Table 6.

Karyotypes at diagnosis of TL

+21c only, no. (%)
Mosaic, no. (%)
Other, no. (%)
Boys   19 (73)   1* (6)   7† (27)  
Girls   12 (75)   4‡ (25)   0 (0)  
Total
 		 31 (74)
 		 5 (12)
 		 7 (16)
 
+21c only, no. (%)
Mosaic, no. (%)
Other, no. (%)
Boys   19 (73)   1* (6)   7† (27)  
Girls   12 (75)   4‡ (25)   0 (0)  
Total
 		 31 (74)
 		 5 (12)
 		 7 (16)
 

Total n = 42 (26 boys, 16 girls).

*

46XY/47XYdel(13)(q13q31)+21.

†

48XY+21c+11(2); 47XY+21c,del(16)(q21); 47XYder(14;21)(q10;q10)+21c; 47XYt(5;13)(p15;q12); 48XY+21c+21.

‡

One of these mosaics had presence of a ring chromosome 21.

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