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We determined the frequency of C9orf72 repeat expansions in a large cohort of Belgian patients with familial (fALS) and sporadic (sALS) amyotrophic lateral sclerosis (ALS). In total, 119 patients with fALS from 62 kindreds, 471 patients with sALS, and 384 control subjects were included. A C9orf72 repeat expansion was found in 32 of 62 fALS pedigrees(More)
Motor neuron degeneration in amyotrophic lateral sclerosis (ALS) has a familial cause in 10% of patients. Despite significant advances in the genetics of the disease, many families remain unexplained. We performed whole-genome sequencing in five family members from a pedigree with autosomal-dominant classical ALS. A family-based elimination approach was(More)
Progranulin (PGRN) is a growth factor involved in wound healing, inflammation, tumor growth, and neurodegeneration. Mutations in the gene encoding PGRN give rise to shortage of PGRN and cause familial frontotemporal lobar degeneration. PGRN exerts neurotrophic functions and binding of PGRN to the membrane receptor sortilin (SORT1) mediates the endocytosis(More)
Intraneuronal inclusions of TAR DNA-binding protein 43 (TDP-43) have been found in the majority of Amyotrophic Lateral Sclerosis (ALS) patients. Mutations in the gene encoding TDP-43 cause familial ALS. Transgenic mice expressing mutant TDP-43 with one such mutation (TDP-43 (A315T)) under control of the murine prion promoter develop motor symptoms, but(More)
Motor neuron degeneration in amyotrophic lateral sclerosis (ALS) is familial in 10% of patients, with mutations in SOD1 and C9orf72 being the most frequent cause. There is convincing evidence for overlap between ALS and frontotemporal lobar degeneration at the genetic, pathological, and clinical level. Null mutations in progranulin (PGRN) are a frequent(More)
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