| A rare genetic neurodegenerative disorder characterized by progressive psychomotor and cognitive regression (manifesting with gait ataxia, spasticity, loss of language, mild to severe intellectual disability, pyramidal and extrapyramidal signs and, frequently, development of tetraplegia or tetraparesis) associated with variable degrees of lipodystrophy, hepatomegaly, hypertriglyceridemia and muscular hypertrophy. Hyperactivity, tremor and development of seizures may also be associated. Caused by homozygous or compound heterozygous mutation in the BSCL2 gene on chromosome 11q13. |