A combined functional annotation score for non-synonymous variants.
A combined functional annotation score for non-synonymous variants.
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DOI:
10.1159/000334984
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发表时间:
2012
期刊:
影响因子:
1.8
通讯作者:
Zeggini E
中科院分区:
文献类型:
--
作者:
Lopes MC;Joyce C;Ritchie GR;John SL;Cunningham F;Asimit J;Zeggini E
Next-generation sequencing has opened the possibility of large-scale sequence-based disease association studies. A major challenge in interpreting whole-exome data is predicting which of the discovered variants are deleterious or neutral. To address this question in silico, we have developed a score called Combined Annotation scoRing toOL (CAROL), which combines information from 2 bioinformatics tools: PolyPhen-2 and SIFT, in order to improve the prediction of the effect of non-synonymous coding variants. We used a weighted Z method that combines the probabilistic scores of PolyPhen-2 and SIFT. We defined 2 dataset pairs to train and test CAROL using information from the db-SNP: ‘HGMD-PUBLIC’ and 1000 Genomes Project databases. The training pair comprises a total of 980 positive control (disease-causing) and 4,845 negative control (non-disease-causing) variants. The test pair consists of 1,959 positive and 9,691 negative controls. CAROL has higher predictive power and accuracy for the effect of non-synonymous variants than each individual annotation tool (PolyPhen-2 and SIFT) and benefits from higher coverage. The combination of annotation tools can help improve automated prediction of whole-genome/exome non-synonymous variant functional consequences.
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