(Fig 11A and Fig 11B) CD158b on NK cells from SLE and controls was enhanced with IL-15 (SLE, 22.5±2.9% vs. 19.2±2.4%, p = 0.003; Controls, 8.5±2.4% vs. 4.4±1.5%, p = 0.028) (Fig 11A). Here, IL15 is linked to systemic lupus erythematosus.