Impact of Anti-HLA Donor-specific Antibodies in ABO-incompatible Kidney Transplantation (A3)

August 19, 2019 updated by: University Hospital, Toulouse
It was previously suggested an improvement of graft survival in ABO/HLA incompatible kidney transplantation (KT) compared with HLA (human leukocyte antigen) incompatible transplantation. Here, the investigators would analyse clinical, biological and histological results of ABO/HLA incompatible kidney transplant recipients, comparing with ABO or HLA compatible kidney transplantation.

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 investigators propose to analyze the clinical, biological and histological course of kidney function, but also to investigate the T and B cells population after KT in ABO incompatible, ABO/HLA incompatible and HLA incompatible kidney transplantation (1 and 7 years posttransplantation in each groups).

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.
58

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.
  • 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 Locations

  • France
      • Toulouse, France, 31059
        • 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

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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patient receiving a KT and followed at least one year in Toulouse Hospital
  • Patient who have signed informed consent
  • > 18 years old

Exclusion Criteria:

  • Patient under protective measures
  • Patients treated for cancer, infectious or immune disease by molecules that could interfere with lymphocyte populations : Interleukin 6 (IL6) blockers, Programmed cell death 1(PD1) and the cytotoxic T-lymphocyte-associated antigen 4 (CTL4) blockers.
  • Immunosuppressive treatments withdrawal - Patient in chronic dialysis
  • Ongoing pregnancy or pregnancy in the past year
  • Past of splenectomy

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: Basic Science
  • Allocation: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

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.
Experimental: ABO/HLA incompatible KT
Blood sampling for descriptive analysis of clinical, biological and histological of 12 ABO and HLA incompatible kidney transplantation (KT)
Other: Blood sampling
Descriptive analysis of clinical, biological and histological of 3 arms: ABO incompatible, HLA incompatible, and ABO/HLA incompatible kidney transplantation (1 and 5 years posttransplantation in each groups)
Experimental: ABO incompatible KT
Blood sampling for descriptive analysis of clinical, biological and histological of 28 ABO incompatible kidney transplantation
Other: Blood sampling
Descriptive analysis of clinical, biological and histological of 3 arms: ABO incompatible, HLA incompatible, and ABO/HLA incompatible kidney transplantation (1 and 5 years posttransplantation in each groups)
Experimental: HLA incompatible KT
Blood sampling for descriptive analysis of clinical, biological and histological of 20 HLA incompatible kidney transplantation
Other: Blood sampling
Descriptive analysis of clinical, biological and histological of 3 arms: ABO incompatible, HLA incompatible, and ABO/HLA incompatible kidney transplantation (1 and 5 years posttransplantation in each groups)

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
Gene expression related to antibody mediated rejection
Time Frame: 1 year posttransplantation
To determine expression of genes related to antibody mediated rejection (inflammation, and endothelial cell activation) by transcriptomic analyse (whole genome micro-array) on kidney biopsies
1 year posttransplantation

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
description of T subsets cells
Time Frame: 1 to 5 years posttransplantation
to analyse of T subsets cells after Kidney transplantation in blood samples of patients by flow cytometry
1 to 5 years posttransplantation
description of B subsets cells
Time Frame: 1 to 5 years posttransplantation
to analyse of B subsets cells after Kidney transplantation in blood samples of patients by flow cytometry
1 to 5 years posttransplantation
description of lymphocytes rates
Time Frame: 1 to 5 years posttransplantation
to analyse rates of lymphocytes after Kidney transplantation in blood samples of patients by flow cytometry
1 to 5 years posttransplantation
Evolution of creatinine clearance
Time Frame: 1 to 5 years posttransplantation
to analyse creatinine clearance in blood samples of patients after kidney transplantation
1 to 5 years posttransplantation
Evolution of systematic annual kidney biopsies
Time Frame: 1 to 5 years posttransplantation
To analyse the evolution of systematic annual kidney biopsies by microscopy
1 to 5 years posttransplantation

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.
University Hospital, Toulouse

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: Arnaud DEL BELLO, MD PhD, University Hospital, Toulouse

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 6, 2018

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.
May 2, 2018

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.
May 5, 2018

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).
January 19, 2018

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.
February 5, 2018

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.
February 6, 2018

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.
August 20, 2019

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.
August 19, 2019

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.
August 1, 2019

More Information

Terms related to this study

Keywords

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.
  • RC31/17/0426

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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