A Long-Term Safety Extension Trial of Ferric Citrate in Patients With End-Stage Renal Disease (ESRD) on Dialysis

NCT ID: NCT01554982

Last Updated: 2016-07-13

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

168 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-08-31

Study Completion Date

2014-08-31

Brief Summary

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A long-term safety study of ferric citrate (KRX-0502) in renal failure patients who have completed study KRX-0502-304. Only patients who participated in the KRX-0502-304 trial may participate in this trial.

Detailed Description

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This study was an open-label, 48-week safety extension of Study KRX-0502-304 (Study 304), to evaluate the safety of long-term use of KRX-0502 in subjects with ESRD for up to 2 years of cumulative exposure. Subjects who completed the Safety Assessment Period (SAP) and, if eligible, the Efficacy Assessment Period (EAP) of Study 304, independent of their assigned treatment arm in the SAP or EAP of Study 304, were eligible for participation in this long-term safety extension study. No new subjects were permitted to enter this study.

Conditions

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End Stage Renal Disease Kidney Failure Renal Failure Hyperphosphatemia ESRD

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Ferric Citrate

Open label extension of those completing study KRX-0304

Group Type OTHER

ferric citrate

Intervention Type DRUG

Dose based on monthly serum phosphorus levels with goal of 3.5-5.5 mg/dL for all patients.

Interventions

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ferric citrate

Dose based on monthly serum phosphorus levels with goal of 3.5-5.5 mg/dL for all patients.

Intervention Type DRUG

Other Intervention Names

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Auryxia KRX-0502

Eligibility Criteria

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Inclusion Criteria

1. Males or non-pregnant, non-breast-feeding females who participated in the Safety Assessment Period (SAP), and if eligible, the Efficacy Assessment Period (EAP) of Study KRX-0502-304
2. Willing and able to give informed consent

Exclusion Criteria

1. Subjects on KRX-0502 (ferric citrate) in KRX-0502-304 who were treatment failures in first period
2. Any subject in Study KRX-0502-304 SAP who early terminated from the trial
3. Any subject who participated in Study KRX-0502-304 but declined EAP
4. Actively symptomatic gastrointestinal bleeding or inflammatory bowel disease
5. History of malignancy in the last five years
6. Previous intolerance to KRX-0502 (ferric citrate)
7. Intolerance to oral iron-containing products
8. Absolute requirement for oral iron therapy
9. Absolute requirement for Vitamin C (multivitamins \[Nephrocaps, Renaphro, etc.\] allowed)
10. Absolute requirement for calcium-, magnesium-, or aluminum-containing drugs with meals
11. Inability to tolerate oral drug intake
12. Any other medical condition that rendered the subject unable to or unlikely to complete the trial or that would interfere with optimal participation in the trial or produce significant risk to the subject
13. Inability to cooperate with study personnel or history of noncompliance
14. Unsuitable for this trial per Principal Investigator's (PI) clinical judgment.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Keryx Biopharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Julia B Lewis, MD

Role: STUDY_CHAIR

Collaborative Study Group

Locations

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Veterans Administration Greater Los Angeles Health Care System

Los Angeles, California, United States

Site Status

University of Colorado

Aurora, Colorado, United States

Site Status

Western Nephrology and Metabolic Bone Disease, PC

Westminster, Colorado, United States

Site Status

Kidney Care Associates, LLC

Augusta, Georgia, United States

Site Status

Circle Medical Management

Chicago, Illinois, United States

Site Status

DaVita Dialysis Unit 494/Nephrology Specialists, PC

Michigan City, Indiana, United States

Site Status

Dept of Internal Medicine, Nephrology & Hypertension

New Orleans, Louisiana, United States

Site Status

Washington Nephrology Associates

Bethesda, Maryland, United States

Site Status

Tufts Medical Center

Boston, Massachusetts, United States

Site Status

Western New England Renal & Transplant Associates, PC

Springfield, Massachusetts, United States

Site Status

Nephrology Hypertension Clinic, PC

Dearborn, Michigan, United States

Site Status

Henry Ford Hospital

Detroit, Michigan, United States

Site Status

Rochester Hills DaVita Dialysis

Pontiac, Michigan, United States

Site Status

Asheville Kidney Center

Asheville, North Carolina, United States

Site Status

Metrolina Nephrology Associates, PA

Charlotte, North Carolina, United States

Site Status

Duke University Dept of Medicine/Nephrology

Durham, North Carolina, United States

Site Status

Piedmont Dialysis Center

Winston-Salem, North Carolina, United States

Site Status

Clinical Research Limited

Canton, Ohio, United States

Site Status

University of Cincinnati

Cincinnati, Ohio, United States

Site Status

University of Pennsylvania Health System

Philadelphia, Pennsylvania, United States

Site Status

Southeast Renal Research Institute Nephrology Associates

Chattanooga, Tennessee, United States

Site Status

Nephrology Associates, PC

Nashville, Tennessee, United States

Site Status

Vanderbilt University Medical Center

Nashville, Tennessee, United States

Site Status

UT Southwestern Medical Center at Dallas

Dallas, Texas, United States

Site Status

Kidney Associates, PLLC

Houston, Texas, United States

Site Status

Med Center Dialysis

Houston, Texas, United States

Site Status

Kidney Specialists of North Houston, PLLC

Houston, Texas, United States

Site Status

University of Vermont/ Fletcher Allen Health Care: Renal Services

Burlington, Vermont, United States

Site Status

Nephrology Clinical Research Center

Charlottesville, Virginia, United States

Site Status

Clinical Research & Consulting Center, LLC

Fairfax, Virginia, United States

Site Status

Nephrology Associates of Northern Virginia, Inc.

Fairfax, Virginia, United States

Site Status

Butler Farms Dialysis

Hampton, Virginia, United States

Site Status

Medical College of Wisconsin

Milwaukee, Wisconsin, United States

Site Status

RCMI-Clinical Research Center

Rio Piedras, PR, Puerto Rico

Site Status

Countries

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United States Puerto Rico

Other Identifiers

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KRX-0502-307

Identifier Type: -

Identifier Source: org_study_id

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