Author Archives: Cody Sarrazin

Cody Sarrazin

About Cody Sarrazin

Cody Sarrazin, Ph.D is a Product Specialist Scientist at Golden Helix, joining the team in May of 2017. Cody graduated in 2014 with a doctorate degree in Mechanical Engineering from the University of Utah. Cody works on product testing and data curation. When not in the office, Cody is hanging out in the mountains or tinkering on a new project.

All New VSClinical AMP Workflow Tutorial

We have recently added a tutorial to help introduce customers to the ease and utility of the AMP Guidelines incorporated in VarSeq’s VSClinical package. The AMP Guidelines allow users to sort through available clinical evidence in a streamlined fashion to arrive at final classification and interpretation and then transfer that information into a clinical report. And the AMP Guidelines also… Read more »

Updating Somatic Annotation Catalogs: ICGC and COSMIC

Golden Helix works to keep incorporating and updating great somatic annotation catalogs for our VSClinical users. We currently have the updated version of one of the largest cancer databases from the International Cancer Genome Consortium, or ICGC. Version 28 has been improved by integrating ClinVar and CIViC clinical annotations, and as always, increasing the number of mutations listed. The current… Read more »

VarSeq 2.2.0 Release Notes

      Cody Sarrazin    October 23, 2019    No Comments on VarSeq 2.2.0 Release Notes
ClinVar

VarSeq 2.2.0 was released today and this a stable release full of upgrades and polishes. Some of the newer features include the ability to store and include AMP Cancer assessment catalogs on VSWarehouse, quicker accessibility to common annotations plotted in GenomeBrowse, and the addition of all of our standard templates for the GRCh38 genome assembly. Many of the polishes were… Read more »

Updated Annotations: The new and improved gnomAD 2.1.1

The Broad Institute team led by Dan MacArthur announced the release of gnomAD version 2.1 at last year’s ASHG conference. This new version boasted data from 125,748 exomes and 15,708 genomes, but the greater updates were the improved QC refinement and more discrete sub-population break downs. Although the majority of samples were counted in the previous 2.0.2 release, the additional… Read more »

VarSeq Variant Annotation Normalization

Smoothing Hurdles into Speed Bumps when creating Annotation Sources Although most researchers assume that getting the pile of VCF sequence files is the largest hurdle in moving towards an analysis, there still exists the looming step of normalizing the variant calls in annotation sources to make variant comparison easier. In this ever-refining field of study, VarSeq continually works to increase… Read more »

VarSeq PhoRank Part: 2 Sample PhoRank Gene Ranking

The PhoRank tool in VarSeq is further explored in this post by looking at the sample-specific capability. VarSeq PhoRank Part: 1 Variant Phorank Gene Ranking showed how the PhoRank algorithm could be applied to all the variants in a VarSeq project, regardless of the number of (or difference in) samples. There is another PhoRank algorithm in VarSeq that allows the… Read more »

VarSeq PhoRank Part 1: Variant PhoRank Gene Ranking

One of the main goals of clinical genomic labs is to identify problematic variants in affected individuals. One tool to assist in this search is the phenotype driven variant ontological re-ranking tool in VarSeq called PhoRank. A common situation facing clinicians is sorting through thousands of variants provided by an individual’s exome data (or possibly the individual’s nuclear family exome… Read more »

Our Philosophy on Quality in Product Testing and Development

High product quality is a foundational characteristic of a useful and successful product. Quality testing, therefore, is a necessary, albeit an open-ended task. It can at times seem a limitless undertaking in the present using experience from the past to improve the future. Nonetheless, it is approached as a development stage at Golden Helix that is just as essential as… Read more »

SVS 8.8.3 Release

      Cody Sarrazin    November 26, 2018    2 Comments on SVS 8.8.3 Release
gene ranking

The SVS 8.8.3 release was created to incorporate some of the CNV, genome assembly control, and splice site capabilities that are present in VarSeq, as well as clean up and streamline the GWAS workflows (like when using Mixed Linear Model algorithms) for a better user experience. New Product Add-Ons for SVS GoldenHelix SVS now includes in-silico splice site, functional prediction… Read more »

Using the GRCh38 Reference Assembly for Clinical Interpretation in VSClinical – Webcast Recap

VCF file format

Even though GRCh37 is currently the most widely used human genome assembly, GRCh38 provides a more complete human reference genome, offers more accurate genomic analysis, and includes centromere and mitochondrial information. However, we’re getting ahead of ourselves. Perhaps start with how we got here. The Human Genome Project started this all off with the world’s largest biological collaboration project in… Read more »

New & Improved ClinVar Annotations

ClinVar

ClinVar is the NCBI variant database that focuses on the categorizing of variant alleles and their interpretation from a clinical standpoint. This has made it a great resource, especially for those seeking variant allele disease correlations and pathogenicity. And this all worked fairly well, but it was changed… Previously, the ClinVar variant track annotation took some time to curate due… Read more »

How we’re curating OMIM: It’s not as easy as you think

Relating human phenotypes to genotypes is the name of the game with OMIM, and as their website says, “is intended for use primarily by physicians and other professionals concerned with genetic disorders, by genetics researchers, and by advanced students in science and medicine.” The Online Mendelian Inheritance in Man (or OMIM) was originally created by Dr. Victor A. McKusick in… Read more »

New and Updated Annotations

      Cody Sarrazin    December 7, 2017    No Comments on New and Updated Annotations
Genotype Imputation

Golden Helix is excited to announce a new round of novel and updated annotations; including a frequency track, a region track, and a gene track. All three of these tracks were created with the use of VarSeq and its Convert Wizard functionality. First, the expansive 1000 genomes track (1kG) has been updated to include sub-population allele frequencies and heterozygous and… Read more »

Golden Helix, Inc. – Your Annotation Curation Station

The current reduced cost and increase availability of genome sequencing has been making academics, clinicians and individuals alike excited with the possibility of increased research depth, diagnosing capability and personal curiosity. And although a freshly sequenced genome is chock-full of tasty letter snippets, the real revelation and education occurs when comparing to an annotation foundation. In this post, I’ll review… Read more »

New and Updated Annotation Tracks Now Available!

In recent months we have been updating our public annotation library to include the most recent versions of existing sources, as well as include new sources. All of these annotation sources are compatible with our three major products, VarSeq, SVS, and GenomeBrowse, and can be used for visualization, annotation, and filtering. dbNSFP NS Functional Predictions 2.8, GHI and dbNSFP Predictions… Read more »