Term Name:	Klinefelter syndrome
Synonyms:	47, XXY, Hypogonadotropic Hypogonadism, Klinefelter's syndrome, XXY syndrome, XXY trisomy
Definition:	A chromosomal duplication syndrome that is characterized by infertility and that has_material_basis_in an extra X chromosome in cells in men.
Ontology:	Human Disease [DOID:1921]   ( DOID:1921 )