_:vb50937964 . _:vb50937964 . _:vb50937964 . _:vb50937964 . _:vb50937964 . _:vb50937964 "url:https://www.ncbi.nlm.nih.gov/pubmed/20970105"^^ . _:vb50937964 "A spastic ataxia that is characterized by cerebellar ataxia, spasticity, dysarthria and optic atrophy, has_material_basis_in homozygous mutation in the MTPAP gene on chromosome 10p11."^^ . _:vb50937964 . _:vb50937964 "url:https://www.omim.org/entry/613672"^^ .