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All patients with classic Hallervorden-Spatz syndrome and one third of those with atypical disease had PANK2 mutations. Whereas almost all mutations in patients with atypical disease led to amino acid changes, those in patients with classic disease more often resulted in predicted protein truncation. Patients with atypical disease who had PANK2 mutations were more likely to have prominent speech-related and psychiatric symptoms than patients with classic disease or mutation-negative patien ts with atypical disease. In all patients with pantothenate kinase-associated neurodegeneration, whether classic or atypical, T2-weighted magnetic resonance imaging (MRI) of the brain showed a specific pattern of hyperintensity within the hypointense med ial globus pallidus. This pattern was not seen in any patients without mutations. PANK2 mutations are associated with all cases of classic Hallervorden-Spatz syndrome and one third of cases of atypical disease. A specific MRI pattern distinguishes pati ents with PANK2 mutations. Predicted levels of pantothenate kinase 2 protein correlate with the severity of disease. |
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chromosomal abnormality chromosome 20 degenerative diseases of CNS dysarthria dystonia enzyme,defect gait disorder gene gene mutation genetic neurologic disorders globus pallidus,lesion of globus pallidus,lesion of,bilateral Hallervorden Spatz disease Hallervorden Spatz disease,late onset intellectual deficit iron,brain movement disorder movement disorder,extrapyramidal MRI MRI,abnormal MRI,eye of tiger sign MRI,paramagnetic effect neurologic signs palilalia PANK2 mutation Parkinsonism syndrome pigmentary retinopathy postural abnormality psychiatric disorder psychiatric problems in neurologic disorders retinopathy review article rigidity
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