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Interrogating the "unsequenceable" genomic trinucleotide repeat disorders by long-read sequencing.


ABSTRACT: Microsatellite expansion, such as trinucleotide repeat expansion (TRE), is known to cause a number of genetic diseases. Sanger sequencing and next-generation short-read sequencing are unable to interrogate TRE reliably. We developed a novel algorithm called RepeatHMM to estimate repeat counts from long-read sequencing data. Evaluation on simulation data, real amplicon sequencing data on two repeat expansion disorders, and whole-genome sequencing data generated by PacBio and Oxford Nanopore technologies showed superior performance over competing approaches. We concluded that long-read sequencing coupled with RepeatHMM can estimate repeat counts on microsatellites and can interrogate the "unsequenceable" genomic trinucleotide repeat disorders.

SUBMITTER: Liu Q 

PROVIDER: S-EPMC5514472 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Interrogating the "unsequenceable" genomic trinucleotide repeat disorders by long-read sequencing.

Liu Qian Q   Zhang Peng P   Wang Depeng D   Gu Weihong W   Wang Kai K  

Genome medicine 20170718 1


Microsatellite expansion, such as trinucleotide repeat expansion (TRE), is known to cause a number of genetic diseases. Sanger sequencing and next-generation short-read sequencing are unable to interrogate TRE reliably. We developed a novel algorithm called RepeatHMM to estimate repeat counts from long-read sequencing data. Evaluation on simulation data, real amplicon sequencing data on two repeat expansion disorders, and whole-genome sequencing data generated by PacBio and Oxford Nanopore techn  ...[more]

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