in Hypophosphatemic Rickets

NCT00844740 · Status: WITHDRAWN · Phase: NA · Type: INTERVENTIONAL

Last updated 2020-12-17

No results posted yet for this study

Summary

Currently, large oral doses of phosphate and 1,25(OH)2D (calcitriol) are the standard treatment of patients with familial hypophosphatemic rickets (XLH). While this therapy is effective in healing the rickets, it is often limited by development of complications due to the high dose of medications required to achieve cure. Among them are the development of calcifications in the kidneys and secondary hyperparathyroidism (HPT) which in some patients may cause complications like high blood calcium level, high blood pressure and damage to the kidney. A drug to treat secondary hyperparathyroidism was just developed. In a short term study we found that it might help the treatment of XLH, by allowing the use of lower doses of the both phosphate and calcitriol. In the present study we will learn if indeed the addition of this new medicine (Cinacalcet) to the long-term treatment will allow the use of lower doses of both phosphate and calcitriol and consequently lower the risk of complications.

Conditions

  • Familial Hypophosphatemic Rickets

Interventions

DRUG

Cinacalcet

Stable patients with XLH already treated with Phosphate and calcitriol will add Cinacalcet to their treatment regimen. Sequential monitoring of blood nand urine biochemical variables will follow, based on which adjustments to the doses of the 3 medications will be done.

Sponsors & Collaborators

  • Children's Mercy Hospital Kansas City

    lead OTHER

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
5 Years
Max Age
21 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2009-03-01
Primary Completion
2012-03-01
Completion
2012-03-01

Countries

  • United States

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT00844740 on ClinicalTrials.gov