Annotation capabilities
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VarSeq provides powerful annotation capabilities for variant analysis including gene tracks, assemblies, variant functions, frequency tracks, functional predictions, and transcript annotations. It integrates information from over 20 public databases and sources and updates annotations monthly to provide the most current clinically relevant information for researchers. By centralizing variant annotations from disparate sources, VarSeq saves customers significant time and resources compared to manual curation of this data.
Annotation capabilities
- 1. Advantages of VarSeq’s Annotation Capabilities Darby Kammeraad - Field Application Scientist 20 most promising Biotech Technology Providers Top 10 Analytics Solution Providers Hype Cycle for Life sciences
- 2. Golden Helix – Who We Are Golden Helix is a global bioinformatics company founded in 1998. GWAS Genomic Prediction Large-N-Population Studies RNA-Seq Large-N CNV-Analysis Variant Warehouse Centralized Annotations Hosted Reports Sharing and Integration Variant Calling Filtering and Annotation Clinical Reports CNV Analysis Pipeline: Run Workflows
- 3. Cited in over 1100 peer-reviewed publications
- 4. Over 350 customers globally
- 5. Golden Helix – Who We Are When you choose a Golden Helix solution, you get more than just software ▪ REPUTATION ▪ TRUST ▪ EXPERIENCE ▪ INDUSTRY FOCUS ▪ THOUGHT LEADERSHIP ▪ COMMUNITY ▪ TRAINING ▪ SUPPORT ▪ RESPONSIVENESS ▪ INNOVATION and SPEED ▪ CUSTOMIZATIONS
- 7. Annotation Options in VarSeq Types Description Popular Examples in VarSeq Gene Tracks Gene and effect on transcript(s) RefSeq, Ensemble, dbNSFP Assemblies Refence sequence and alignment review GRCh 37 hg19, GRCh 38/37 g1k Low complexity regions Microarray Probe Maps Matching variant with microarray probe location Affymetrix Cytogenetic/500K/SNP Variant/Function Allele frequencies and functional predictions gnomAD, ExAC, ICGC, CADD, OMIM, dbSNP, dbNSFP, OncoMD, ClinVar, COSMIC (cancer) Targeted Panels Disease specific regions TruSight (Cancer/Cardio/Autism), Ion AmpliSeq Disease Panel
- 8. Data Curation – A Peek Under The Hood ▪ Frequently update annotations – monthly for most (ClinVar, OncoMD, & others) ▪ From many disparate sources, researching the best representation of the raw data sources ▪ Variant normalization and transformation ensures the precision and sensitivity in matching genomic data source ▪ We work with creators of annotation sources providing feedback ▪ Substantial savings for clients – multiple Full Time Equivalents
- 9. Clinical assessment - ClinVar ▪ ClinVar – features 414,708 variants - This public archive from NCBI - Collaboration of many clinical labs (both commercial and academic) - Reports the relationship among human variations and phenotypes (supporting evidence from dbSNP) - Variants found in patient samples, their clinical significance, submitter information, and other supporting data - Alleles mapped to reference sequences and use HGVS standards - Submissions can be review by an expert panel.
- 10. Clinical assessment - OMIM ▪ OMIM (updated Monthly) - Contains information from all known Mendelian disorders - Variants (features 20,527 variants) These are specific variant assertions with clinical annotations and references - Genes (features 14,825 variants) Includes linked phenotypes and their inheritance pattern, with full HTML descriptions - Phenotypes (features 4,370 variants) Linked genes, alternative phenotype names, descriptions, and references
- 11. Annotations for Cancer ▪ CIViC (updated monthly) – features 634 variants - Variant Clinical Evidence Summaries & Region Clinical Evidence Summaries (exon and gene deletions/gains). - CIViC accepts public knowledge contributions but requires that experts review these submissions. - Evidence statements & records (response to therapy, prognostic, diagnostic, or predisposing for cancer. ▪ COSMIC Mutations Left Aligned 71 – features 2,151,007 variants - Catalogs somatic variants discovered in cancer samples. - Provides details about the frequency, tumor types and histology - Provides gene level annotations with relevant summary and curated oncology details - COSMIC breaks out each sample-variant pair into a record - VarSeq provides the fields in COSMIC with relevant hyperlinks.
- 12. Annotations for Cancer ▪ ICGC Simple Somatic Mutations 22 – features 47,879,813 variants - Collection of data from across 89 committed projects currently - Goals related to quality - Ensure that most cancer genes with frequency of >3% are discovered - High sequence level resolution - High quality standards - Control based data (tumor/normal pairs) - Somatic mutations in 21 primary cancer sites in 21k donors - Primary Site and affected donor frequency.
- 13. Annotations for Cancer ▪ OncoMD (updated Monthly) - Variant and Gene Summaries - Cancer related genes (onco and tumor suppressor genes) - Effect on protein - Publications/studies associated with the variant - Drug Targeting Mutations - List of open clinical trials
- 14. Frequency Tracks – From ExAC to gnomAD ▪ ExAC – features 10,324,246 variants ▪ gnomAD – features 17,439,605 variants - Major changes from ExAC – - Genome (15,496) and exome (123,136) - Gnomad is a new product (data processing perspective) - Cohort wider selection of ethnicities (Ashkenazi Jewish) - New/novel ways of flagging low quality variants
- 15. Frequency Tracks cont… – NHLBI and 1kgenome ▪ NHLBI - Features 2,029,948 variants - Current release is taken from 6503 samples - Focus on heart, lung, and blood disorders ▪ 1kGenome - Features 85,823,495 variants - Project ran from 2008 to 2015. One of the largest catalogs - Goal: ID variants with at least 1% frequencies
- 16. Functional Prediction Annotations ▪ dbNSFP Functional Predictions and Scores 3.0 – features 82,832,027 variants - 14 classifier/prediction algorithms: SIFT, Polyphen2, LRT, MutationTaster, MutationAssessor, FATHMM, MetaSVM, MetaLR, VEST, PROVEAN, FATHMM-MKL coding and fitCons - 8 conservation scores (phyloP46way_primate, phyloP46way_placental, phyloP100way_vertebrate, phastCons46way_primate, phastCons46way_placental, phastCons100way_veterbrate, GERP++ and SiPhy) ▪ dbscSNV Splice Altering Predictions 1.1 – features 15,030,435 variants - Predicts all snps −3 to +8 at the 5’ splice site and −12 to +2 at the 3’ splice site - Two ensemble predictions scores, I can provide cut-offs for 95% specificity in calling splice altering mutations
- 17. Functional Prediction Annotations cont… ▪ GWAS Catalog 2015-12-29 – features 22,373 variants - Identifies location of SNPs - Lists associated publication where the SNP (assay <100,000 SNPS) ▪ CADD – Interpreting Variants of Clinical Significance - Provides C-scores of “deleteriousness” for SNVs and indels in the human genome. - Also scores coding/non-coding regions - Score based on multiple annotation types: - Conservation, population frequency, regulatory, functional/structural
- 18. Transcript Annotations ▪ RefSeq – features 84,950 variants - Includes genomic DNA, transcripts, and proteins - Effect of transcripts - HGVS notation - Sequence ontology of variant in all transcripts in database ▪ Ensembl – features 215,170 variants - Joint effort from EBI and WTSI - Annotate, analyze, and display