Genomic DNA was extracted from anus or cervical samples38 (link) using the QuickExtract™ DNA Extraction Solution 1.0 (QE09050, Epicentre Biotechnologies). Extracted DNA was used for each genotyping. Six ADAR1 SNPs (rs6699729, rs3766927, rs3766925, rs3766924, rs9616 and rs9427097) were selected based on linkage disequilibrium testing and cover all described variation in ADAR1 gene23 (link),42 (link). The variants were typed using TaqMan SNP genotyping assay (Assay num: C__30114879_10, C__11259682_10, C___222942_10, C__25800598_10, C___8724401_10 and C__303121822_10, respectively, Applied Biosystems) following manufacturer’s protocol. Reactions were analyzed on an ABI PRISM 7500 (Applied Biosystems) and allele calling was performed by AutoCaller Software v 1.1 (Applied Biosystems).
Genotyping data, minor allele frequency and Hardy-Weinberg equilibrium of selected SNPs are found in Supplementary Table 1.
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