SnackVar

SnackVar analyzes Sanger sequencing data to detect and characterize genetic variants for clinical and research applications.

Key Features:

• Comprehensive Variant Detection: Identifies all types of genetic variants from Sanger sequencing data, including heterozygous insertion/deletion (indel) variants.
• Automated Heterozygous Indel Optimization: Automatically adjusts the gap opening penalty when higher values are required for accurate indel detection.
• Prestored Reference Sequences and HGVS Annotation: Includes prestored reference sequences for all genes and describes/annotates detected variants according to Human Genome Variation Society (HGVS) nomenclature.
• Performance on Indel-rich Genes: Demonstrated 98.9% concordance with previously reported variants in BRCA1, APC, CALR, and CEBPA and required less than half the analysis time versus compared commercial software for selected test cases.

Scientific Applications:

• Clinical diagnostics: Detection and characterization of pathogenic variants from Sanger sequencing in clinical laboratory workflows.
• Variant confirmation and validation: Confirmation of variants detected by next-generation sequencing through targeted Sanger sequencing analysis.
• Genetic research and personalized medicine: Analysis of indel-rich genes and precise variant annotation to support research and individualized clinical interpretation.

Methodology:

Performs variant calling from Sanger sequencing data, automatically adjusts gap opening penalty for indel detection, uses prestored reference sequences for all genes, and generates HGVS-compliant variant descriptions.