VarSCAT

VarSCAT annotates sequence context of genomic variants to characterize breakpoint ambiguities, flanking bases, short tandem repeats (STRs), insertions/deletions (indels), wildtype and mutated DNA sequences, and variant nomenclatures for downstream genomics and clinical analyses.

Key Features:

• Comprehensive sequence-context annotation: Identifies breakpoint ambiguities, annotates flanking bases, and reports wildtype and mutated DNA sequences along with variant nomenclatures.
• Customizable annotation parameters: Supports user-defined parameters to tailor annotation outputs for specific analyses.
• STR and indel analysis: Analyzes short tandem repeat (STR) regions and insertions/deletions (indels), including events with breakpoint ambiguities.
• Correlation analysis: Enables analysis of the relationship between indel sizes and STR motif sizes.

Scientific Applications:

• Human variant set analysis: Enables detailed annotation of high-confidence human variant sets for genomic research.
• Clinical genetics: Reveals breakpoint ambiguities in a significant proportion of germline and clinically relevant indels, informing clinical interpretation.
• STR-associated variant studies: Supports investigation of small variants within STR regions relevant to genetic disorder research.

Methodology:

Applies customizable annotation parameters to identify breakpoint ambiguities, annotate flanking bases, detail wildtype and mutated sequences, assign variant nomenclatures, and perform correlation analyses between indel sizes and STR motif sizes.