UTRannotator

UTRannotator annotates genetic variants located in 5' untranslated regions (5'UTRs), identifying variants that create or disrupt upstream open reading frames (ORFs) to assess potential impacts on gene expression and protein synthesis.

Key Features:

• 5'UTR focus: Targets annotation of variants specifically within 5' untranslated regions rather than protein-coding sequences.
• Upstream ORF annotation: Identifies variants that create new upstream ORFs or disrupt existing upstream ORFs.
• Ensembl VEP integration: Operates as a plugin for the Ensembl Variant Effect Predictor (VEP) to add specialized non-coding annotations.
• ClinVar analysis: Has been applied to ClinVar and annotated 31.9% of all pathogenic 5'UTR variants.
• Variant prioritization: Highlights 31 variants previously classified as uncertain, flagging them as candidates for further investigation.
• Continuous updates: Designed to incorporate new knowledge about the impact of UTR variants as it emerges.

Scientific Applications:

• Annotation of disease-associated non-coding variants: Provides detailed 5'UTR annotations to investigate how non-coding variants influence gene expression and disease mechanisms.
• Prioritization of variants of uncertain significance: Identifies and flags VUS in 5'UTRs for follow-up study and validation.
• Study of rare genetic disorders: Supports investigation of rare disorders where non-coding 5'UTR mutations may play a pivotal role.

Methodology:

Integrates as a plugin with the Ensembl Variant Effect Predictor (VEP) and systematically identifies and annotates 5'UTR variants that affect upstream ORFs, adding specialized non-coding annotations to existing genomic data.