Influence of Polymorphisms in the ATP6V1 Gene of the V-ATPase on the Development of Incomplete Distal Renal Tubular Acidosis

October 8, 2018 updated by: University Hospital Inselspital, Berne

Comparison of Furosemide/Fludrocortisone With Ammonium Chloride Loading Test in the Diagnosis of Incomplete dRTA in Kidney Stone Formers

Purpose

  1. To compare the performance of the two currently employed urinary acidifications tests in stone formers, the furosemide/fludrocortisone and ammonium chloride loading test.
  2. To study the impact of polymorphisms in the genes ATP6V1B1, ATP6V0A4 and SLC4A1 on urinary acidification in stone formers.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

170

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
      • Bern, Switzerland, 3010
        • Department of Nephrology and Hypertension, Bern University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients suffered from at least one kidney stone episode.

Description

Inclusion Criteria:

  • One or more episodes of nephrolithiasis

Exclusion Criteria:

  • Absence of informed consent
  • All conditions affecting renal acidification
  • Pregnancy
  • Nursing

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
All study participants
Furosemide-Fludrocortisone-Test and Ammonium chloride-Loading Test will be performed in renal stone patients.
Drug: Furosemide-Fludrocortisone-Test (test for urinary acidification)
The presence of a lack of urinary acidification will be assessed by an appropriate test in all patients.
Other Names:
  • Application of Furosemide (Lasix® ) and Fludrocortisone (Florinef®)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Capability of urinary acidification
Time Frame: Five to six hours
Five to six hours

Secondary Outcome Measures

Outcome Measure
Time Frame
Polymorphisms in the ATP6V1 gene
Time Frame: 12 months
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital Inselspital, Berne

Investigators

  • Principal Investigator: Daniel Fuster, Attending physician Nephrology, Department of Nephrology and Hypertension, Bern University Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2012

Primary Completion (Actual)

December 31, 2016

Study Completion (Actual)

May 12, 2017

Study Registration Dates

First Submitted

September 10, 2012

First Submitted That Met QC Criteria

September 17, 2012

First Posted (Estimate)

September 21, 2012

Study Record Updates

Last Update Posted (Actual)

October 9, 2018

Last Update Submitted That Met QC Criteria

October 8, 2018

Last Verified

October 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 090/12

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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