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Turner syndrome occurs in between one in 2,000 [4] and one in 5,000 females at birth. [5] All regions of the world and cultures are affected about equally. [9] Generally people with Turner syndrome have a shorter life expectancy, mostly due to heart problems and diabetes. [7] American endocrinologist Henry Turner first described the condition ...
Progeria is a specific type of progeroid syndrome, also known as Hutchinson–Gilford syndrome or Hutchinson–Gilford progeroid syndrome (HGPS). [8] A single gene mutation is responsible for causing progeria. The affected gene, known as lamin A (LMNA), makes a protein necessary for holding the cell nucleus together.
Trisomy 21. Down syndrome (also known by the karyotype 47,XX,+21 for females and 47,XY,+21 for males) [98] is mostly caused by a failure of the 21st chromosome to separate during egg or sperm development, known as nondisjunction. [91] As a result, a sperm or egg cell is produced with an extra copy of chromosome 21; this cell thus has 24 ...
approximately 1 in 1,000 (female) Trisomy X, also known as triple X syndrome and characterized by the karyotype [note 1] 47,XXX, is a chromosome disorder in which a female has an extra copy of the X chromosome. It is relatively common and occurs in 1 in 1,000 females, but is rarely diagnosed; fewer than 10% of those with the condition know they ...
Stephanie Turner (1993 [31] – 2017 [32]) third oldest in the US with the same condition, and the first ever to give birth. Turner's two children do not have the disease. She died on March 3, 2017, at age 23. [33] Mason van Dyk (born 2013), despite being given a life expectancy of one to five days, is 10 years old as of January 2024. [34]
1 per 5,000 births [3] Trisomy 18, also known as Edwards syndrome, is a genetic disorder caused by the presence of a third copy of all or part of chromosome 18. [3] Many parts of the body are affected. [3] Babies are often born small and have heart defects. [3] Other features include a small head, small jaw, clenched fists with overlapping ...
Parsonage–Turner syndrome, also known as acute brachial neuropathy, neuralgic amyotrophy and abbreviated PTS, is a syndrome of unknown cause; although many specific risk factors have been identified (such as; post-operative, post-infectious, post-traumatic or post-vaccination), [4] the cause is still unknown. The condition manifests as a set ...
Silver–Russell syndrome, also called Silver–Russell dwarfism, is a rare congenital growth disorder. In the United States it is usually referred to as Russell–Silver syndrome, and Silver–Russell syndrome elsewhere. It is one of 200 types of dwarfism and one of five types of primordial dwarfism. Silver–Russell syndrome occurs in ...