A Study of Renal Function in Treatment-naïve, Young Male Patients With Fabry Disease

This study is currently recruiting participants. (see Contacts and Locations)
Verified January 2015 by Sanofi
Information provided by (Responsible Party):
Sanofi ( Genzyme, a Sanofi Company )
ClinicalTrials.gov Identifier:
First received: April 11, 2013
Last updated: January 23, 2015
Last verified: January 2015

No investigational drug will be administered in this study for the treatment of Fabry disease.

This will be a multicenter, multinational, non-treatment, cross-sectional study of young male patients with Fabry disease who have not yet initiated interventional treatment for this disease. The study will consist of a screening visit(s), a clinical investigation visit(s), and a follow-up phone contact.

The objectives of the study are:

  • To document renal function and other Fabry disease manifestations across age in treatment-naïve, young male patients with Fabry disease.
  • To provide a reference group for comparison with interventional clinical trials of Fabry disease.

The duration of each patient's participation in the study, inclusive of the screening visit and follow-up phone contact, will be approximately 12 weeks.

Condition Intervention
Fabry Disease
Drug: Iohexol

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: A Cross-sectional Study of Renal Function in Treatment-naïve, Young Male Patients With Fabry Disease

Resource links provided by NLM:

Further study details as provided by Sanofi:

Primary Outcome Measures:
  • Glomerular Filtration Rate Estimated from Serum Creatinine (eGFR) [ Time Frame: Day 1 to Week 8 ] [ Designated as safety issue: No ]
    Tests are performed only for patients who are not on chronic dialysis and/or have not received a kidney transplant.

  • Glomerular Filtration Rate by Plasma Iohexol Clearance (iGFR) [ Time Frame: Day 1 to Week 8 ] [ Designated as safety issue: No ]
    Assessment of iGFR will NOT be performed if a patient is on chronic dialysis, has had a kidney transplant, or has a screening eGFR <30 mL/min/1.73 m^2 or presents any contraindication mentioned in the labeling of iohexol (Omnipaque™ 300).

  • Protein Excretion Assessed from Three First-Morning Urine Voids [ Time Frame: Day 1 to Week 12 ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Cardiovascular Function [ Time Frame: Day 1 to Week 8 ] [ Designated as safety issue: No ]
    Assessed by electrocardiogram (ECG) and echocardiography

Estimated Enrollment: 100
Study Start Date: May 2013
Estimated Study Completion Date: August 2016
Estimated Primary Completion Date: August 2016 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Glomerular Filtration Rate by Plasma Iohexol Clearance (iGFR)
Evaluations of renal and cardiac function
Drug: Iohexol
Evaluations of renal and cardiac function are standard-of-care in young patients with Fabry disease. This study uses the more precise iGFR measurement of renal function. No investigational drug will be administered in this study for the treatment of Fabry disease.

Detailed Description:

Patients who meet all eligibility criteria based on screening assessments will be scheduled to return to the clinic for assessments of renal function and other disease-related parameters, which may be scheduled over one or more clinical investigation visits. The clinical investigation visit(s) will be scheduled such that renal and cardiac assessments occur after the required medication washout (see exclusion criterion); other procedures may be performed either before or after the medication washout, at the discretion of the investigator.

Up to 100 patients will be enrolled in the study, including a minimum of 15 patients in each of the following age groups (based on age at screening): 5 to 11 years, 12 to 17 years, and 18 to 25 years.

All patients will be encouraged to enroll in the Fabry Registry (NCT00196742) for continued follow-up after completion of the study.


Ages Eligible for Study:   5 Years to 25 Years
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • The patient and/or their parent/legal guardian is willing and able to provide signed informed consent. If the patient is below the age of consent per local guidelines, he is willing to provide assent, if deemed able to do so.
  • The patient must have a confirmed diagnosis of Fabry disease as documented by leukocyte α-galactosidase A (αGAL) of <4 nmol/hr/mg leukocyte (preferred assay; results from a central laboratory). If the leukocyte αGAL activity assay is difficult to obtain, the patient may be enrolled based on documented plasma αGAL <1.5 nmol/hr/mL (results from a central laboratory), with the agreement of the Genzyme Medical Monitor.

