[Clinical characteristics of Wilson's disease with onset of acute liver failure in 19 children].

To analyze the clinical characteristics of Wilson's disease (WD) with onset of acute liver failure (ALF) in children. Clinical data of 19 children diagnosed with WD presented with ALF in Xi'an Children's Hospital from January 2016 to April 2021 were retrospectively analyzed, including general condition, clinical manifestation, laboratory examination, and gene detection. The children were divided into the death group and survival group according to the clinical outcome. The children who had hepatic WD with non-ALF onset during the same period were selected as the control. The general conditions and laboratory indexes were compared between death group and survival group, ALF group and non-ALF group. T-test, Mann Whitney test or χ test were used to compare the differences between the two groups. Of the 19 WD children with ALF onset, 10 were females and 9 were males. The age of admission was (10.1±2.6) years and time to onset of first visit was 9 (4, 15) days. Among the WD children with ALF onset, 4 children were lost to follow-up, 5 cases death (death group) and 10 cases survived (survival group). The ceruloplasmin in the death group was higher than that in the survival group (0.078 (0.055, 0.105) 0.033 (0.027, 0.058) g/L, =-2.33, =0.020). There were 95 children who had hepatic WD with non-ALF onset. The WD patients with ALF onset were older at admission (9.9 (8.0, 11.1) 5.4 (3.7, 6.9) years, =-5.25, <0.001), had higher ceruloplasmin (0.060 (0.030, 0.078) 0.024 (0.006, 0.060) g/L, =-3.11, =0.002), 24 h urinary copper (674 (205, 1 803) . 149 (108, 206) μg, =-4.25, <0.001), and positive rate of K-F ring [17/19 7%(7/95), χ=50.17, <0.001] while shorter onset time at initial visit (0.3 (0.1, 0.5) 1.0 (0.7, 6.0) months, =-4.28, <0.001). There was no gender difference between the two groups [9/19 61%(58/95), χ=1.22, =0.269]. Of the 19 WD children with ALF onset, 13 had the ATP7B gene tested, and 15 reported variants were detected. The main variations were c.2333G>T (p. Arg778Leu), c.2621C>T (p. Ala874Val) and c.2975C>T (p. Pro992Leu). The allele frequencies were 6/26(23%), 4/26(15%) and 3/26(12%), respectively. Children of WD onset with ALF are school-aged and above. They have an acute onset, a short course of the disease, and poor prognosis. The positive rate of K-F ring, ceruloplasmin and urinary copper are higher than those of the hepatic WD children with non-ALF onset.