Rapid and powerful detection of subtle allelic imbalance from exome sequencing data with hapLOHseq.

ABSTRACT:

Motivation

The detection of subtle genomic allelic imbalance events has many potential applications. For example, identifying cancer-associated allelic imbalanced regions in low tumor-cellularity samples or in low-proportion tumor subclones can be used for early cancer detection, prognostic assessment and therapeutic selection in cancer patients. We developed hapLOHseq for the detection of subtle allelic imbalance events from next-generation sequencing data.

Results

Our method identified events of 10 megabases or greater occurring in as little as 16% of the sample in exome sequencing data (at 80×) and 4% in whole genome sequencing data (at 30×), far exceeding the capabilities of existing software. We also found hapLOHseq to be superior at detecting large chromosomal changes

SUBMITTER: San Lucas FA 

PROVIDER: S-EPMC5039922 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature