We present SeqOthello, an ultra-fast and memory-efficient indexing structure to support arbitrary sequence query against large collections of RNA-seq experiments. It takes SeqOthello only 5 min and 19.1 GB memory to conduct a global survey of 11,658 fusion events against 10,113 TCGA Pan-Cancer RNA-seq datasets. The query recovers 92.7% of tier-1 fusions curated by TCGA Fusion Gene Database and reveals 270 novel occurrences, all of which are present as tumor-specific. By providing a reference-free, alignment-free, and parameter-free sequence search system, SeqOthello will enable large-scale integrative studies using sequence-level data, an undertaking not previously practicable for many individual labs.
CITATION STYLE
Yu, Y., Liu, J., Liu, X., Zhang, Y., Magner, E., Lehnert, E., … Liu, J. (2018). SeqOthello: querying RNA-seq experiments at scale. Genome Biology, 19(1). https://doi.org/10.1186/s13059-018-1535-9
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