Peter H St George-Hyslop

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BACKGROUND Mutations in the presenilin-1 gene (PS1) account for a majority of patients with early-onset familial AD. However, the clinical indications and algorithms for genetic testing in dementia are still evolving. METHODS The entire open reading frame of the PS1 gene was sequenced in a series of 414 consecutive patients referred for diagnostic(More)
OBJECTIVE To analyze the association of polymorphisms in the tau gene with pathologically confirmed corticobasal degeneration (CBD). BACKGROUND The authors previously described an extended tau haplotype (H1) that covers the human tau gene and is associated with the development of progressive supranuclear palsy (PSP). The authors now extend this analysis(More)
Nicastrin regulates gamma-secretase cleavage of the amyloid precursor protein by forming complexes with presenilins, in which most mutations causing familial early-onset Alzheimer disease (EOAD) have been found. The gene encoding nicastrin (NCSTN) maps to 1q23, a region that has been linked and associated with late-onset Alzheimer disease (LOAD) in various(More)
BACKGROUND Seven loci for autosomal dominant hereditary spastic paraplegia (ADHSP) have been mapped. To date, two families of SPG12 (chromosome 19q13) have been analyzed; however, there is not enough clinical information on SPG12 to establish locus-phenotype correlations. METHODS The authors studied 60 individuals from a large Italian family with ADHSP,(More)
In searching for a putative third gene for autosomal dominant polycystic kidney disease (ADPKD), we studied the genetic inheritance of a large family (NFL10) previously excluded from linkage to both the PKD1 locus and the PKD2 locus. We screened 48 members of the NFL10 pedigree, by ultrasonography, and genotyped them, with informative markers, at both the(More)
Autosomal dominant polycystic kidney disease (ADPKD) is a common Mendelian disorder that affects approximately 1 in 1000 live births. Mutations of two genes, PKD1 and PKD2, account for the disease in approximately 80 to 85% and 10 to 15% of the cases, respectively. Significant interfamilial and intrafamilial renal disease variability in ADPKD has been well(More)
Mutations in DJ-1 have been linked to an autosomal recessive form of early-onset parkinsonism. To identify mutations causing Parkinson's disease (PD), we sequenced exons 1 through 7 of DJ-1 in 107 early-onset (age at diagnosis up to 50 years) PD subjects. One subject had a frameshift mutation in the first coding exon and an exon 7 splice mutation both(More)
Benign hereditary chorea is an autosomal dominant disorder presenting with childhood-onset chorea, no dementia, and little or no progression. We present a family with typical clinical features of benign hereditary chorea. Pathological investigation of the brain of an affected family member who died of an unrelated condition showed no significant gross or(More)
Cognition in transgenic mouse models of Alzheimer's disease (AD) has been predominantly characterized in explicit spatial orientation tasks. However, dementia in AD encompasses also implicit memory systems. In the present study a line of transgenic mice (TgCRND8) encoding a double mutated allele of the human amyloid precursor protein (APP) genes was(More)
Nicastrin is a recently discovered protein interacting with presenilins and the beta-amyloid precursor protein, the proteins playing key roles in Alzheimer's disease and which, when mutated, appear responsible for early-onset familial forms of Alzheimer's disease. Nicastrin was reported to modulate beta-amyloid production, a phenotype affected differently(More)