_:vb50937963 . _:vb50937963 . . _:vb50937963 . "disease_ontology"^^ . "DOID:0050943"^^ . . "lschriml"^^ . "2015-09-18T14:13:49Z"^^ . "OMIM:613672"^^ . _:vb50937963 . _:vb50937963 . . . "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."^^ . "spastic ataxia 4"^^ .