MPS6

MPS6 aggregates and classifies published ARSB gene variants to support genetic diagnosis and research of Mucopolysaccharidosis Type VI (Maroteaux–Lamy syndrome).

Key Features:

• Variant collection and summarization: Aggregates data from 908 alleles across 478 individuals, cataloging 201 distinct ARSB variants including three polymorphisms previously considered pathogenic.
• Clinical classification (ACMG): Applies American College of Medical Genetics and Genomics (ACMG) guidelines to classify variant pathogenicity.
• Genetic heterogeneity analysis: Reports variant composition with 59.5% missense mutations and 31.7% of unique alleles observed only once.
• Public database submission: Submits classified variants to ClinVar and an MPS VI locus-specific database.
• Clinical and biochemical data integration: Associates variants with supporting clinical and biochemical evidence to inform genetic counseling and diagnostic confirmation.

Scientific Applications:

• Diagnostic confirmation: Enables independent confirmation of MPS VI diagnoses through genetic variant evidence.
• Research on pathogenic mechanisms: Provides a curated variant set for studying ARSB mutation effects and phenotypic expression in MPS VI.
• Clinical decision support: Supplies classified variants and evidence to inform personalized patient management and treatment planning.

Methodology:

Collects variant data from literature and public databases and analyzes each variant according to ACMG guidelines, with classified variants submitted to ClinVar and an MPS VI locus-specific database.