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Genome Graphs and the Evolution of Genome Inference

By Benedict Paten, Adam M. Novak, Jordan Eizenga, Erik Garrison

Posted 14 Mar 2017
bioRxiv DOI: 10.1101/101816 (published DOI: 10.1101/gr.214155.116)

The human reference genome is part of the foundation of modern human biology, and a monumental scientific achievement. However, because it excludes a great deal of common human variation, it introduces a pervasive reference bias into the field of human genomics. To reduce this bias, it makes sense to draw on representative collections of human genomes, brought together into reference cohorts. There are a number of techniques to represent and organize data gleaned from these cohorts, many using ideas implicitly or explicitly borrowed from graph based models. Here, we survey various projects underway to build and apply these graph based structures—which we collectively refer to as genome graphs—and discuss the improvements in read mapping, variant calling, and haplotype determination that genome graphs are expected to produce.

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