The other TEM subpopulation, MC11 (CD27−CD28+CD38+CD127−CD197−), was also the highest in SLE, highlighting the discrimination from RA and SSc, not only from HCs (HCs: 0.624%; RA: 0.593%; SSc: 0.716%; SLE: 2.675%). This evidence concerns the gene CD38 and systemic lupus erythematosus.