Journal
NEUROCASE
Volume 22, Issue 3, Pages 281-284Publisher
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/13554794.2016.1186700
Keywords
Frontotemporal dementia; motoneuron disease; amyotrophic lateral sclerosis; C9ORF72
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We present a female patient aged 51 who developed behavioral disorders followed by cognitive impairment over 3 years. Neuropsychological, neuropsychiatric, and radiological features suggested a probable behavioral variant of frontotemporal dementia (bvFTD). A family history of amyotrophic lateral sclerosis and parkinsonism suggested the hexanucleotide repeat expansion G(4)C(2) in C9ORF72 . We set up a two-step genotyping algorithm for the detection of the expansion using fragment-length analysis polymerase chain reaction (PCR) and repeat-primed PCR with fluorescent primers. We confirmed the presence of an expanded G(4)C(2) allele in the patient. This represents the first documented case of bvFTD due to a C9ORF72 expansion in Argentina.
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