期刊
REVISTA MEDICA DE CHILE
卷 145, 期 7, 页码 896-900出版社
SOC MEDICA SANTIAGO
DOI: 10.4067/s0034-98872017000700896
关键词
Frontotemporal Dementia; Motor Neuron Disease; Parkinsonian Disorders
Frontotemporal Dementia (FTD) and Motor Neuron Disease (MND) may share similar pathogenic mechanisms. An abnormal hexanucleotide expansion in C9orf72 gene is the most common genetic abnormality of these conditions and explains their concurrence in the same family. We report a 77-year-old female presenting with non-fluent aphasia leading to mutism and a mild Parkinsonism. A magnetic resonance imaging showed a severe atrophy of frontal and temporal lobes. Several family members of the patient suffered of atypical Parkinsonism, lateral amyotrophic sclerosis and dementia. We identified an abnormal hexanucleotide expansion in the C9orf72 gene in the proband. To the extent of our knowledge, this is the first time that this diagnosis is confirmed in our country. The knowledge of the genetic basis of neurodegenerative disorders improves diagnosis and opens expectatives for future treatments of these disabling conditions.
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