Progranulin genetic variability contributes to amyotrophic lateral sclerosis

Null mutations in progranulin (PGRN) cause ubiquitin-positive frontotemporal dementia (FTD) linked to chromosome 17q21 (FTDU-17). Here we examined PGRN genetic variability in amyotrophic lateral sclerosis (ALS), a neurodegenerative motor neuron disease that overlaps with FTD at a clinical, pathologi...

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Published in:	Neurology Vol. 71; no. 4; pp. 253 - 259
Main Authors:	SLEEGERS, K, BROUWERS, N, CRUTS, M, SCHYMKOWITZ, J, DE JONGHE, P, ROUSSEAU, F, VAN DEN BERG, L. H, ROBBERECHT, W, VAN BROECKHOVEN, C, MAURER-STROH, S, VAN ES, M. A, VAN DAMME, P, VAN VUGHT, P. W. J, VAN DER ZEE, J, SERNEELS, S, DE POORER, T, VAN DEN BROECK, M
Format:	Journal Article
Language:	English
Published:	Hagerstown, MD Lippincott Williams & Wilkins 22-07-2008
Subjects:	Adult Age of Onset Aged Amyotrophic Lateral Sclerosis - genetics Belgium Biological and medical sciences Dementia - genetics DNA Mutational Analysis Female Genetic Markers - genetics Genetic Predisposition to Disease - genetics Genetic Testing Genetic Variation - genetics Genotype Haplotypes Humans Intercellular Signaling Peptides and Proteins - genetics Male Medical sciences Middle Aged Multiple sclerosis and variants. Guillain barré syndrome and other inflammatory polyneuropathies. Leukoencephalitis Mutation - genetics Mutation, Missense - genetics Netherlands Neurology Polymorphism, Genetic - genetics Survival Rate Belgium Netherlands Amyotrophic lateral sclerosis Nervous system diseases Degenerative disease Genetic variability Spinal cord disease Central nervous system disease
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Summary:	Null mutations in progranulin (PGRN) cause ubiquitin-positive frontotemporal dementia (FTD) linked to chromosome 17q21 (FTDU-17). Here we examined PGRN genetic variability in amyotrophic lateral sclerosis (ALS), a neurodegenerative motor neuron disease that overlaps with FTD at a clinical, pathologic, and epidemiologic level. We sequenced all exons, exon-intron boundaries, and 5' and 3' regulatory regions of PGRN in a Belgian sample of 230 patients with ALS. The frequency of observed genetic variants was determined in 436 healthy control individuals. The contribution of eight frequent polymorphisms to ALS risk, onset age, and survival was assessed in an association study in the Belgian sample and a replication series of 308 Dutch patients with ALS and 345 Dutch controls. In patients with ALS we identified 11 mutations, 5 of which were predicted to affect PGRN protein sequence or levels (four missense mutations and one 5' regulatory variant). Moreover, common variants (rs9897526, rs34424835, and rs850713) and haplotypes were significantly associated with a reduction in age at onset and a shorter survival after onset of ALS in both the Belgian and the Dutch studies. PGRN acts as a modifier of the course of disease in patients with amyotrophic lateral sclerosis, through earlier onset and shorter survival.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0028-3878 1526-632X
DOI:	10.1212/01.wnl.0000289191.54852.75