Uniprot Description A neurodegenerative disorder characterized by infantile-onset of macrocephaly and mildly delayed motor development associated with white-matter abnormalities on brain magnetic resonance imaging. The phenotype is milder that MLC2A, with better preserved cerebellar white matter and no subcortical cysts outside the temporal region. On follow-up, patients show normal or almost normal motor function. Some patients have normal intelligence, whereas others have a significant cognitive deficiency.

Disease Ontology Description A megalencephalic leukoencephalopathy with subcortical cysts characterized by infantile-onset macrocephaly and mildly delayed motor development associated with white matter abnormalities that improve with age, and sometimes mental retardation that has_material_basis_in heterozygous mutation in HEPACAM on chromosome 11q24.