A neuronal ceroid lipofuscinosis that is characterized by late-infantile onset of symptoms (seizures or motor impairment followed by mental regression, myoclonus, speech impairment, loss of vision, and personality disorders) and has_material_basis_in homozygous or compound heterozygous mutation in the MFSD8 gene on chromosome 4q28. [ http://purl.obolibrary.org/obo/ECO_0007645 url:https://www.ncbi.nlm.nih.gov/pubmed/17564970 ]
Synonyms: CLN7