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Table 2 Genotypes of the index patients (n = 1302)

From: Clinical and genetic characterization of a large cohort of patients with Wilson’s disease in China

Genotype

Index patients

Hepatic

Neurologic

Asymptomatic

Others

Total

1302 (100%)

307 (100%)

737 (100%)

238 (100%)

20 (100%)

Homozygotes

204 (15.67)

44 (14.33)

121 (16.42)

37 (15.55)

2 (10.00)

 R778L/R778L

125 (9.60)

24 (7.82)

74 (10.04)

26 (10.92)

1 (5.00)

 P992L/P992L

39 (3.00)

7 (2.28)

27 (3.66)

4 (1.68)

1 (5.00)

 A874V/A874V

6 (0.46)

2 (0.65)

2 (0.27)

2 (0.84)

0

 PTV/PTV

10 (0.77)

1 (0.33)

9 (1.22)

0

0

 Others

24 (1.84)

10 (3.26)

18 (2.44)

5 (2.10)

0

Heterozygotes

963 (73.96)

232 (75.57)

544 (73.81)

172 (72.27)

15 (75.00)

 PTV/PTV

24 (1.84)

9 (2.93)

12 (1.63)

3 (1.26)

0

 PAV/PAV

645 (49.54)

149 (48.53)

368 (49.93)

118 (46.58)

10 (50.0)

  R778L/P992L

90 (6.91)

16 (5.21)

54 (7.33)

18 (7.56)

2 (10.00)

  R778L/A874V

53 (4.07)

7 (2.28)

39 (5.29)

6 (2.52)

1 (5.00)

  R778L/R919G

25 (1.92)

4 (1.30)

16 (2.17)

5 (2.10)

0

  R778L/S975Y

16 (1.23)

2 (0.65)

11 (1.49)

2 (0.84)

1 (5.00)

  P992L/A874V

16 (1.23)

3 (0.98)

11 (1.49)

2 (0.84)

0

  R778L/V1106I

13 (1.00)

7 (2.28)

3 (0.41)

3 (1.26)

0

  R778L/V1216M

12 (0.92)

0

9 (1.22)

3 (1.26)

0

  Others

420 (32.26)

110 (35.83)

225 (30.53)

79 (33.19)

6 (30.00)

 PAV/PTV

294 (22.58)

74 (24.10)

164 (22.25)

51 (21.43)

5 (25.00)

  R778L/PTV

96 (7.37)

25 (8.14)

58 (7.87)

12 (5.04)

1 (5.00)

  P992L/PTV

48 (3.69)

12 (3.91)

24 (3.26)

12 (5.04)

0

  A874V/PTV

24 (1.84)

1 (0.33)

18 (2.44)

4 (1.68)

1 (5.00)

  R919G/PTV

17 (1.31)

4 (1.30)

9 (1.22)

4 (1.68)

0

  Others

109 (8.37)

32 (10.42)

55 (7.46)

19 (7.98)

3 (15.00)

One variant identified

115 (8.76)

23 (7.49)

61 (8.28)

28 (11.76)

3 (15.00)

 R778L/?

33 (2.53)

10 (3.26)

19 (2.58)

4 (1.68)

0

 P992L/?

29 (2.23)

4 (1.30)

13 (1.76)

10 (4.20)

2 (10.00)

 PTV/?

17 (1.31)

1 (0.33)

13 (1.76)

2 (0.84)

0

 A874V/?

10 (0.77)

3 (0.98)

5 (0.68)

2 (0.84)

0

 Other/?

26 (2.00)

5 (1.63)

11 (1.49)

10 (4.20)

1 (5.00)

No variant identified

20 (1.54)

8 (2.61)

11 (1.49)

1 (0.42)

0

  1. PTV, protein-truncating variants (e.g., frameshift, nonsense, splice sites); PAV, protein-altering variants (e.g., missense, in-frame deletions and insertions); ? second variants unknown. The data are presented as number and percentage of patients in each group