Table 1.

Demographic and renal characteristics of the patients at inclusion

F/M	99/6
Mean age (±SEM)	37.4±10.7
N patients with no previous renal BILAG A	6
N patient with one previous renal BILAG A	69
N patients with two previous renal BILAG A	25
N patients with three or more previous renal BILAG A	5
Renal histology during the previous flares
Class II	4
Class III	22 (2 of whom also had class V)
Class IV	77 (4 of whom also had class V)
IV (G)	26
IV (S)	22
IV (not determined)	29
Class V	9
No biopsy	16
Patients with GFR<60 mL/min	17

BILAG, British Isles Lupus Assessment Group index.