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Table 2 Pathogenic DNA variants

From: Complete exon sequencing of all known Usher syndrome genes greatly improves molecular diagnosis

Gene

Nucleotide change

Exon

Amino acid change

Frequency in

USH alleles

(×/108)

Frequency in

control alleles

Patient origin

& reference

MYO7A

      
 

223delG

4

D75fsX31

2

 

Australia, Italy, France [78]

 

397dupC

5

H133fsX7

2

 

This study

 

490A>T

6

K164X

2

 

This study

 

592G>A

6

A198T + splice defect

1

0/306

Algeria [27]

 

1556G>A

14

G519D/splice defect

1

0/306

USA, France [63]

 

1690+1G>A

14

Splice defect

1

 

This study

 

1996C>T

17

R666X

1

 

Great Britain, Denmark [62]

 

2005C>T

17

R669X

1

 

USA [24]

 

2283-1G>T

20

Splice defect

2

 

Algeria [27]

 

2914C>T

24

R972X

2

 

Pakistan [79]

 

3594C>A

28

C1198X

1

 

This study

 

3904delT

30

Y1302fsX97

2

 

This study

 

5392C>T

39

Q1798X

2

 

Denmark, German, Great Britain/France [62]

 

5749G>T

42

E1917X

2

 

unknown [80]

 

6025delG

44

A2009fsX32

1

 

Spain [63]

 

6070C>T

45

R2024X

1

 

unknown [80]

USH1C

      
 

238_239dupC

3

R80fsX69

3

 

Pakistan, Europe, Guinea [4]

CDH23

      
 

6050-9G>A

46

Splice defect

1

 

Germany [54]

 

6404_6405delAG

47

E2135fsX31

1

 

This study

PCDH15

      
 

2971C>T

22

R991X

2

 

France [27]

USH1G

      
 

84dupC

1

D29fsX29

2

 

This study

 

113G>A

1

W38X

1

 

USA [58]

USH2A

      
 

920_923dupGCCA

6

H308fsX16

1

 

Denmark [81]

 

2299delG

13

E767fsX21

4

 

Europe, USA, Africa, China [10]

 

3920C>G

18

S1307X

1

 

France [82]

 

4030_4037delATGGCTGG

18

M1344fsX42

1

 

This study

 

4474G>T

21

E1492X

1

 

Spain [83]

 

5189_5199delATATGTTTCAT

26

Y1730fsX6

1

 

This study

 

5776+1G>A

28

Splice defect

1

 

Norway [28]

 

7522delT

40

R2509fsX19

1

 

This study

 

8970_8971delCA

45

T2991fsX61

2

 

This study

 

10586-1G>C

54

Splice defect

1

 

This study

 

10684G>T

54

E3562X

1

 

Denmark, Norway [28]

 

11864G>A

61

W3955X

1

 

Netherlands [84]

 

12381_12382delCT

63

Y4128fsX24

1

 

This study

 

15089C>A

70

S5030X

1

 

France [66]

VLGR1

      
 

333_334delTT

3

F112fsX29

1

 

This study

 

1563dupT

9

P522fsX8

1

 

This study

 

2258_2270delAAGTGCTGAAATC

12

Q753fsX8

1

 

This study

 

12552_12553delGG

62

E4186fsX17

1

 

This study

 

12961G>T

64

E4321X

1

 

This study

 

17668_17669delAT

82

M5890fsX10

1

 

This study

WHRN

      
 

737delC

2

P246fsX13

2

 

This study

  1. Novel mutations are in bold.