Abstract
To assess whether the HLA-DR4 association found in rheumatoid arthritis (RA) is also seen in the large granular lymphocyte (LGL) syndrome. HLA-DR genotyping was performed using restriction fragment length polymorphism and polymerase chain reaction analysis. LGL syndrome patients with RA showed the same HLA-DR4 association seen in RA/Felty's syndrome (FS), while LGL syndrome patients without arthritis did not. It is proposed that FS and the LGL syndrome represent different variants of a broader syndrome comprising RA, neutropenia, LGL expansions, HLA-DR4 positivity, and splenomegaly.
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