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Descriptions of motor neuron disease (MND) documented more than a century ago remain instantly recognisable to the physician. The muscle weakness, typically with signs of upper and lower motor neuron dysfunction, is uniquely relentless. Over the last 30 years, a wider cerebral pathology has emerged, despite the lack of overt cognitive impairment in the majority of patients. From the initial linkage of a small number of cases to mutations in SOD1, diverse cellular pathways have been implicated in pathogenesis. An increasingly complex clinical heterogeneity has emerged around a significant variability in survival. Defining a cellular signature of aggregated TDP-43 common to nearly all MND and a large proportion of frontotemporal dementia (FTD), has placed MND alongside more traditional cerebral neurodegeneration. With new genetic causes, most notably a hexanucleotide expansion in C9orf72 associated with both MND and FTD, the development of biomarkers against which to test therapeutic candidates is a priority.

Original publication

DOI

10.7861/clinmedicine.16-6-s60

Type

Journal article

Journal

Clin Med (Lond)

Publication Date

12/2016

Volume

16

Pages

s60 - s65

Keywords

Amyotrophic lateral sclerosis, biomarker, frontotemporal dementia, genetics, pathology, Adult, Biomarkers, Frontotemporal Dementia, Humans, Motor Neuron Disease