Detection of Annexin A2 in Systemic Lupus Erythematosus (ANLUP)

July 17, 2020 updated by: Centre Hospitalier Universitaire, Amiens

There is substantial clinical and biological intra and inter-patient variability in SLE. Vascular, renal and neurologic deficiency can be organ-threatening or even life-threatening, leading to increased morbidity and mortality.

Thus, biomarkers of disease activity and prognosis are required for regular follow-up of SLE patients.

Implication of Toll-like Receptors (TLRs) in SLE has been extensively studied in mice models and humans. Self nuclear antigens bind to TLRs which are located on the surface of dendritic cells, B-cells, and endothelial cells, leading to production of pro-inflammatory cytokines and pathologic autoantibodies involved in organ dysfunction of SLE patients. Moreover, TLR expression in SLE is significantly higher and significantly correlated with disease activity.

Annexin A2 (ANXA2) is a member of the annexins superfamily which exists as a monomer or heterotetramer and is implicated in several biological processes. Most notably, it binds to ẞ2GP1/anti-ẞ2GP1 antibodies and mediates endothelial cell activation via a TLR4 signaling pathway, highlighting its key role in Antiphospholipid Syndrome (APS) frequently associated with SLE.

ANXA2 is also involved in the physiopathology of SLE. Anti-DNA autoantibodies can bind with ANXA2 expressed on mesangial cells in lupus nephritis. Besides, a french study carried out in Amiens' University Hospital showed that vascular lesions in lupus nephritis were associated with a significant increase in vascular expression of ANXA2.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

120

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 Locations

  • France
      • Amiens, France, 80054
        • CHU Amiens

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

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

Inclusion criteria for patients :

  • Age ≥ 18 years old
  • All SLE patients fulfilling the 1997 ACR criteria, followed at the Departments of Internal Medicine and Nephrology at CHU Amiens-Picardie, regardless of clinical status, treatment, and disease activity.
  • Written informed consent

Inclusion criteria for control subjects :

  • Age ≥ 18 years old
  • Written informed consent

The patients will be compared with age- and sex-matched control subjects.

Exclusion Criteria:

  • drug-induced lupus erythematosus
  • refusal or incapacity to provide a 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: BASIC_SCIENCE
  • Allocation: NON_RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
EXPERIMENTAL: SLE patients
Systemic Lupus Erythematosus
Other: ANXA2
serum and urinary concentration
ACTIVE_COMPARATOR: control subjects
age- and sex-matched control subjects
Other: ANXA2
serum and urinary concentration

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
serum concentration of ANXA2
Time Frame: Day 0
Day 0
urinary concentration of ANXA2
Time Frame: Day 0
Day 0

Collaborators and Investigators

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

Sponsor

Centre Hospitalier Universitaire, Amiens

Investigators

  • Principal Investigator: Valéry SALLE, MD, CHU Amiens

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)

May 9, 2017

Primary Completion (ACTUAL)

November 9, 2018

Study Completion (ACTUAL)

November 9, 2018

Study Registration Dates

First Submitted

January 20, 2017

First Submitted That Met QC Criteria

January 24, 2017

First Posted (ESTIMATE)

January 26, 2017

Study Record Updates

Last Update Posted (ACTUAL)

July 20, 2020

Last Update Submitted That Met QC Criteria

July 17, 2020

Last Verified

July 1, 2020

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • PI2017_843_0001

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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