Uniprot Description A disorder characterized by an abnormally small cerebellum and brainstem, and progressive microcephaly from birth combined with extrapyramidal dyskinesia. Severe chorea occurs and epilepsy is frequent. There are no signs of spinal cord anterior horn cells degeneration.

Disease Ontology Description A severe pontocerebellar hypoplasia that is characterized by progressive microcephaly, chorea, epilepsy and hyperreflexia, has_material_basis_in autosomal recessive inheritance of mutation in the TSEN54 gene.