Although no clear correlation with disease activity and/or inflammatory parameters has been established, the two most recent studies showed that DNT cell infiltration in the kidneys of SLE patients was increased and correlated with renal function (in terms of blood ureic nitrogen levels) [45] and displayed a more active/proliferative status according to their expression of Ki67 [46]. Here, MKI67 is linked to systemic lupus erythematosus.