A neurodegenerative disease characterized by loss of motor and cognitive skills between ages 2 and 7 years with progressive cerebral and cerebellar atrophy, resulting in the inability to walk, absence of language, and profound intellectual disability, that has_material_basis_in heterozygous mutation in the UBTF gene on chromosome 17q21.31.

Reference
DiseaseOntology: childhood-onset neurodegeneration with brain atrophy