Chronic Kidney Disease: Determinants of Progression and Cardiovascular Risk (PROGREDIR)

January 5, 2018 updated by: Silvia Maria de Oliveira Titan, University of Sao Paulo

Chronic Kidney Disease: Determinants of Progression and Cardiovascular Risk. A Cohort Study in a Brazilian Population

Chronic kidney disease has become an important Public Health issue in most developed and developing countries, with increasing incidence and prevalence rates. The cost associated with chronic kidney disease patients is very high, derived from renal replacement therapy and the cost associated with the high cardiovascular risk of this population. Primary and secondary preventive measures are imperative. In this sense, the comprehension of mechanisms and biomarkers associated with CKD progression and mortality risk in this population is an important area of research. Cohort studies are important tools for testing risk factors and biomarkers. Currently, CKD cohorts, particularly of those not on dialysis, are few and restricted to North America and Europe.

The present study established a cohort of 454 CKD participants (not on dialysis) in Sao Paulo, Brazil, who will be followed for 7-10 years. Baseline data collection was wide, including medical history, diet (food frequency questionnaire), calcium score, echocardiography, pulse wave velocity, cardiac frequency variability, carotid intimal media thickness, retinography, and an extensive biobank. Follow-up is ongoing and made through annual telephone interviews including questions on death, hospitalizations, and need of renal replacement therapy (RRT). Vital status is investigated periodically by a hot-pursuit strategy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

454

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

30 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients attending the outpatient service of Hospital das Clínicas, São Paulo, a public university facility providing quaternary-level care for patients with chronic diseases, were invited to participate in this study. Initially, from the outpatient records, all patients aged

≥ 30 years and at least two measurements of creatinine (with a minimum interval of 3 months) ≥ 1.6 mg/dl for men and ≥ 1.4 mg/ dl for women were considered potential candidates. Patients attending oncology, psychiatry, human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS), viral hepatitis and glomerulonephritis services were excluded. The remaining candidates were then contacted by phone and were invited to participate if they did not meet any exclusion criteria.

Description

Inclusion Criteria:

  • Patients attending the outpatient service of Hospital das Clínicas, São Paulo, Brazil.
  • ≥ 30 years.
  • at least two measurements of creatinine (with a minimum interval of 3 months) ≥ 1.6 mg/dl for men and ≥ 1.4 mg/ dl for women.

Exclusion Criteria:

  • Patients attending oncology, psychiatry, human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS), viral hepatitis and glomerulonephritis services were excluded.
  • hospitalization within the last six months;
  • acute myocardial infarction within the last six months;
  • autoimmune diseases;
  • current pregnancy;
  • psychiatric diseases;
  • ongoing chemotherapy or immunosuppressive therapy;
  • current renal replacement therapy;
  • HIV/AIDS infection;
  • hepatitis B or C;
  • any organ transplantation.

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: Cohort
  • Time Perspectives: Prospective

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Overall Mortality
Time Frame: 7 years
Mortality of any cause, confirmed by official death certificates obtained through several health offices (PRO-AIM, Fundação SEADE and National Mortality Registry).
7 years
Renal replacement therapy
Time Frame: 7 years

Initiation of any modality of renal replacement therapy, even if not permanently.

Besides participant information, RRT will be ascertained through the city and state´s Registries (Sao Paulo State Registry of Dialysis and Transplantation, Sao Paulo City Registry of Dialysis and Transplantation).
7 years

Collaborators and Investigators

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

Sponsor

University of Sao Paulo

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.

General Publications

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 1, 2012

Primary Completion (Actual)

December 15, 2013

Study Completion (Actual)

December 15, 2013

Study Registration Dates

First Submitted

December 20, 2017

First Submitted That Met QC Criteria

January 5, 2018

First Posted (Actual)

January 8, 2018

Study Record Updates

Last Update Posted (Actual)

January 8, 2018

Last Update Submitted That Met QC Criteria

January 5, 2018

Last Verified

January 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2011/17341-0

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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