Graft Vs Host Disease, Hematopoietic Stem Cells
Conditions
Brief summary
Graft-versus-host disease (GVHD) is a frequent and severe complication of hematopoietic stem cell transplantation (HSC), and is responsible for significant early mortality despite prophylactic strategies developed in recent decades, Especially since it is resistant to first-line treatment. The present diagnosis is difficult, non-specific and is based on the combination of an evocative clinical context (CSH allograft, time to appearance before J100, characteristic clinical manifestations), suggestive anatomo-pathological analysis (predominantly inflammatory infiltrate Lymphocyte, mucosal edema and presence of apoptotic bodies), and the exclusion of any differential diagnosis (in particular serology / negative viral PCR). However, to date there is no molecular characterization of this manifestation, and therefore no specific treatment. The nCounter® nanostring technology allows the rapid and simple analysis of the simultaneous expression of a group of genes (up to 800 on the same sample), from a very small amount of RNA, and from samples with difficulty Such as fabrics already fixed to formaldehyde and included in paraffin. It allows the detection of a "molecular signature" of the tissue analyzed. No transcriptomic analysis has ever been performed on human tissues with GVHD.
Interventions
OTHERTranscriptomic analysis of GVHD biopsies
The transcriptomic analysis of GVHD biopsies aims at: * to demonstrate an evocative or even specific molecular profile, making the diagnosis of GVHD easier * to identify new intracellular signaling pathways that could lead to new therapeutic
Sponsors
Centre Hospitalier Universitaire, Amiens
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Person aged ≥ 18 years * Patients who have received an HSC allograft since June 2012 * Having presented a suspicion of cutaneous or digestive GVHD before J100 post-allograft * Of which the diagnosis was retained by the combination of clinical and histological criteria * Or whose diagnosis has been reversed by histological analysis, for the reactive / inflammatory biopsies that serve as control * The diagnosis of which was made between 01/01/2013 and 31/12/2015 * Survived at least 1 month to monitor clinical progress
Exclusion criteria
* Whose biopsy specimens were also the sites of a viral reactivation (EBV, CMV, HHV) that could mimic a GVHD * Having survived less than 1 month after the diagnosis of GVHD
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Transcriptomic profile by analysis of the expression of the mRNAs of a determined panel of 800 genes regulating the immune response | 3 months |
Countries
France
Outcome results
None listed