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    FEPI-MB: identifying SNPs-disease association using a Markov Blanket-based approach

    Han, Bing
    Chen, Xue-wen
    Talebizadeh, Zohreh
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    [XML] 1471-2105-12-S12-S3.xml (74.38Kb)
    [PDF] 1471-2105-12-S12-S3.pdf (409.7Kb)
    Date
    2011-11-24
    Format
    Journal Article
    Metadata
    [+] Show full item record
    Abstract
    Abstract Background The interactions among genetic factors related to diseases are called epistasis. With the availability of genotyped data from genome-wide association studies, it is now possible to computationally unravel epistasis related to the susceptibility to common complex human diseases such as asthma, diabetes, and hypertension. However, the difficulties of detecting epistatic interaction arose from the large number of genetic factors and the enormous size of possible combinations of genetic factors. Most computational methods to detect epistatic interactions are predictor-based methods and can not find true causal factor elements. Moreover, they are both time-consuming and sample-consuming. Results We propose a new and fast Markov Blanket-based method, FEPI-MB (Fast EPistatic Interactions detection using Markov Blanket), for epistatic interactions detection. The Markov Blanket is a minimal set of variables that can completely shield the target variable from all other variables. Learning of Markov blankets can be used to detect epistatic interactions by a heuristic search for a minimal set of SNPs, which may cause the disease. Experimental results on both simulated data sets and a real data set demonstrate that FEPI-MB significantly outperforms other existing methods and is capable of finding SNPs that have a strong association with common diseases. Conclusions FEPI-MB algorithm outperforms other computational methods for detection of epistatic interactions in terms of both the power and sample-efficiency. Moreover, compared to other Markov Blanket learning methods, FEPI-MB is more time-efficient and achieves a better performance.
    URI
    http://dx.doi.org/10.1186/1471-2105-12-S12-S3
    http://hdl.handle.net/10355/15008
    Citation
    BMC Bioinformatics. 2011 Nov 24;12(Suppl 12):S3
    Rights
    Bing Han et al.; licensee BioMed Central Ltd.
    Collections
    • BioMed Central Open Access Articles (UMKC)
    • Department of Pediatrics Publications (UMKC)

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