Related Experiment Video
Updated: Jun 10, 2025

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
GVAF: generalized, flexible filtering software for annotated variant files
Sora Kim1, Sungwon Jung2,3
1Department of Genome Medicine and Science, Gachon University College of Medicine, 38-13 Dokjeom-ro 3 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea.
Background:
In the rapidly advancing field of genomics, many tools have been developed to interpret genetic variants using next-generation sequencing (NGS) data. However, these tools often produce annotated variant files in different formats, which require specific software or programming skills to filter and analyze.
Objective:
To provide a filtering tool that can be used with diverse variant annotation tools without requiring specific software or programming skills.
Methods:
We developed Germline Variant Annotation and Filtering (GVAF), a command-line software tool that can handle annotated variant files in any table-shaped format. GVAF offers powerful filtering operations without the need for additional software or programming expertise.
Results:
Built on the Java framework and bash scripts, it provides extensive features, including flexible filtering rules, recognition of genotype-related fields from variant call format (VCF) files, and customizable result generation. GVAF also integrates easily into existing data analysis pipelines. Compared to other tools, GVAF offers a broader range of functionalities, making it more flexible and intuitive for managing annotated variant files.
Conclusion:
This GVAF software and online manual is publicly available at https://www.sysbiolab.org/gvaf for academic users and is designed to streamline the variant interpretation process, aiding researchers in producing meaningful results.
More Related Videos
Related Concept Videos
Genome Annotation and Assembly
Sanger Sequencing
Genome-wide Association Studies-GWAS
GWAS does not require the identification of the target gene involved in...
Next-generation Sequencing
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
Comparing Copy Number Variations and SNPs
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Genomics

