<unk><unk>  has an incidence of one in 36,000 births. There is over 90% penetrance by the age of 65. Age at diagnosis varies from infancy to age 60–70 years, with an average patient age at clinical diagnosis of 26 years.
Von Hippel–Lindau disease
Mowat–Wilson syndrome
Neurofibromatosis type 4
Hurler–Scheie syndrome
Lesch–Nyhan syndrome
Neurofibromatosis type II
Neurofibromatosis type I
Stratton Parker syndrome