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

Trisomy X

Trisomy X, also known as triple X syndrome and characterised by the karyotype 47,XXX, is a chromosome disorder in which a female has an extra copy of the X chromosome.

Trisomy X

Trisomy X, also known as triple X syndrome and characterised by the karyotype 47,XXX, is a chromosome disorder in which a female has an extra copy of the X chromosome.