No cure for<unk>  has been developed. Outcomes are variable: people with the most severe form of the disease do not usually survive to adolescence, although with milder forms, survival into adulthood is possible.
Pelizaeus–Merzbacher disease
Axenfeld–Rieger syndrome
Kufor–Rakeb syndrome
Zunich–Kaye syndrome
Letterer–Siwe disease
Cornelia de Lange syndrome
Sturge–Weber syndrome
Hurler–Scheie syndrome