KIR3DL1 and rheumatoid arthritis: The expression of KIR2DS2 molecule on T cells with unusual phenotype, CD4+CD28-KIR+, and an association of KIR2DS2 but not KIR2DS1 gene with vascular inflammatory complication of RA were described by Joerg Goronzy’s group (Yen et al., 2001).