Table 1 Demographic and clinical features of patients with Rett Syndrome.

From: Correlation of dystonia severity and iron accumulation in Rett syndrome

No

Age

Gene mutation

Speech

RSGMS

HF

RSSS level (score)

RSBQ

Fahn–Marsden scale

UDRS

Sitting

Standing

Walking

Challenge

1

4.2

MECP2 c.880C>T, p.R294X

 + 

 + 

 + 

 + 

2

Moderate (9)

45

28

37.5

2

6.0

MECP2 c.392 C>A

 + 

 + 

 + 

 + 

 + 

8

Mild (7)

30

28

42.5

3

6.2

MECP2 c.392 C>A

 + 

 + 

 + 

 + 

 + 

8

Mild (3)

29

24.5

37.5

4

7.2

MECP2 c.502 C>T p.R168X

 + 

 + 

 + 

3

Mild (6)

20

26.5

33.5

5

8.1

MECP2 c.502 C>T p.R168X

 + 

 + 

 + 

1

Moderate (13)

38

30.5

65.5

6

8.9

MECP2 c.808 C>T p.R270X

2

Severe (16)

44

53.5

54.5

7

9.1

MECP2 c.502 C>T p.R168X

 + 

1

Moderate (10)

51

30.5

52.5

8

14.3

MECP2 c.1161 C>A

 + 

1

Moderate (13)

34

82.5

72

9

14.2

MECP2 c.502 C>T p.R168X

 + 

 + 

 + 

1

Mild (6)

31

53

66.5

10

15.6

MECP2 c.446C>A p.S149Y

 + 

 + 

 + 

7

Moderate (8)

20

13

33.5

11

18.0

MECP2 856-859del4 AAAG del, frameshift (K286fs )

 + 

5

Severe (18)

56

86.5

75

12

20.8

MECP2 frameshift insertion 38_39insTCCT (G13fs)

 + 

 + 

 + 

2

Moderate 10)

70

65

66

13

22.8

MECP2 c.763C>T p.R255X

 + 

 + 

 + 

 + 

7

Moderate (10)

49

38.5

56

14

25.3

MECP2 c.763C>T p.R255X

1

Moderate (11)

56

72.5

60.5

15

25.9

MECP2 c. 502 C>t, p.R168X

 + 

 + 

 + 

2

Moderate (12)

39

59

71

16

26.9

MECP2 mutation (losing data)

 + 

 + 

 + 

1

Moderate (12)

63

73

84.5

17

28.1

MECP2 c.763C>T p.R255X

 + 

 + 

 + 

1

Moderate (11)

38

63

73

  

Age < 10

2(29%)

6(86%)

5(71%)

5(71%)

3(43%)

 
  

Age > 10

1(10%)

9(90%)

7(70%)

7(70%)

0

 
  

Age < 10

Mean (SD)

 

3.57 (2.52)

9.14 (4.37)

36.71 (10.88)

31.64 (9.86)

46.21 (11.60)

  

Age > 10

Mean (SD)

 

2.8 (2.53)

11.1 (3.17)

45.6 (15.74)

60.60 (21.82)

65.80 (13.82)

   

p value

0.232

0.315

0.230

0.010*

0.007**

  1. Age group < 10 years (n = 7), > 10 years (n = 10); Speech +: single word, −: mute.
  2. MECP2 methyl-CpG-binding protein 2, RSGMS Rett Syndrome Gross Motor Score, HF hand function scale, RSSS Rett Syndrome Severity Score, RSBQ Rett Syndrome Behaviour Questionnaire, UDRS Unified Dystonia Rating Scale.
  3. *p < 0.05, **p < 0.001. Adjusted for multiple comparison with Benjamini–Hochberg correction.