Serum-negative Sjogren's syndrome with minimal lesion nephropathy as the initial presentation: A case report

Table 1 Results of laboratory tests performed during the patient’s hospitalization

Items	Before treatment	After treatment	Reference range
WBC (× 109/L)	4.64	6.35	3.5-9.5
HB (g/L)	126	109	130-175
PLT (×109/L)	205	124	100-300
IgG (g/L)	8.35	6.05	7.51-15.6
C3 (g/L)	0.76	0.78	0.79-1.52
C4 (g/L)	0.176	0.179	0.16-0.38
ALT (U/L)	19	16	7-40
AST (U/L)	57	22	13-35
Alb (g/L)	24.3	41.5	40-55
Urinary occult blood test	+++	-	-
24-hour urinary protein quantity (g/24 h)	3.8	0.091	0-0.15
RF (IU/mL)	< 20	< 20	20
Anti-RNP	-	-	-
Anti-dsDNA	-	-	-
Anti-Sm	-	-	-
Anti-SCL-70	-	-	-
Anti-SSA	-	-	-
Anti-Jo-1	-	-	-
Anti-SSB	-	-	-
Anti-A-fordrin	-	-	-
Anti-ACA	-	-	-
Anti-RO-52	-	-	-
AnuA	-	-	-
AHA	-	-	-
ARPA/Rib-P	-	-	-
ANA (nuclear particle type)	1:1000	1:1000	-

WBC: White blood cell; HB: Hemoglobin; PLT: Platelets; IgG: Immunoglobulin G; C3/4: Complement 3/4; ALT: Alanine transaminase; AST: Aspartate aminotransferase; Alb: Albumin; BUN: Blood urea nitrogen; RF: Rheumatoid factor; anti-dsDNA: anti-double-stranded DNA antibody; anti-ACA: anti-centromere antibodies; anti--A-fordrin: anti-a Fordrin protein; anti-SSA and anti-SSB, anti- Sjogren’s-syndrome-related antigen A/B; AnuA, anti-nucleosome antibody; AHA: anti-histone antibody; ANA: anti-nuclear antibody.