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Paricalcitol in Fabry Disease

Primary Purpose

Fabry Disease, Proteinuria

Status
Completed
Phase
Not Applicable
Locations
Italy
Study Type
Interventional
Intervention
Paricalcitol
Sponsored by
Federico II University
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for Fabry Disease

Eligibility Criteria

18 Years - 75 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  • genetically proven FD
  • stable dose of ERT for at least 12 months
  • stable dose of ACEi or ARB titrated to maximum tolerated dosage for at least 6 months
  • persistent proteinuria >0.50 g/24 h despite the use of ERT and ACEi/ARBs in 2 consecutive samples within 12 weeks

Exclusion Criteria:

  • steroid/immunosuppressive treatment or glomerular filtration rate change >30% in the past 3 months
  • PTH levels <20 pg/mL
  • serum phosphorus >5.0 mg/dL
  • serum calcium (adjusted for albumin) >10.0 mg/dL
  • active malignancy.

Sites / Locations

  • federico II university, department of nephrology

Arms of the Study

Arm 1

Arm Type

Experimental

Arm Label

Paricalcitol

Arm Description

In patients identified by the inclusion criteria, data will be collected at baseline , during administration of oral Paricalcitol (PCT) (after 1, 3 and 6 months), and three months after PCT withdrawal. PCT will administered at dosage of 1 mcg/day; this dosage was chosen as it is not associated with excessive decline of parathyroid hormone (PTH) levels in most patients

Outcomes

Primary Outcome Measures

Effect of paricalcitol on proteinuria reduction
Fourteen Fabry patients will be selected and studied in the first six months of add-on oral PCT (1 mcg/day) and, in order to verify the dependence of proteinuria reduction on PCT, three months after drug withdrawal.

Secondary Outcome Measures

Full Information

First Posted
March 14, 2014
Last Updated
March 17, 2014
Sponsor
Federico II University
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1. Study Identification

Unique Protocol Identification Number
NCT02090608
Brief Title
Paricalcitol in Fabry Disease
Study Type
Interventional

2. Study Status

Record Verification Date
January 2014
Overall Recruitment Status
Completed
Study Start Date
March 2012 (undefined)
Primary Completion Date
December 2013 (Actual)
Study Completion Date
December 2013 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Federico II University

4. Oversight

5. Study Description

Brief Summary
Proteinuria is the predominant risk factor for renal disease progression in Fabry disease (FD). When urine protein excretion is controlled to <0.50 g/24 hr, the rate loss of glomerular filtration rate (GFR) is not significantly different from 0. However, enzyme replacement therapy (ERT) alone does not decrease proteinuria and it has been recommended that patients receiving ERT also receive anti Renin-Angiotensin-System (RAS) therapy. Emerging evidences show that paricalcitol (PCT) reduces proteinuria in presence of intensified inhibition of RAS; however, there is no evidence in FD. The aim of this study is to evaluate the antiproteinuric effect of PCT in FD patients with proteinuria >0.50 g/24 hr persisting despite the ERT and anti-RAS therapy titrated to maximum tolerated dosage.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Fabry Disease, Proteinuria

7. Study Design

Primary Purpose
Treatment
Study Phase
Not Applicable
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
Non-Randomized
Enrollment
14 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Paricalcitol
Arm Type
Experimental
Arm Description
In patients identified by the inclusion criteria, data will be collected at baseline , during administration of oral Paricalcitol (PCT) (after 1, 3 and 6 months), and three months after PCT withdrawal. PCT will administered at dosage of 1 mcg/day; this dosage was chosen as it is not associated with excessive decline of parathyroid hormone (PTH) levels in most patients
Intervention Type
Drug
Intervention Name(s)
Paricalcitol
Intervention Description
Paricalcitol was administered at the dose of 1 mcg/die
Primary Outcome Measure Information:
Title
Effect of paricalcitol on proteinuria reduction
Description
Fourteen Fabry patients will be selected and studied in the first six months of add-on oral PCT (1 mcg/day) and, in order to verify the dependence of proteinuria reduction on PCT, three months after drug withdrawal.
Time Frame
6 months

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
75 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: genetically proven FD stable dose of ERT for at least 12 months stable dose of ACEi or ARB titrated to maximum tolerated dosage for at least 6 months persistent proteinuria >0.50 g/24 h despite the use of ERT and ACEi/ARBs in 2 consecutive samples within 12 weeks Exclusion Criteria: steroid/immunosuppressive treatment or glomerular filtration rate change >30% in the past 3 months PTH levels <20 pg/mL serum phosphorus >5.0 mg/dL serum calcium (adjusted for albumin) >10.0 mg/dL active malignancy.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
eleonora riccio, md
Organizational Affiliation
Federico II University
Official's Role
Principal Investigator
Facility Information:
Facility Name
federico II university, department of nephrology
City
Naples
ZIP/Postal Code
80129
Country
Italy

12. IPD Sharing Statement

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Paricalcitol in Fabry Disease

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