tbvar: A comprehensive genome variation resource for Mycobacterium tuberculosis

Area of Science:

• Genomics
• Microbiology
• Bioinformatics

Background:

• Tuberculosis, caused by Mycobacterium tuberculosis complex (MTBC), is a significant global health issue, particularly in developing nations.
• Understanding genetic variability within MTBC clinical isolates is crucial for disease control but has been limited by data accessibility and analysis.
• Recent advances in whole-genome sequencing have generated substantial MTBC data, offering opportunities to study its variome.

Purpose of the Study:

• To create a comprehensive genome variation map for the Mycobacterium tuberculosis complex (MTBC).
• To systematically analyze and annotate functional and drug-resistance-associated variants within the MTBC variome.
• To develop a publicly accessible, searchable database (tbvar) for MTBC genomic variations.

Main Methods:

• Re-analysis of publicly available whole-genome sequencing data from over 450 MTBC isolates.
• Application of a systematic computational pipeline for variant identification and annotation.
• Development of a user-friendly, searchable database with variant annotation capabilities.

Main Results:

• Construction of a comprehensive MTBC variome map containing over 29,000 single nucleotide variations.
• Identification and annotation of potential functional variants and drug-resistance-associated variants.
• Establishment of tbvar, a novel database resource for MTBC genome variation data.

Conclusions:

• The tbvar database represents the most extensive resource for MTBC genome variation to date.
• This resource facilitates deeper understanding of MTBC genetic diversity and its implications for tuberculosis.
• The database provides a valuable tool for researchers studying MTBC evolution, drug resistance, and pathogenesis.