In SLE patients, the median CD4+ and CD8+ T cell counts were 434.5 (IQR 270.3-620.3) cells/μl and 287.0 (IQR 196.0-397.3) cells/μl, respectively, while in healthy subjects, the median CD4+ and CD8+ T cell counts were 1054.0 (IQR 760.5-1361.0) cells/μl and 532.0 (IQR 376.8-748.8) cells/μl, respectively. Here, CD4 is linked to systemic lupus erythematosus.