Pyrophosphate and Arterial Calcification in Chronic Kidney Disease (Predical)

September 5, 2023 updated by: Centre Hospitalier Universitaire de Nice

Pyrophosphate: a New Biomarker to Predict Arterial Calcification in Chronic Kidney Disease

Arterial calcifications start at early stages of chronic kidney disease (CKD) and are associated to cardiovascular mortality. Pyrophosphate (PPi) is an endogenous compound, which stops the mineralization process in bones and is expected to act at ectopic sites. In uremic rats, low PPi plasma levels are associated with high calcium content in the aorta and peritoneal administration of PPi blocks this process. People on maintenance dialysis or kidney transplant recipients have low plasma levels of PPi and show high scores of arterial calcification. The purpose is to determine the role of low PPi in the development of arterial calcifications in patients with CKD stage 3 or 4. To that aim, 252 patients with eGFR between 59 et 20 ml/min/1,73 m2 will be recruited and will be examined at baseline and three years later.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

242

Phase

  • Not Applicable

Contacts and Locations

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

Study Contact

Study Locations

  • France
    • Alpes Maritimes
      • Nice, Alpes Maritimes, France, 06001
        • Recruiting
        • CHU de Nice
        • Contact:
        • Principal Investigator:
          • Favre Guillaume, PhD

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

Description

Inclusion Criteria:

  • eGFR between 59 et 20 ml/min/1,73 m2 twice at three month interval

Exclusion Criteria:

  1. kidney transplantation
  2. acute inflammatory disease or active cancer

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

  • Primary Purpose: Other
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Myocardial CT
The investigator will collect the usual clinical history and data. Risk factors and cardiovascular events are identified. A blood sample dedicated to the study and necessary for routine care is taken. The pulse wave velocity and systolic pressure index are measured. A myocardial CT scan coupled with a computed tomography is performed. The patient collects stools at his home, simply conditions them and sends them by mail to the centre, which stores them.
Other: Collect blood sample
A blood sample dedicated to the study and necessary for routine care is taken. The pulse wave velocity and systolic pressure index are measured. A myocardial CT scan coupled with a computed tomography is performed. The patient collects stools at his home, simply conditions them and sends them by mail to the centre, which stores them.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Plasma levels of PPI
Time Frame: 3 years
To show that low plasma levels of PPi at baseline is associated with a high progression of arterial calcification at three years after adjustment for confounding variables
3 years

Collaborators and Investigators

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

Sponsor

Centre Hospitalier Universitaire de Nice

Investigators

  • Principal Investigator: Favre Guillaume, PhD, CHU de Nice, Service de Néphrologie

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 (Actual)

March 14, 2022

Primary Completion (Estimated)

March 14, 2025

Study Completion (Estimated)

March 14, 2028

Study Registration Dates

First Submitted

June 29, 2021

First Submitted That Met QC Criteria

June 29, 2021

First Posted (Actual)

July 6, 2021

Study Record Updates

Last Update Posted (Estimated)

September 6, 2023

Last Update Submitted That Met QC Criteria

September 5, 2023

Last Verified

September 1, 2023

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 19-API-02

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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