AS is thought to be an inherited condition, and there are some genetic markers that could make you more likely to develop the ...

Affected joints will be: Human leukocyte antigen B27 (HLA-B27) blood tests can support a diagnosis of juvenile PsA. HLA-B27 is a protein found on the surface of blood cells that helps the immune ...

Measuring HLA B27 (“human leukocyte antigen”), rheumatoid factors, antinuclear antibodies (ANA) do not enable a diagnosis but merely help in classifying JIA. 1. Petty RE, Southwood TR ...

The process of thymic (central) tolerance eliminates high-affinity self-antigen-specific T cells, as well as those that fail to recognize self antigens entirely, and spares T cells that recognize ...

a Since enthesitis, dactylitis, uveitis, peripheral arthritis, psoriasis and IBD might not be present at disease onset but might develop later, it is recommended to ignore a negative result for ...