Binless normalization of Hi-C data provides significant interaction and difference detection independent of resolution

Yannick G. Spill (), David Castillo, Enrique Vidal and Marc A. Marti-Renom ()
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Yannick G. Spill: Barcelona Institute of Science and Technology (BIST), Baldiri i Reixac 4
David Castillo: Barcelona Institute of Science and Technology (BIST), Baldiri i Reixac 4
Enrique Vidal: Barcelona Institute of Science and Technology (BIST), Baldiri i Reixac 4
Marc A. Marti-Renom: Barcelona Institute of Science and Technology (BIST), Baldiri i Reixac 4

Nature Communications, 2019, vol. 10, issue 1, 1-10

Abstract: Abstract Chromosome conformation capture techniques, such as Hi-C, are fundamental in characterizing genome organization. These methods have revealed several genomic features, such as chromatin loops, whose disruption can have dramatic effects in gene regulation. Unfortunately, their detection is difficult; current methods require that the users choose the resolution of interaction maps based on dataset quality and sequencing depth. Here, we introduce Binless, a resolution-agnostic method that adapts to the quality and quantity of available data, to detect both interactions and differences. Binless relies on an alternate representation of Hi-C data, which leads to a more detailed classification of paired-end reads. Using a large-scale benchmark, we demonstrate that Binless is able to call interactions with higher reproducibility than other existing methods. Binless, which is freely available, can thus reliably be used to identify chromatin loops as well as for differential analysis of chromatin interaction maps.

Date: 2019
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DOI: 10.1038/s41467-019-09907-2

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