Hypomyelinating Leukodystrophy 7, also known as leukoencephalopathy-ataxia-hypodontia-hypomyelination syndrome, is related to leukodystrophy, hypomyelinating, 7, with or without oligodontia and/or hypogonadotropic hypogonadism and hypomyelinating leukodystrophy, and has symptoms including ataxia, cerebellar ataxia and muscle spasticity. An important gene associated with Hypomyelinating Leukodystrophy 7 is POLR3A (RNA Polymerase III Subunit A), and among its related pathways/superpathways are Cytosolic sensors of pathogen-associated DNA and RNA Polymerase III Transcription Initiation. Affiliated tissues include eye and brain, and related phenotypes are spasticity and hyperreflexia