CD4 and systemic lupus erythematosus: However, CD4+ Tef MMP-Low (AUC = 0.602, P = 0.124), SCMM-B cells (AUC = 0.626, P = 0.0579), SCMM-NK cells (AUC = 0.603, P = 0.121), and SCMM-CD4+ Tef (AUC = 0.54, P = 0.5422) cells showed no diagnostic value for SLE (Table 3).