Centre Hospitalier Universitaire De Nantes

Institut National De La Sante Et De La Recherche Medicale

Université De Nantes

Centre National De La Recherche Scientifique

Ose Immunotherapeutics

Centre National De La Recherche Scientifique-cnrs

Inserm

Richard Danger

Sophie Brouard

Antoine Magnan

Pierre-Joseph Royer

Magali Giral

Nicolas Poirier

Gérard Ramstein

The invention relates to the identification of biomarkers of the response status of a patient for a treatment with anti-TN-Falpha agents, for treatment with anti-α4β7 agents or with both anti-TNFalpha agent and anti-α4β7 agents and to their use in assessing such status, in particular for assessing nonresponsive status for a treatment with anti-TNFalpha agents or respectively with anti-α4β7 agent in human patients suffering from inflammatory condition or disease, in particular Inflammatory Bowel Disease (IBD), in particular Ulcerative Colitis or Crohn's disease. The invention describes a method of in vitro assessing whether a treatment with anti-TNFalpha agent or with anti-α4β7 agent may be useful in a human patient suffering from inflammatory condition or disease, in particular when said condition or disease is a chronic and/or relapsing one, particularly a gastrointestinal, more particularly intestinal, inflammatory condition or disease which is eligible for treatment with anti-TNFalpha agent or respectively with anti-α4β7 agent. In a specific embodiment the method is suitable to assess whether such patient would be non-responsive to treatment with such anti-TNFalpha agent or respectively with anti-α4β7 agent and comprising determining a molecular signature in a biological sample previously obtained from said human patient.

Biomarkers for assessing the response status for treatment of Inflammatory condition or disease affecting the digestive tract such as inflammatory bowel disease in human patients

Some embodiments are directed to a prognostic method for determining whether a subject is at risk of having the CLAD, comprising: measuring the expression level of POU2AF1 or BLK in a biological sample obtained from the subject; comparing the expression level of POU2AF1 or BLK with a predetermined reference value and concluding that the subject is at risk of having CLAD when the expression level of POU2AF1 or BLK is lower than the predetermined reference value.

Methods and compositions for predicting chronic lung allograft dysfunction

The present invention relates to a method for discriminating an operationally tolerant (TOL) subject from a non-operationally tolerant (STA) subject, comprising the following steps: 

Methods for discriminating a tolerant subject

The present invention relates to a method for predicting the risk of having the CLAD in a subject by measuring the expression level of TCL1A in a biological sample obtained from said subject. Inventors have used a large-scale gene expression profiling of whole blood cells to identify early biomarkers of BOS. Microarray experiments performed from 80 patients (40 stable (STA) and 40 BOS) identified 47 genes differentially expressed between STA and BOS recipients. An independent set of patients (13 STA, 11 BOS) was then used for external validation by qPCR. T-cell leukemia/lymphoma protein 1A (TCL1A) gene was identified and validated as a predictive marker of BOS more than 6 months before diagnosis with area under curve of 0.77. Accordingly, the invention relates to a method for predicting the risk of having the chronic lung allograft dysfunction (CLAD) and to a method for preventing the risk of having CLAD by administering immunosuppressive drugs.

The invention relates to a method for predicting graft alterations in a transplanted patient, comprising a step of determining the expression levels of bactericidal/permeability-increasing protein (BPI), chemokine (C motif) ligand 1 (XCL1) and thioredoxin domain containing 3 (TXNDC3) genes in a biological sample obtained from said transplanted patient.

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Rezé, France

Richard Danger