In one study, association between antibodies to HSP60 from yersinia enterocolitica in patients suffering from uveitis was found primarily in HLA-B27 positive patients [28], whereas in another study, no difference in levels of IgA antibodies against C. pneumoniae HSP60 between HLA-B27 –positive and negative patients with uveitis was found [29]. The gene discussed is CD79A; the disease is uveitis.