Crossover Clinical Trial, Randomized, Double Blind, Placebo Controlled Trial

July 19, 2021 updated by: Maimónides Biomedical Research Institute of Córdoba

Crossover Clinical Trial, Randomized, Double Blind, Placebo Controlled Trial. Modulation of Cellular Mediators and Repair Endothelial Damage in Patients With Chronic Renal Disease Through Inhibition of Xanthine Oxidase

The purpose of this study is to determine the effect of inhibiting xanthine oxidase with allopurinol in patients with chronic kidney disease in asymptomatic hyperuricemia endothelial injury and vascular repair mechanisms.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The purpose of this study is to determine the effect of inhibiting xanthine oxidase with allopurinol in patients with chronic kidney disease in asymptomatic hyperuricemia endothelial injury and vascular repair mechanisms, evaluating the plasma concentration of angiogenic factors, microparticles of endothelial cells and the cell number circulating endothelial progenitor.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
22

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

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

  • Spain
      • Córdoba, Spain, 14002
        • Hospital Universitario Reina Sofia de Cordoba

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 70 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients willing and able to give informed consent for participation in the study
  • Ability to understand study procedures and to comply with it for the duration of the study.
  • Subjects of both sexes, the age range between 18 and 70 years old.
  • Serum uric acid above 7 mg / dl.
  • Estimated glomerular filtration rate by MDRD abbreviated formula less than 60 ml / min / 1.73 m2 and above 15 ml / min / 1.73 m2.
  • Stability of renal function (serum creatinine increase without exceeding 50% in the three months before the start of the study).
  • Clinically stable in terms of no hospitalizations of cardiovascular events in the 3 months before the study began.

Exclusion Criteria:

  • Drop active in the 60 days prior to study initiation.
  • Use of allopurinol within 60 days preceding baseline
  • Active infections within 30 days prior to baseline.
  • Patients with systemic inflammatory disease
  • Infection with HIV, Hepatitis C and Hepatitis B.
  • History of cancer within 5 years prior to the first dose of study medication
  • Chronic liver disease.
  • Immunosuppressive therapy.
  • Pregnant women, breastfeeding or planning to become pregnant.
  • Allergy or sensitive to allopurinol.
  • Addiction to drugs or alcohol, in the opinion of the investigator, may interfere with compliance with study requirements.
  • Inability or unwillingness of the individual or legal guardian or representative to give written informed consent.

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: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: CROSSOVER
  • Masking: QUADRUPLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
PLACEBO_COMPARATOR: Placebo
Drug: Placebo
Placebo
ACTIVE_COMPARATOR: Allopurinol
Drug: Allopurinol
Allopurinol

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Circulating endothelial progenitor cells concentration and microparticles derived from endothelial cells
Time Frame: Data collected after 4 weeks, 8 weeks and 12 weeks.
Effect of inhibiting xanthine oxidase with allopurinol in patients with CKD
Data collected after 4 weeks, 8 weeks and 12 weeks.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Level of oxidative stress
Time Frame: After patient visit (0 weeks, 4, 8 and 12 weeks)
Evaluated through quantification of oxygen-reactive species
After patient visit (0 weeks, 4, 8 and 12 weeks)
Level of micro inflammation
Time Frame: After patient visit (0 weeks, 4, 8 and 12 weeks)
Evaluated through quantification of C-reactive protein, proinflammatory cytokines, CD14+ and CD16+ monocytes
After patient visit (0 weeks, 4, 8 and 12 weeks)
Level of endothelial dysfunction
Time Frame: After patient visit (0 weeks, 4, 8 and 12 weeks)
Endothelium-dependant vasodilation in response to ischemia evaluated through changes in capillar flux using Doppler laser PeriFlux system 5000
After patient visit (0 weeks, 4, 8 and 12 weeks)
Blood pressure
Time Frame: Each visit (0 weeks, 4 weeks, 8 weeks and 12 weeks) for 24 hours
Each visit (0 weeks, 4 weeks, 8 weeks and 12 weeks) for 24 hours
Glomerular filtration ratio
Time Frame: After patient visit (0 weeks, 4 weeks, 8 weeks and 12 weeks)
Estimated through MDRD-4 y Cockroft-Gault.
After patient visit (0 weeks, 4 weeks, 8 weeks and 12 weeks)
Microalbuminuria / Proteinuria
Time Frame: Daily, using first urine of the day as a sample.
Evaluated through albumin/creatinin ratio and protein/creatinine ratio
Daily, using first urine of the day as a sample.

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Maimónides Biomedical Research Institute of Córdoba

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Rafael Santamaría, MD, Hospital Universitario Reina Sofia

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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
February 26, 2014

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 29, 2016

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 29, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 31, 2015

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 19, 2021

First Posted (ACTUAL)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 30, 2021

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 30, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 19, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • PI12/01866

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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