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Table 1 Parental and chromosomal origin of all in detail reported sSMC cases, summarized according [10].

From: Small supernumerary marker chromosomes (sSMC) in humans; are there B chromosomes hidden among them

Chromosomal origin

inherited

de novo

unclear

in summary

Non-acrocentric chromosomes

1

1

41

9

51

1/5/19

0

5

1

6

2

2

15

10

27

3

3

12

15

30

4

0

15

5

20

5

1

16

9

26

6

2

12

6

20

7

2

16

6

24

8

2

59

20

81

9

5

48

10

63

10

0

12

4

16

11

1

7

3

11

12

3

187

5

195

16

3

24

11

38

17

0

19

5

24

18

3

160

10

173

19

1

23

3

27

20

2

22

7

31

X

1

19

10

30

Y

2

8

3

13

Summary

34

720

152

906

754 cases with known parental origin

i.e. 34/754 of all reported detailed characterized n-acro sSMC are familial = 4.5%

Acrocentric chromosomes

13

2

4

13

19

13/21

18

37

30

85

14

14

30

35

79

14/22

11

24

9

44

15

95

286

396

777

21

4

13

4

21

22

23

406

29

458

Acrocentric unclear origin

1

0

4

5

Summary

168

800

520

1488

968 cases with known parental origin

i.e. 168/968 of all reported detailed characterized acro sSMC are familial = 17.4%;

Overall-Summary

202

1520

672

2394

1520 cases with known parental origin

i.e. 202/1520 of all reported detailed characterized sSMC are familial = 13.3%