GRACy a tool for analysing human cytomegalovirus sequence data

Salvatore Camiolo, Nicolás M Suárez, Antonia Chalka, Cristina Venturini, Judith Breuer, Andrew J Davison

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Modern DNA sequencing has instituted a new era in human cytomegalovirus (HCMV) genomics. A key development has been the ability to determine the genome sequences of HCMV strains directly from clinical material. This involves the application of complex and often non-standardized bioinformatics approaches to analysing data of variable quality in a process that requires substantial manual intervention. To relieve this bottleneck, we have developed GRACy (Genome Reconstruction and Annotation of Cytomegalovirus), an easy-to-use toolkit for analysing HCMV sequence data. GRACy automates and integrates modules for read filtering, genotyping, genome assembly, genome annotation, variant analysis, and data submission. These modules were tested extensively on simulated and experimental data and outperformed generic approaches. GRACy is written in Python and is embedded in a graphical user interface with all required dependencies installed by a single command. It runs on the Linux operating system and is designed to allow the future implementation of a cross-platform version. GRACy is distributed under a GPL 3.0 license and is freely available at with the manual and a test dataset.

Original languageEnglish
Pages (from-to)veaa099
JournalVirus Evolution
Issue number1
Publication statusPublished - 30 Dec 2020

Keywords / Materials (for Non-textual outputs)

  • human cytomegalovirus
  • genotyping
  • de novo assembly
  • genome annotation
  • variant discovery


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