NCIt related terms : Spongy Degeneration of Central Nervous System;
NCIt definition : A disorder that belongs in the group of leukodystrophies. It is caused by mutations
in the ASPA gene which is responsible for the production of the enzyme aspartoacylase.
It is characterized by spongy degeneration of the white matter of the brain. Signs
and symptoms appear in infancy and include mental retardation, loss of motor skills,
abnormal muscle tone, feeding difficulties and a very large head.;
Alternative definition : NICHD: Spongy degeneration of central nervous system, spongy degeneration of white
matter a rare hereditary form of leukodystrophy of early onset in which widespread
demyelination and vacuolation of cerebral white matter gives it a spongy appearance;
there is mental retardation, megalocephaly, atony of neck muscles, limb spasticity,
and blindness, with death in infancy.;