KIR2DL1 and psoriatic arthritis: This conclusion concurs with previous reportsshowing a link between KIR2DS1 and KIR2DS2 andrisk for developing psoriatic arthritis, particularly in the absence of the HLAligands for their homologous inhibitory receptors, KIR2DL1 and KIR2DL2/3 [34], [35].