VCF2CNA: A tool for efficiently detecting copy-number alterations in VCF genotype data and tumor purity.

Abstract:

:VCF2CNA is a tool (Linux commandline or web-interface) for copy-number alteration (CNA) analysis and tumor purity estimation of paired tumor-normal VCF variant file formats. It operates on whole genome and whole exome datasets. To benchmark its performance, we applied it to 46 adult glioblastoma and 146 pediatric neuroblastoma samples sequenced by Illumina and Complete Genomics (CGI) platforms respectively. VCF2CNA was highly consistent with a state-of-the-art algorithm using raw sequencing data (mean F1-score = 0.994) in high-quality whole genome glioblastoma samples and was robust to uneven coverage introduced by library artifacts. In the whole genome neuroblastoma set, VCF2CNA identified MYCN high-level amplifications in 31 of 32 clinically validated samples compared to 15 found by CGI's HMM-based CNA model. Moreover, VCF2CNA achieved highly consistent CNA profiles between WGS and WXS platforms (mean F1 score 0.97 on a set of 15 rhabdomyosarcoma samples). In addition, VCF2CNA provides accurate tumor purity estimates for samples with sufficient CNAs. These results suggest that VCF2CNA is an accurate, efficient and platform-independent tool for CNA and tumor purity analyses without accessing raw sequence data.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Putnam DK,Ma X,Rice SV,Liu Y,Newman S,Zhang J,Chen X

doi

10.1038/s41598-019-45938-x

subject

Has Abstract

pub_date

2019-07-17 00:00:00

pages

10357

issue

1

issn

2045-2322

pii

10.1038/s41598-019-45938-x

journal_volume

9

pub_type

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