Overview
Psoriatic arthritis (PsA), a chronic immune-mediated heterogeneous inflammatory disease characterized by musculoskeletal inflammation (arthritis, enthesitis, spondylitis and dactylitis), usually occurs in patients with psoriasis. The spondyloarthritides (SPs) (of which psoriasis is one) are a group of inflammatory diseases that share an association with the HLA-B27 MHC class I molecule.
Given this association, these diseases are classically regarded as disorders of adaptive immunity.
In bone marrow donation, HLA-B exon 1 dimorphism (HLAB leader) is associated with risk of graft- versus-host disease, relapse and overall survival after unrelated hematopoietic cell transplantation (UHCT), haploidentical UHCT and cord transplantation. In the literature, there are no studies suggesting the involvement of the HLA B leader gene in MS and RPs. The main aim of this study is to compare the presence of the HLA B leader gene between a group of patients with psoriatic arthritis and a healthy group without inflammatory disease.
Eligibility
Inclusion Criteria:
- For the "Patient" group:
- Patient over 18 years of age
- Patient affiliated to a social security scheme
- Patient with psoriatic arthritis according to the CASPAR 2006 classification, followed at the CHU Amiens-Picardie.
- For the "control" group:
- Individuals over 18 years of age
- Individual affiliated to a social security scheme
- Individual having agreed to participate in the study
- Individuals with no inflammatory or autoimmune diseases
Exclusion Criteria:
- Patient or control not understanding French
- Patient not included in the Amiens Picardie University Hospital's "Psoriatic Rheumatism" cohort, or control not included in the Amiens Picardie University Hospital's bone marrow donor cohort.
- Patient or control objecting to participation in the study
