The normal population distribution of PRNP codon 129 polymorphism
Article first published online: 13 OCT 2003
Acta Neurologica Scandinavica
Volume 108, Issue 5, pages 374–378, November 2003
How to Cite
Nurmi, M. H., Bishop, M., Strain, L., Brett, F., McGuigan, C., Hutchison, M., Farrell, M., Tilvis, R., Erkkilä, S., Simell, O., Knight, R. and Haltia, M. (2003), The normal population distribution of PRNP codon 129 polymorphism. Acta Neurologica Scandinavica, 108: 374–378. doi: 10.1034/j.1600-0404.2003.00199.x
- Issue published online: 13 OCT 2003
- Article first published online: 13 OCT 2003
- Accepted for publication June 12, 2003
- PRNP polymorphism;
- PRNP codon 129;
- Creutzfeldt–Jakob disease;
- prion diseases
Objectives – The common prion protein gene (PRNP) codon 129 polymorphism modifies the susceptibility to and the phenotype of prion diseases. However, no truly representative normal population-based data, or data stratified according to age or gender are available on the distribution of this polymorphism.
Material and methods – Allelic variation of codon 129 in three Finnish populations representing different age groups, and among Finnish, British and Irish blood donors were examined.
Results – The PRNP codon 129 genotype distribution in the total Finnish sample was 49% for methionine–methionine (MM), 42% for methionine–valine (MV) and 9% for valine–valine (VV), for the UK blood donors 42% for MM, 47% for MV and 11% for VV, and for the Irish blood donors 34% for MM, 56% for MV, and 10% for VV.
Conclusions – The genotype frequencies were almost identical in all three Finnish populations of different ages, with no gender differences, and did not differ from corresponding figures for the Finnish blood donors. However, the PRNP codon 129 genotype distribution in Finland differed significantly from that of the British and the Irish blood donors and the previously published blood donor data on other Western Europeans and Americans.