Gene Expression Profiling in PBMCs as a Tool for Prediction of Infliximab Responsiveness in Rheumatoid Arthritis

June 25, 2013 updated by: University Hospital, Rouen

The objective of the study is to identify and validate predictive markers of infliximab responsiveness in RA patients by 2 approaches: i) measuring biochemical, immunological and bone markers in sera because of their involvement in pathogenic mechanisms; ii) identifying gene-expression signatures in PBMCs by the transcriptomic analysis.

Patients with active RA (ACR criteria) were given i.v. 3 mg/kg infliximab associated with metotrexate at weeks 0, 2, 6, and every 8th week. Infliximab efficacy was evaluated at week 14, using the EULAR response criteria.

  1. Just before the starting of infliximab treatment, the following parameters were measured in the sera: i) immunological tests: rheumatoid factor (IgA, IgG, IgM), anti-CCP, autoAb recognizing the 27 C-terminal fragment (ACAST-C27) and domain I (ACAST-DI) of calpastatin, anti-G6PI, anti a-enolase, anti-keratin and anti-perinuclear factor; ii) biochemical markers: CRP, MMP-1, MMP-3, TIMP-1, TIMP-2; markers of bone resorption: pyridinolin, deoxypyridinolin, osteoprotegerin, sRANKL, COMP. The predictive value of each parameter for a response/non-response to infliximab was analysed using Fischer's exact, Mann-Whitney and Chi2 tests.
  2. A blood sample was collected just before the onset of infliximab treatment and total RNAs were extracted from the peripheral blood mononuclear cells. The [33P] radiolabeled mRNAs were hybridized (duplicate or triplicate) over a set of 10.000 human cDNA probes spotted at a high density on nylon membranes. Data were normalized and filtered to allow the comparison between RNA samples. Statistical analyses were performed with the R software and hierarchical clustering was performed with the Cluster and Tree View softwares.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Anticipated)

40

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
      • Rouen, France, 76031
        • CHU de rouen - Hôpitaux de Rouen

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

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Is age 18 years old or older Satisfies the 1987 American College of Rheumatology revised criteria for Rheumatoid arthritis Has active disease at the time of randomization as indicated by a DAS28> 5.1 Has a disease at least refractory to DMARDs whose methotrexate or leflunomide Is capable of understanding and signing an informed consent form Agrees to use a medically accepted form of contraception during the study

Exclusion Criteria:

  • Is pregnant or breast-feeding or without Has significant concurrent medical diseases including cancer or a history of cancer within 5 years of entering the study, uncompensated congestive heart failure, significant active infection or any underlying diseases that could predispose subjects to infections (whose tuberculosis) Has allergy to infliximab

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

Collaborators and Investigators

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

Sponsor

University Hospital, Rouen

Investigators

  • Principal Investigator: Xavier Le Loët, Rouen University Hospital

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

April 1, 2003

Primary Completion (Actual)

May 1, 2004

Study Completion (Actual)

December 1, 2005

Study Registration Dates

First Submitted

September 13, 2005

First Submitted That Met QC Criteria

September 13, 2005

First Posted (Estimate)

September 21, 2005

Study Record Updates

Last Update Posted (Estimate)

June 26, 2013

Last Update Submitted That Met QC Criteria

June 25, 2013

Last Verified

June 1, 2013

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2002/061/HP

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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