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JAR files and release notes for v2.4.0
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RELEASE NOTES FOR VARSCAN V2.4.0 | ||
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20-Aug-2015 | ||
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VarScan v2.4.0 is the first release to VarScan's new home at GitHub, http://dkoboldt.github.io/varscan/ | ||
VarScan v2.3.9 and prior releases will persist on SourceForge, as will the support forums and other resources. | ||
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LICENSE | ||
VarScan 2 is free for non-commercial use by academic, government, and non-profit/not-for-profit institutions. | ||
A commercial version of the software is available, and licensed through the Office of Technology Management at | ||
Washington University School of Medicine. For more information, please contact: | ||
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Paul Carter, Business Development Director | ||
[email protected] | ||
+1 314-362-5426 | ||
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VERSION 2.4.0 CHANGES | ||
The major change to v2.4.0 is the implementation of a SmartFileReader class, which addresses a known bug | ||
in Java runtime that could cause VarScan to hang if given an empty input file. Hat tip to Bina Technologies | ||
for contributing this code. | ||
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Minor issues addressed in the current release include: | ||
1.) A correction in the way normal_reads2 values are counted when the mutation allele is not observed. Prior | ||
to this fix, a non-reference base would be counted as a variant allele even if it didn't match the actual mutation | ||
allele called in the tumor. Now, only observations of the tumor variant allele will be counted and go into the FET. | ||
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2.) Improved parameter-handling logic for two flags (--validation and --strand-filter), which previously were | ||
sometimes considered "turned on" if the user provided them, even if the value provided was a zero. | ||
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3.) Catching the rare ArrayIndexOutOfBoundsException errors thrown in the copynumber and trio functions when | ||
VarScan encountered incomplete mpileup columns. | ||
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4.) Addressed a typo-bug for the tumor-purity parameter which only had an effect if the user provided percentage | ||
values (e.g. 15) rather than fractions (e.g. 0.15). | ||
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REMINDER: PLEASE USE THE FALSE POSITIVE FILTER | ||
The scientific basis of this filter is described in the VarScan 2 publication. It will improve | ||
the precision of variant and mutation calling by removing artifacts associated with short-read alignment. | ||
-For somatic mutations, generate bam-readcounts with the Tumor BAM. For LOH and Germline, generate readcounts with the Normal BAM | ||
-For de novo mutations (trio calling), generate readcounts with the child BAM. | ||
The filter requires the bam-readcount utility: https://github.com/genome/bam-readcount | ||
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USAGE: java -jar VarScan.jar fpfilter [variant file] [readcount file] OPTIONS | ||
variant file - A file of SNPs or indels in VarScan-native or VCF format | ||
readcount file - The output file from bam-readcount for those positions | ||
***For detailed filtering instructions, please visit http://varscan.sourceforge.net*** | ||
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OPTIONS: | ||
--output-file Optional output file for filter-pass variants | ||
--filtered-file Optional output file for filter-fail variants | ||
--keep-failures If set to 1, include failures in the output file | ||
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--min-var-count Minimum number of variant-supporting reads [4] | ||
--min-var-freq Minimum variant allele frequency [0.05] | ||
--min-var-readpos Minimum average read position of var-supporting reads [0.10] | ||
--min-var-dist3 Minimum average relative distance to effective 3' end [0.10] | ||
--min-strandedness Minimum fraction of variant reads from each strand [0.01] | ||
--min-strand-reads Minimum allele depth required to perform the strand tests [5] | ||
--min-ref-basequal Minimum average base quality for ref allele [30] | ||
--min-var-basequal Minimum average base quality for var allele [30] | ||
--max-rl-diff Maximum average relative read length difference (ref - var) [0.25] | ||
--max-var-mmqs Maximum mismatch quality sum of variant-supporting reads [100] | ||
--max-mmqs-diff Maximum average mismatch quality sum (var - ref) [50] | ||
--min-ref-mapqual Minimum average mapping quality for ref allele [30] | ||
--min-var-mapqual Minimum average mapping quality for var allele [30] | ||
--max-mapqual-diff Maximum average mapping quality (ref - var) [50] | ||
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CITING VARSCAN | ||
If you use VarScan, please note the version number and cite this publication along with the | ||
version-appropriate URL: | ||
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Koboldt DC, Zhang Q, Larson DE, Shen D, McLellan MD, Lin L, Miller CA, Mardis ER, Ding L, Wilson RK. | ||
VarScan 2: somatic mutation and copy number alteration discovery in cancer by exome sequencing. | ||
Genome Res. 2012 Mar;22(3):568-76. doi: 10.1101/gr.129684.111. | ||
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https://github.com/dkoboldt/varscan (v2.4.0 and beyond) | ||
or | ||
http://varscan.sourceforge.net (v2.3.9 and before) | ||
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