title: No association between presenilin 1 (PS1) intronic polymorphism and sporadic Alzheimer's disease in Koreans.
abstract: To investigate the possible involvement of an intronic polymorphism in the presenilin 1 (PS1) gene and its interactions with the aplolipoprotein E (APOE) or alpha-1 antichymotrypsin (ACT) polymorphisms in the manifestation of AD, we analyzed the PS1, APOE and ACT genotypes of 100 sporadic AD patients and 199 normal elderly controls in Koreans. The genotypic (chi2= 0.92, df = 2, P > 0.1) and allelic (chi2 = 0.01, df = 1, P > 0.1) frequencies of the PS1 polymorphism in the late- and early-onset sporadic AD patients did not differ from those in the controls. And the occurrence of the APOE epsilon4 allele and ACT A allele did not influence the distribution of the PS1 intronic polymorphism. The PS1 intronic polymorphism didn't influence the age-at-onset of AD (F = 0.02, df = 2, P > 0.1). In conclusion, the PS1 intronic polymorphism did not modify the risk for sporadic AD, neither independently nor synergistically with the APOE epsilon4 allele or ACT A allele, in Koreans.
authors: Neuroscience Research Institute of Medical Research Center, Seoul National University, and Clinical Research Institute of Seoul National University Hospital, Korea.
authors: K W
authors: KW
authors: Kim
authors: J H
authors: JH
authors: Jhoo
authors: K U
authors: KU
authors: Lee
authors: D Y
authors: DY
authors: Lee
authors: J H
authors: JH
authors: Lee
authors: J Y
authors: JY
authors: Youn
authors: B J
authors: BJ
authors: Lee
authors: J I
authors: JI
authors: Woo
mesh_terms: D017668:Age of Onset; D000368:Aged; D000544:Alzheimer Disease / Q000235:genetics* / Q000378:metabolism; D001057:Apolipoproteins E / Q000235:genetics*; D005260:Female; D005787:Gene Frequency / Q000235:genetics; D005838:Genotype; D006801:Humans; D007438:Introns / Q000235:genetics*; D007723:Korea; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D011110:Polymorphism, Genetic / Q000235:genetics*; D053764:Presenilin-1; D012307:Risk Factors; D000514:alpha 1-Antichymotrypsin / Q000235:genetics
chemical_list: D001057:Apolipoproteins E; D008565:Membrane Proteins; C508853:PSEN1 protein, human; D053764:Presenilin-1; D000514:alpha 1-Antichymotrypsin