Table 1.

Overview of patients with lupus nephritis included in the study

Patient no.	Age at biopsy/sex	median age with [IQR] in females	**BLK SNP rs2736340 (C/T)	SLE nephritis	positive cells/0.01 mm²
					CD20	CD43	CD20/CD43
1	42/F		non-risk	Class III	25.1	7.9	4.3
2	30/F	*40.83	non-risk	Class IV(G)	3.2	1.1	0.7
3	35/F	[33.8 – 45.3],	non-risk	Class IV(S)	2.8	22.3	4.3
#4	41/F	n=6	non-risk	Class IV(G)	0.1	1.5	0.2
5	55/F		non-risk	Class IV(G)	0.0	3.8	1.6
#6	42/F		non-risk	Class III	0.1	2.6	1.7
7	21/F		risk	Class IV(G)	0.3	4.9	0.4
8	16/F	*25.83	risk	Class III	0.0	0.6	0.0
9	39/F	[19.8 – 33.0],	risk	Class IV(S)	0.1	2.4	0.1
10	31/F	n=6	risk	Class IV(G)	0.1	1.3	0.0
11	22/F		risk	Class IV(G)	0.2	1.4	0.3
#12	26/F		risk	Class III	0.0	1.2	4.3
#13	59/M		risk	Class IV(G)/V	0.3	10.4	1.1

^*p value = 0.020;

^**non-risk: homozygous for CC; risk: homozygous for TT;

^#Immunohistofluorescence staining data is shown in Figure 6.