WilsonGen a comprehensive clinically annotated genomic variant resource for Wilson's Disease

Area of Science:

• Genetics
• Molecular Biology
• Medical Research

Background:

• Wilson disease (WD) is a prevalent genetic disorder caused by copper accumulation in organs.
• Genetic variants in the ATP7B gene are linked to WD, with numerous novel variants discovered via next-generation sequencing.
• Previous variant compilations lacked standardized pathogenicity assessments.

Purpose of the Study:

• To create a comprehensive, clinically annotated resource of ATP7B gene variants for Wilson disease.
• To systematically annotate variants using the American College of Medical Genetics and Association of Molecular Pathologists (ACMG & AMP) guidelines.
• To provide a centralized, reliable data source for clinicians and geneticists studying WD.

Main Methods:

• Manual curation of genetic variants from literature and databases.
• Systematic annotation of variants using ACMG & AMP pathogenicity guidelines.
• Mapping of pathogenic variants to the ATP7B protein and analysis of geographical distribution.

Main Results:

• Compiled 3662 WD-associated genetic variants, with 1458 unique entries.
• Identified and classified 656 pathogenic/likely pathogenic variants according to ACMG & AMP guidelines.
• Developed the largest WD database with mapped variant information and geographical distribution.

Conclusions:

• The developed resource is the most comprehensive and only clinically annotated database for Wilson disease variants.
• Systematic annotation using ACMG & AMP guidelines enhances the utility of WD genetic variant data.
• This resource serves as a crucial tool for advancing WD research, diagnosis, and clinical management.