A Case of Systemic Lupus Erythematosus and Antineutrophil Cytoplasmic Antibodies-Associated Vasculitis Overlap Syndrome

Table 1

Laboratory results of this case.

Urinalysis			Biochemistry/immunology
Urine protein		(2+)	TP	7.5	g/dL	FANA	1 : 320 (speckled)
Occult blood		(3+)	Alb	3.2	g/dL	Anti-dsDNA Ab (ELISA)	18.2	U/mL
Urine WBC		10–19/HF	BUN	31	mg/dL	Anti-dsDNA Ab (RIA)	9	U/mL
Urine RBC (with dysmorphic RBC)		>100/HF	Creatinine	2.3	mg/dL	Anti-Sm Ab	0.5	U/mL
Casts (red blood cell, granular, waxy)		(+)	eGFR	20.8	mL/min/1.73 m^2	Anti-RNP Ab	<7.0	U/mL
U-TP/Cre		1.7 g/gCr	Na	141	mmol/L	Anti-SS-A Ab	>240	U/mL
Complete blood count			K	4.3	mmol/L	Anti-SS-B Ab	81.8	U/mL
WBC	3,100	/μL	Cl	109	mmol/L	Anti-CCP-Ab	<0.6	U/mL
Lymphocyte	1,080	/μL	LDH	199	U/L	Rheumatoid factor	<3	IU/mL
RBC	2.89 × 10^6	/μL	Nt-proBNP	460	pg/mL	MPO-ANCA Ab	1290	U/mL
Hemoglobin	8.5	g/dL	KL-6	259.6	U/mL	PR3-ANCA Ab	1.1	U/mL
Hematocrit	25.2	%	Haptoglobin	110	ng/mL	Anti-GBM Ab	<2.0	U/mL
MCV	87.2	fl	Erythropoietin	5.3	IU/mL	Cryoglobulin	(—)
Platelet	186 × 10^3	/μL	TSH	7.11	μIU/mL	Anti-CL.β2 GPI Ab	<1.2	U/mL
Reticulocyte	3.5	‰	FT3	3.1	pg/mL	C3	46.2	mg/dL
ESR	59	mm/hr	FT4	1.2	ng/dL	C4	22.5	mg/dL
CRP	0.35	mg/dL	Anti-TPO Ab	29	IU/mL	CH50	27	U/mL
			Anti-thyroglobulin Ab	222	IU/mL	C1q-IC	2.2	μg/mL