We discovered that most SLE patients in the present study cohort showed decreased proportions of ILC2 in CD45+ peripheral blood cells (0.02805 ± 0.005371%) when compared to normal controls (0.05167 ± 0.01069%) (Figure 3F), and Metrnβ levels showed a negative correlation with ILC2 (r = −0.4316, p = 0.0277) (Figure 3G). Here, PTPRC is linked to systemic lupus erythematosus.