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Table 1 Cases with unique complex sSMC reported in the literature.

From: Complex rearranged small supernumerary marker chromosomes (sSMC), three new cases; evidence for an underestimated entity?

Case

Case acc. to [10]

GTG-karyotype

sSMC acc. to FISH

abnormal clinical outcome

de novo

1

07-U-1

47,XX,+mar [100%]

der(7)t(X;5;7)(p22.1;q35;p13q21)

+

2

13/21-U27

47,XY,+mar [100%]

der(13 or 21)t(13 or 21;18)(13 or 21pter->13 or 21q11::18p11.21->18pter)

+

3

13/21-U-8

47,XX,+mar [100%]

der(13 or 21)t(13 or 21;18)(q11;p11.2)

?

4

14-O-q11.2/1-1 15-O-q11.1/4-1

47,XY,+mar [100%]

dic(14;15)(14pter->14q11.2::15q11.1->15pter)

-

5

15-CW-3

47,XX,+mar [100%]

der(15)t(15;?)(q24;?)

+

6

15-U-6 22-U-4

47,XY,+mar [100%]

dic(15;22)(q11.1;q22.1)

?

7

15-U-10

47,XY,+mar [100%]

der(15)t(Y;15)(q12;q22)

?

8

17-W-p13.3/1-1

47,XYqs,+mar [100%]

der(17)t(17;acro)(q11;p11.2)

+

9

22-U-18

47,XY,+mar [100%]

der(22)t(12;22)(p12;q11.2-12)

+

10*

22-Wces-5-101

47,XX,+mar [100%]

dic(13 or 21;22)(13 or 21pter->13 or21q11::22q11.1~11.2->22q11.21~11.22::22q11.21~11.22->22pter)

+

Unclear origin

11

15-CO-1 0Y-CO-2

47,XX,+mar [100%]

dic(Y;15) presence of 2 alpha-cepY and cep15 signals; PCR prove of Yq11 euchromatic region (AZF1); absence of SRY region

-

12

21-O-q11.1/1-1 22-O-q11.1/3-1

46,tROB(21;22),+mar [100%]

der(21)t(21;22)(q11.1;p11.2)

-

sSMC from mother

13*

18-U-10

47,XY,+mar [100%]

der(18)t(8;18)(8p23.2~23.1;18q11.1)

+

14

13/21-O-q10/4-1 14-O-q10/2-1

47,XX,+mar [87%]/46,XX [13%]

dic(13 or 21;14)(q10;q10)

-

15

13/21-O-q10/5-1 15-O-q10/4-1

47,XX,+mar [100%]

dic(13 or 21;15)(q10;q10)

-

16*

13/21-U-28

47,XX,+mar [100%]

der(13 or 21)t(13 or 21;18)(13 or 21pter->13 or 21q11::18p11.21->18pter)

+

Parental balanced translocation

17

12-U-6

47,+mar [100%]

der(12)t(4;12)(p16;q11) mat

+

18

13-U-8

47,XY,+mar [100%]

der(13)t(8;13)(p23.2;q12.2) mat

+

19

15-O-q11.2/5-1

47,XY,+mar [100%]

der(15)t(9;15)(p24;q11.2) mat

-

20

15-U-15

47,XX,+mar [100%]

der(15)t(15;16)(q13;p13.2) mat

+

21

18-CW-2

47,XX,+mar [100%]

der(18)t(18;21 or 22) mat der(18)t(18;21 or 22) pat

+

22

22-U-11

47,XY,+mar [100%]

der(22)t(8;22)(q24.1;q11.2) pat

+

  1. All cases with unique complex sSMC reported in the literature according to [10]; the case numbering scheme is explained also in Ref. 10. GTG-karyotype, sSMC as characterized after FISH and information on the clinical outcome are provided. The three new cases reported here are marked by asterisks.