Almost all reported cases of<unk>  have been in girls. The few boys that have been identified with<unk>  have proved to have 47 chromosomes including an XXY sex chromosome complement, a condition called Klinefelter syndrome. All cases of<unk>  are thought to be due to new mutations. No person with<unk>  is known to have transmitted the X-linked gene responsible for the syndrome to the next generation.
Aicardi syndrome
Brugada syndrome
Pacak–Zhuang syndrome
Long QT syndrome
Sudden arrhythmic death syndrome
Wooden chest syndrome
Libman–Sacks endocarditis
Familial aortic dissection