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Association of sporadic Creutzfeldt–Jakob disease with homozygous genotypes at PRNP codons 129 and 219 in the Korean population

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Abstract

Human prion protein gene (PRNP) is considered an important gene in determining the incidence of human transmissible spongiform encephalopathies or prion diseases. Polymorphisms of PRNP at codon 129 in Europeans and codon 219 in Japanese may play an important role in the susceptibility to sporadic Creutzfeldt–Jakob disease (CJD); data regarding codon 129 in the Japanese population have led to divergent interpretations. In order to determine which, if any, of the PRNP genotypes in Korean people are associated with sporadic CJD, we examined the genotype and allelic distributions of human PRNP polymorphisms in 150 patients with sporadic CJD. All Korean sporadic CJD patients were Met/Met at codon 129, Glu/Glu at codon 219 and undeleted at the octarepeat region of PRNP. Our study showed significant differences in genotype frequency of PRNP at codon 129 (χ 2=8.8998, P=0.0117) or 219 (χ 2=12.6945, P=0.0004) between sporadic CJD and normal controls. Furthermore, the genotype frequency of the heterozygotes for codons 129 and/or 219 showed a significant difference between the normal population and sporadic CJD patients (χ 2=21.0780, P<0.0001).

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Acknowledgements

We thank Dr. Yong-Hee Kim for help with the statistical analysis. This study was supported by a grant of the Korea Health 21 R&D Project, Ministry of Health and Welfare, Republic of Korea (A020007).

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Correspondence to Yong-Sun Kim.

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Jeong, BH., Lee, KH., Kim, NH. et al. Association of sporadic Creutzfeldt–Jakob disease with homozygous genotypes at PRNP codons 129 and 219 in the Korean population. Neurogenetics 6, 229–232 (2005). https://doi.org/10.1007/s10048-005-0016-y

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