Alteration of ILC subset in SLE patients. PBMCs were collected from SLE patients and healthy controls. 49 SLE patients were scored and classified into inactive disease (SLEDAI: 0–4, n = 4) (data not shown), mild disease activity (SLEDAI: 5–9, n = 10), moderate disease activity (SLEDAI: 10–14, n = 16) and severe disease activity (SLEDAI > 15, n = 19), Percentages of ILC1/ILCs (A, D), ILC2/ILCs (B, E), ILC3/ILCs (C, F) in both groups are shown. Correlations between ILC1/ILCs (G), ILC2/ILCs (H), ILC3/ILCs (I) and SLEDAI are presented.