Impact of C4, C4A and C4B gene copy number variation in the susceptibility, phenotype and progression of systemic lupus erythematosus

Table 1 Clinical characteristics of systemic lupus erythematosus patients (n = 427)

Clinical characteristics/organ involvement	n (%)
Cutaneous manifestations	394 (92.3)
Oral ulcers	64 (21.3)^a
Arthritis or arthralgia	373 (87.4)
Kidney involvement	246 (57.6)
Hematologic manifestations	294 (68.8)
Serositis	111 (26.0)
CNS involvement	95 (22.2)
Disease duration in years (median/min – max)	9/0–53
SLICC-DI (median/min – max)	1/0–7
SLEDAI (median/min – max)	0/0–14

^aInformation available only for 300 patients
CNS central nervous system, SLICC-DI Systemic Lupus International Collaborating Clinics - Damage Index, SLEDAI Systemic Lupus Erythematosus Disease Activity Index

ISSN: 2523-3106