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Allelic distribution of BDNF Val66Met polymorphism in healthy Romanian volunteers
Romana Vulturar1, Adina Chiş1, Melinda Hambrich2
1Discipline of Cell and Molecular Biology, Department of Molecular Sciences, "Iuliu Ha.ieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania; Cognitive Neuroscience Laboratory, Department of Psychology, Babeş-Bolyai University, Cluj-Napoca, Romania.
Abstract:
Population stratification of functional gene polymorphisms is a potential confounding factor in genetic association studies. The Val66Met (rs6265) single-nucleotide polymorphism in the brain-derived neurotrophic factor gene (BDNF) exhibits one of the highest variabilities in terms of allelic distribution between populations. The present study reports the distribution of BDNF Val66Met alleles in a sample of healthy volunteers (N = 1124) selected from the Romanian population. Frequencies were 80.74% for the Val allele and 19.26% for the Met allele. The data from this study extends efforts to map the allelic distribution of BDNF Val66Met in populations around the world and emphasizes that population stratification should be controlled for in future studies that report phenotypic associations in samples from different populations.
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