hereditary spastic paraplegia 11 (Monarch Disease Ontology id MONDO_0011445) is any hereditary spastic paraplegia in which the cause of the disease is a mutation in the SPG11 gene. Also known as: HSP-TCC, Nakamura-Osame syndrome, SPG11, SPG11 hereditary spastic paraplegia, autosomal recessive spastic paraplegia 11, autosomal recessive spastic paraplegia complicated with thin corpus callosum, autosomal recessive spastic paraplegia type 11, autosomal recessive spastic paraplegia with mental impairment and thin corpus callosum.