Skip to main content

Table 2 Abnormal karyotype distribution

From: Cytogenetic analysis of 3387 umbilical cord blood in pregnant women at high risk for chromosomal abnormalities

Abnormal karyotypes

Cases(n)

(%)

Numerical abnormalities

119

65.38

 Trisomy 21

59

32.42

 Trisomy 18

17

9.34

 Trisomy 13

2

1.10

 45,X

2

1.10

 47,XXX

5

2.75

 47,XXY

7

3.85

 47,XYY

6

3.30

 48,XXXX

1

0.55

 Mosaic

19

10.44

Structural abnormalities

64

35.16

 Translocation

15

8.24

 Inversion

26

14.29

Derivative chromosome

7

3.85

 Deletion

5

2.75

 Duplication

1

0.55

 Additio

5

2.75

 Marker chromosome

3

1.65

 Others

2

1.10

 Total

182

100.00

Back to article page

Molecular Cytogenetics

ISSN: 1755-8166