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Seronegative rheumatoid arthritis
Seronegative rheumatoid arthritis What is seronegative rheumatoid arthritis (RA)? Seronegative RA is arthritis that is negative for antibodies in the blood. It tends to be associated with the HLA-DR1 more commonly than the HLA-DR4 gene (although other studies have found a similar rate of HLA-DR4 expression with seronegative and seropositive RA). It has also been suggested