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Table 1 Distribution of karyotypes among Turner syndrome, Klinefelter syndrome, Triple X and Double Y syndrome

From: Changes in the cohort composition of turner syndrome and severe non-diagnosis of Klinefelter, 47,XXX and 47,XYY syndrome: a nationwide cohort study

Karyotypes Number
Turner syndrome 1156
 45,X 422
 45,X/46,XX 287
 Karyotypes containing an isochromosome: 45,X/46,I(X) and equivalents 117
 Karyotypes containing Y chromosome material: 45,X/46,XY; and equivalents 47
 Other 283
Klinefelter syndrome 1235
 47,XXY 1080
 47,XXY/46,XY 78
 47,XXY/46,XX/46,XY; 46,XY/47,XXY/48,XXXY; and equivalents 32
 Karyotypes with an autosomal aneuplodi: 48,XXY,+ 18; 48,XXY,+ 21 5
 Other 40
Triple X syndrome 197
 47,XXX 104
 47,XXX/46,XX 58
 48,XXXX; 49,XXXXX 10
 Karyotypes with an autosomal aneuplodi: 48,XXX + 18; 48,XXX + 21; and quivalents 10
 Other 15
Double Y syndrome 287
 47,XYY 206
 47,XYY/46,XY 26
 Karyotypes containing an isochromosome: 46,XY/47,XY,+I(Yq); 45,X/47,XY,+I(Y)/46,XY; and equivalents 6
 48,XXYY; 48,XYYY; and equivalents 35
 Other 14