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Dement Geriatr Cogn Disord. 2008;26(3):247-50. doi: 10.1159/000160956. Epub 2008 Oct 8.

Deficiency of CARD8 is associated with increased Alzheimer's disease risk in women.

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Unidad de Genética Molecular, Marqués de Valdecilla University Hospital, Santander, Spain.


NF-kappaB, a major transcription factor controlling inflammation, is activated in Alzheimer's disease (AD) brains. CARD8 protein has been implicated in the suppression of NF-kappaB activity, but a truncating polymorphism (p.C10X, rs2043211) renders a non-functional CARD8 protein that gives rise to a more active NF-kappaB and an amplification of the inflammatory process. Apolipoprotein E (ApoE) epsilon4 allele, the major genetic risk factor of AD, is associated with hyperactivation of NF-kappaB and enhanced brain inflammation. In a case-control study in 300 AD patients and 300 healthy controls, we examined whether the CARD8 (p.C10X) polymorphism, independently or in concert with the ApoE epsilon4 allele, might predispose to AD. Women, but not men, carrying the CARD8 AA genotype (truncated protein) had a 2.39-fold higher risk of developing AD than subjects with the CARD8 TT genotype (full-length protein). This association with susceptibility to AD was independent of the ApoE epsilon4 allele.

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