Table 1.

Number of patients from the LUNAR trial treated with rituximab that achieved the three different definitions of B cell depletion at week 52 and 78 and maximum time to depletion in days

Definition of B Cell Depletion	Patients Who Achieved Depletion by Week 52, n (% of Total)	Patients Who Achieved Depletion by Week 78, n (% of Total)	Maximum Time to Achievement of Depletion in Days
CD19<20 cells/μl	68 (100)	68 (100)	86
CD19<5 cells/μl	68 (100)	68 (100)	182
CD19=0 cells/μl	53 (78)	53 (78)	365

LUNAR, the Lupus Nephritis Assessment with Rituximab study.