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Showing posts with the label molecular signatures

Are we ready to move beyond MSigDB and start a community-based gene set resource?

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Gene sets are distilled information about molecular profiling experiments and can generated based on other features shared by groups of genes such as chromosomal position, sequence, co-regulation, functional information, etc.

These are a valuable resource because they suggest similarities between different molecular profiling experiments or phenomona and lead researchers into understanding the factors that drive the trends in profiling experiments such as gene expression assays by microarray or RNA-seq.

To truly grasp the importance of quality gene sets, consider that the original paper describing the GSEA algorithm has accumulated 3144 citations since 2003, while the paper describing the software and wider applicability of GSEA has 7166 citations. The latter paper has also attracted positive comments from experts in the field on PubMed, here is one that I couldn't agree with more. In the words of Rafael Irizarry, "The idea of analyzing differential expression for groups of g…