Karyotypes performed in young people attending GIDS England and Wales, and from Scotland and Northern Ireland (2009–2015), and frequencies of aneuploidy10 11
| 46,XX | 269 | ||
| 46,XY | 177 | ||
| Total | 446 | ||
| New sex chromosome aneuploidies | 47,XYY | GIDS: 1 in 446 | Population: 1 in 426–523 |
| New autosomal aneuploidies | 46XX, t(7;13) (p21;q31)mos 47,XX,+mar[10]/46,XX[20] | GIDS: 1 in 223 | Population: 1 in 138–164 |
GIDS, Gender Identity Development Service.