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The Principles of Clinical Cytogenetics - Extra Materials - Springer

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135<br />

Table 1<br />

Parental and Meiotic/Mitotic Origin <strong>of</strong> Autosomal Trisomies Determined by Molecular Studies (Number <strong>of</strong> Cases)<br />

Maternal Paternal<br />

Trisomy MI MII MI or MII Mitotic Total a MI MII MI or MII Mitotic Total a Reference<br />

2 4 1 6 1 13 5 5 26<br />

7 2 3 1 6 12 2 2<br />

13 4 17 21 1 1 1 3 20<br />

14 3 4 2 9 2 2 20<br />

15 21 3 3 27 5 5 16 (UPD study)<br />

10 10 2 2 18 (UPD study)<br />

17 2 10 29 4 1 5 20,26<br />

16 56 6 62 0 21<br />

18 11 17 56 1 6 24<br />

17 5 17<br />

16 >35 3 61 2 2 22<br />

21 9 1 22 3 13<br />

91 6 14<br />

128 38 188 2 7 9 15<br />

7 15 8 36 19 (paternal study only)<br />

174 58 79 311 9 15 8 32 20<br />

62 81 10 13 23<br />

67 22 97 4 4 10 25<br />

22 20 1 15 37 1 1 20,26<br />

a Total numbers might not add up because not all origins <strong>of</strong> error can be determined.<br />

Autosomal Aneuploidy 135

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