Table 2 Prevalence structural chromosome abnormalities and sequence variants for specific diagnoses.

From: The prevalence of genetic diagnoses in fetuses with severe congenital heart defects

 

Genetic diagnosis

Uncertain significance

 

Yes

No

OR

95% CI

p

 

Interrupted aortic archb

10

71.4%

4

28.6%

13.7

4.22–44.57

<0.001a

0

0.0%

 isolated

8

66.7%

4

33.3%

   

0

0.0%

Pulmonary atresia with VSD

5

41.7%

7

58.3%

3.7

1.16–11.92

0.03a

0

0.0%

 isolated

1

16.7%

5

83.3%

   

0

0.0%

AVSD, unbalanced

3

33.3%

6

66.7%

2.6

0.63–10.38

0.18

0

0.0%

 isolated

1

20.0%

4

80.0%

   

0

0.0%

AVSD, balanced

8

28.6%

19

67.9%

2.2

0.94–5.17

0.11

1

3.6%

 isolated

4

21.1%

14

73.7%

   

1

5.3%

Isolated right aortic arch

2

28.6%

5

71.4%

2.0

0.39–10.60

0.33

0

0.0%

 isolated

1

16.7%

5

83.3%

   

0

0.0%

Truncus arteriosus

4

25.0%

11

68.8%

1.9

0.58–5.95

0.29

1

6.3%

 isolated

4

36.4%

7

63.6%

   

0

0.0%

Tetralogy of Fallot

12

21.1%

43

75.4%

1.5

0.74–2.85

0.28

2

3.5%

 isolated

8

17.0%

38

80.9%

   

1

2.1%

Valvular aortic stenosis

5

20.0%

20

80.0%

1.3

0.47–3.46

0.59

0

0.0%

 isolated

2

10.0%

18

90.0%

   

0

0.0%

Ventricular septal defect

19

17.8%

84

78.5%

1.2

0.68–2.01

0.58

4

3.7%

 isolated

6

8.5%

63

88.7%

   

2

2.8%

Left isomerism

2

16.7%

10

83.3%

1.0

0.22–4.65

1.00

0

0.0%

 isolated

1

25.0%

3

75.0%

   

0

0.0%

DORV-Fallot type

5

16.7%

23

76.7%

1.1

0.41–2.95

0.80

2

6.7%

 isolated

2

12.5%

14

87.5%

   

0

0.0%

DORV-Taussig Bing

3

13.0%

18

78.3%

0.8

0.24–2.88

1.00

2

8.7%

 isolated

2

10.5%

16

84.2%

   

1

5.3%

Hypoplastic aortic arch

1

12.5%

6

75.0%

0.8

0.10–7.02

1.00

1

12.5%

 isolated

1

20.0%

4

66.7%

   

1

16.7%

Hypoplastic left heart syndrome

6

11.5%

44

84.6%

0.7

0.28–1.61

0.36

2

3.8%

 isolated

5

11.6%

38

84.4%

   

2

4.4%

Aortic coarctation

5

7.7%

55

84.6%

0.4

0.17–1.10

0.07

5

7.7%

 isolated

3

5.8%

49

86.0%

   

5

8.8%

Valvular pulmonary stenosis

2

6.7%

22

73.3%

0.4

0.10–1.93

0.40

6

20.0%

 isolated

2

8.7%

21

77.8%

   

4

14.8%

Hypoplastic right heart syndrome

1

6.7%

12

80.0%

0.4

0.05–3.21

0.71

2

13.3%

 isolated

0

0.0%

10

83.3%

   

2

16.7%

TGA (with significant VSD or PS)

1

5.0%

18

90.0%

0.3

0.04–2.06

0.34

1

5.0%

 isolated

1

5.9%

16

94.1%

   

0

0.0%

TGA (simple)

2

4.3%

44

93.6%

0.2

0.05–0.90

0.02a

1

2.1%

 isolated

2

4.4%

43

93.5%

   

1

2.2%

Tricuspid valve atresia

1

4.0%

23

92.0%

0.2

0.03–1.58

0.16

1

4.0%

 isolated

1

4.8%

20

90.9%

   

1

4.5%

Double inlet left ventricle

0

0.0%

6

85.7%

n/a

 

0.60

1

14.3%

 isolated

0

0.0%

6

85.7%

   

1

14.3%

TAPVC

0

0.0%

10

90.9%

n/a

 

0.38

1

9.1%

 isolated

0

0.0%

8

88.9%

   

1

11.1%

 Miscellaneous

14

15.9%

68

77.3%

   

6

6.8%

Total

111

15.7%

558

78.8%

   

39

5.5%

  1. Data are given as n (%).
  2. aP-value < 0.05 was considered statistically significant.
  3. b8/10 with a pathogenic variant was diagnosed with 22q11 deletion syndrome.
  4. VSD ventricular septal defect, AVSD atrioventricular septal defect, DORV double outlet right ventricle, TGA transposition of the great arteries, VUS variant of uncertain significance, PS pulmonary valve stenosis, TAPVC total anomalous pulmonary vein connection.