<unk>  is a rare genetic disorder.  It is a type of leukodystrophy and is usually fatal within the first few years.
It presents within the first few weeks of life.
Aicardi-Goutieres syndrome
Jaffe-Campanacci syndrome
Galloway Mowat syndrome
Kashani-Strom-Utley syndrome
Rotor syndrome
Townes-Brocks syndrome
Kearns–Sayre syndrome
Buschke-Ollendorff syndrome