title: Integrated annotation and analysis of genetic variants from next-generation sequencing studies with variant tools.
abstract: BACKGROUND
  Storing, annotating and analyzing variants from next-generation sequencing projects can be difficult due to the availability of a wide array of data formats, tools and annotation sources, as well as the sheer size of the data files. Useful tools, including the GATK, ANNOVAR and BEDTools can be integrated into custom pipelines for annotating and analyzing sequence variants. However, building flexible pipelines that support the tracking of variants alongside their samples, while enabling updated annotation and reanalyses, is not a simple task.
  
  
  RESULTS
  We have developed variant tools, a flexible annotation and analysis toolset that greatly simplifies the storage, annotation and filtering of variants and the analysis of the underlying samples. variant tools can be used to manage and analyze genetic variants obtained from sequence alignments, and the command-line driven toolset could be used as a foundation for building more sophisticated analytical methods.
  
  
  METHODS
  variant tools consists of two command-line driven programs vtools and vtools_report. It is freely available at http://varianttools.sourceforge.net, distributed under a GPL license.
  
  
  BACKGROUND
  bpeng@mdanderson.org.
authors.affiliation: Department of Epidemiology, University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
authors.forename: F Anthony
authors.initials: FA
authors.lastname: San Lucas
authors.forename: Gao
authors.initials: G
authors.lastname: Wang
authors.forename: Paul
authors.initials: P
authors.lastname: Scheet
authors.forename: Bo
authors.initials: B
authors.lastname: Peng
mesh_terms: D014644:Genetic Variation; D015894:Genome, Human; D059014:High-Throughput Nucleotide Sequencing; D006801:Humans; D053858:Metabolic Networks and Pathways; D058977:Molecular Sequence Annotation; D012984:Software; D014584:User-Computer Interface