Tuesday, May 06, 2008

The Whole Genome Scanning Approach

Jason Moore's Epistasis Blog features a post called The Pathway Less Traveled. The blog has some noteworthy entries and this, I believe, is one of them. Moore refers to a paper he co-authored which was accepted for publication in Current Pharmacogenomics and Personalized Medicine Quoting from the post:

Wilke, RA, Mareedu, RK, and Moore, JH. The Pathway Less Traveled: Moving from candidate genes to candidate pathways in the analysis of genome-wide data from large scale pharmacogenetic association studies. Current Pharmacogenomics and Personalized Medicine, in press (2008)


The candidate gene approach to pharmacogenetics is hypothesis driven, and anchored in biological plausibility. Whole genome scanning is hypothesis generating, and it may lead to new biology. While both approaches are important, the scientific community is rapidly reallocating resources toward the latter. We propose a step-wise approach to large-scale pharmacogenetic association studies that begins with candidate genes, then uses a pathway-based intermediate step, to inform subsequent analyses of data generated through whole genome scanning. Novel computational strategies are explored in the context of two clinically relevant examples, cholesterol synthesis and lipid signaling.


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