To date, there have been approximately 200 reported cases of<unk>  and SMA-PME in the literature. The disorders are ultra-rare and estimated to occur in fewer than one per million.
Farber disease
Keshan disease
Akureyri disease
Batten disease
Borna disease
Menkes disease
Bosch-Boonstra-Schaaf optic atrophy syndrome
Karak syndrome