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MosaicTR: tandem repeat somatic instability quantification from long-read sequencing

Kim, J.

2026-03-18 bioinformatics
10.64898/2026.03.16.712141 bioRxiv
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SummarySomatic instability of tandem repeats modifies disease onset and progression in repeat expansion disorders and serves as a biomarker for mismatch repair deficiency in cancer. MosaicTR quantifies per-locus somatic instability from haplotype-tagged long-read sequencing data without the read-length and PCR stutter limitations of short-read approaches. A motif-unit-weighted metric reduces platform-specific sequencing noise on both PacBio HiFi and Oxford Nanopore data, and pairwise comparison modes support detection of tissue-specific or longitudinal instability changes. AvailabilityMosaicTR is freely available at https://github.com/junsoopablo/mosaictr under the MIT license. Contactjunsoopablo@snu.ac.kr

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