Table 1.

Demographic characteristics of patients with WD.

Parameter			Case (n)
Male/Female			764/514
Age at manifestation	Range	1.75~64.75	1,278
(years)	Mean ± SD	17.00 ± 9.33
Serum ceruloplasmin	Range	0.001~0.238	1,278
(g/L)	Median	0.029
	Quantile (0.25~0.75)	0.016~0.052
Kayser-Fleischer ring	Negative		180
	Positive		1,098
Onset form	Hepatic		307
	Neurologic		728
	Asymptomatic		218
	Others		25
ATP7B mutation	Homozygotes		201
	Heterozygotes		946
	One variant identified		112
	No variant identified		19