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No association between an intronic polymorphism in the presenilin-1 gene and Alzheimer disease in a German population.

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A polymorphism in intron 8 of the presenilin-1 (PS-1) gene has been demonstrated to increase the risk for developing late-onset Alzheimer disease (AD). Conflicting results exist for the association between this intronic polymorphism and AD probably due to variations in the PS-1 gene among different ethnic groups.

We investigated the genetic association between this intronic polymorphism in the PS-1 gene and AD in a homogenous group of German Caucasians. The control group consisted of healthy subjects and depressed patients. There were no significant differences in the distribution of the PS-1 genotypes and allele frequencies between AD patients and controls.

Our data do not support an association between the intronic polymorphism of the PS-1 gene and AD and there was no interaction between the PS-1 genotype and apolipoprotein E epsilon4 allele.

Source: J Neurol Sci 1999 Aug 1;167(1):34-36

PMID: 10500259

(Department of Psychiatry, University of Bonn, Sigmund-Freud-Strasse 25, 53105, Bonn, Germany )

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