disease has feature Azoospermia epilepsy Klinefelter syndrome https://www.malacards.org/card/hypogonadotropic_hypogonadism 47,XXY syndrome EFO:1001006 XXY syndrome NCIT:C34752 UMLS:C0022735 Klinefelter syndrome hypogonadotropic hypogonadism NANDO:2200386 XXY syndrome (Klinefelter syndrome) MedDRA:10023463 DOID:1921 A sex chromosome disorder caused by the presence of an extra X chromosome in the male karyotype. Affected individuals are infertile and have a small penis and testes. They tend to have tall stature and long legs and may have difficulties with speech and language development. Gynecomastia may be present. SCTID:405769009 Klinefelter's syndrome, XXY icd11.foundation:1937385304 MESH:D007713 MONDO:0006823 Klinefelter's syndrome MEDGEN:44033 sex chromosome disorder of sex development chromosome X disorder trisomy