Exclusion Criteria:

  • Patient has received prior treatment with enzyme replacement therapy (ERT) or oral pharmacological chaperone therapy for Fabry disease.
  • Patient has received an investigational drug within 30 days of the screening visit.
  • Patient is receiving any of the following medications and is clinically unable or unwilling to temporarily discontinue treatment with these medications for the indicated washout period prior to the renal function assessments until completion of these assessments:

    • Angiotensin converting enzyme inhibitors or angiotensin receptor blockers (6 week washout);
    • Non-steroidal anti-inflammatory drugs (3 day washout).
    • NOTE: Patients who are on chronic dialysis or have had a kidney transplant will not be required to discontinue the above medications because renal function assessments will not be performed in these patients.
  • Patient has any contraindication mentioned in the labeling of iohexol. NOTE: patients with an eGFR <30 mL/min/1.73m^2 and patients who are on chronic dialysis or have had a kidney transplant may be enrolled irrespective of any contraindication to iohexol because iGFR will not be measured in these patients.
  • Patient has any medical condition or extenuating circumstance which, in the opinion of the Investigator, could interfere with the patient's ability to complete all study procedures, or with the interpretation of study results (e.g., diabetes mellitus).
  • The patient and/or their parent or legal guardian, in the opinion of the Investigator, is unable to adhere to the requirements of the study.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01839526

Contact: For site information, send an email with site number to Contact-Us@sanofi.com
Contact: Medical Information 617-252-7832 medinfo@genzyme.com

United States, Georgia
Investigational Site Number 840006 Recruiting
Decatur, Georgia, United States, 30033
United States, Ohio
Investigational Site Number 840003 Recruiting
Cincinnati, Ohio, United States, 45229-3039
United States, Virginia
Investigational Site Number 840002 Recruiting
Fairfax, Virginia, United States, 22030
United States, Wisconsin
Investigational Site Number 840007 Recruiting
Milwaukee, Wisconsin, United States, 532261
Investigational Site Number 056001 Recruiting
Liège, Belgium
Investigational Site Number 076001 Recruiting
Porto Alegre, Brazil, 90035 003
Investigational Site Number 124001 Recruiting
Montreal, Canada, H4J 1C5
Investigational Site Number 250002 Recruiting
Bron Cedex, France, 69677
Investigational Site Number 250001 Recruiting
Garches, France, 92380
Investigational Site Number 348001 Recruiting
Pécs, Hungary, 7623
Investigational Site Number 578001 Recruiting
Bergen, Norway, 5021
Investigational Site Number 724001 Recruiting
Badalona, Spain, 08916
Investigational Site Number 724002 Recruiting
Girona, Spain, 17007
Investigational Site Number 158001 Recruiting
Taipai, Taiwan, 10043
United Kingdom
Investigational Site Number 826002 Recruiting
London, United Kingdom, WC1N 3JH
Investigational Site Number 826004 Recruiting
London, United Kingdom, NW1 2PJ
Sponsors and Collaborators
Genzyme, a Sanofi Company
Study Director: Medical Monitor Genzyme, a Sanofi Company
  More Information

No publications provided

Responsible Party: Sanofi ( Genzyme, a Sanofi Company )
ClinicalTrials.gov Identifier: NCT01839526     History of Changes
Other Study ID Numbers: AGAL19110, 2012-001966-14, MSC 12711
Study First Received: April 11, 2013
Last Updated: January 23, 2015
Health Authority: United States: Food and Drug Administration

Keywords provided by Sanofi:
Fabry disease

Additional relevant MeSH terms:
Fabry Disease
Brain Diseases
Brain Diseases, Metabolic
Brain Diseases, Metabolic, Inborn
Cardiovascular Diseases
Central Nervous System Diseases
Cerebral Small Vessel Diseases
Cerebrovascular Disorders
Genetic Diseases, Inborn
Genetic Diseases, X-Linked
Lipid Metabolism Disorders
Lysosomal Storage Diseases
Lysosomal Storage Diseases, Nervous System
Metabolic Diseases
Nervous System Diseases
Vascular Diseases
Lipid Metabolism, Inborn Errors
Metabolism, Inborn Errors

ClinicalTrials.gov processed this record on March 26, 2015