High prevalence of a form of autosomal recessive spastic ataxia with early onset was originally described among French Canadians in the Charlevoix-Saguenay region, in northeastern Quebec. Since the responsible gene (...
Described are six patients with Alpers syndrome from four unrelated families. Affected individuals harbored the following combinations of POLG mutations: 1) A 467T/W1020X, 2) W748S-E1143G/G848S, 3) A467T/A467T, and 4)...
Background: Recently, six molecular subtypes of sporadic CJD (sCJD) have been identified showing differences regarding the disease course, neuropathologic lesion patterns, and sensitivity to diagnostic tools. Only iso...
Background: Excitotoxicity is one pathogenic mechanism proposed in amyotrophic lateral sclerosis (ALS), and loss of cortical inhibitory influence may be contributory. Patients with ALS who are homozygous for the D90A ...
Background: Mutations in the dysferlin (DYSF) gene cause 3 different phenotypes of muscular dystrophies: Miyoshi myopathy, limb-girdle muscular dystrophy type 2B, and distal anterior compartment myopathy. Abstract:Obj...
The authors describe two Japanese siblings with autosomal recessive spastic a taxia of Charlevoix-Saguenay (ARSACS)-without spasticity, usually a core fea ture of this disorder. They had a novel homozygous missense mu...
Objective: To document novel homozygous mutations in the gene for deoxyguanosi ne kinase (DGK) in 3 children with mitochondrial DNA depletion. Design: Clinical features included liver failure, hypotonia, and nystagmus...
The authors report the clinical and histologic phenotypes of a LGMD1B family including a newborn child with a homozygous LMNA nonsense mutation (Y259X). At the heterozygous state the nonsense mutation leads to a class...
Background Individuals homozygous for the T allele of the MTHFR C677T polymorphism have higher plasma homocysteine concentrations (the phenotype) than those with the CC genotype, which, if pathogenetic, should put the...
Mutations in the leucine- rich repeat kinase 2 (L- RRK2) gene cause some forms of autosomal dominant Parkinson’ s disease. We measured the frequency of a novel mutation (Gly2019 ser) in familial Parkinson’ s disease...