XXXYY syndrome, also known as 49,XXXYY, is a chromosomal disorder in which a male has three copies of the X chromosome and two copies of the Y chromosome...

Down syndrome (United States) or Down's syndrome (United Kingdom and other English-speaking nations), also known as trisomy 21, is a genetic disorder...

Turner syndrome (TS), also known as 45,X, or 45,X0, is a genetic disorder in which the patient's cells have only one X chromosome or are partially missing...

as limb anomalies, syndromes involving multiple systems, and Down syndrome. Recent studies have concluded that 5-9% of Down syndrome cases are due to paternal...

PMID 21342258. Alekri A, Busehail M, Rhayel N, Almosawi SM (2023). "XXXYY variant of Klinefelter syndrome: A case report". Int J Health Sci (Qassim). 17 (3): 39–45...

risk of miscarriage, including diabetes, endometriosis, polycystic ovary syndrome (PCOS), hypothyroidism, certain infectious diseases, and autoimmune diseases...

Fryns-Aftimos syndrome (also known as Baraitser-Winter syndrome 1, or BWS1) is a rare chromosomal condition and is associated with pachygyria, severe...

nonhomologous chromosomes). Polysomy is found in many diseases, including Down syndrome in humans where affected individuals possess three copies (trisomy) of...

syndrome (45,X) Trisomies/tetrasomies, other karyotypes/mosaics Klinefelter syndrome (47,XXY) XXYY syndrome (48,XXYY) XXXY syndrome (48,XXXY) XXXYY syndrome...

found in Down syndrome, affecting 1 in 800 births. Trisomy 18 (Edwards syndrome) affects 1 in 6,000 births, and trisomy 13 (Patau syndrome) affects 1 in...