Variant interpretation is a critical aspect of any clinical NGS workflow. VarSeq assessment catalogs are a tool used to save variants and associated variant information for easy tracking and retrieval of completed variant interpretations. As variant interpretations stack up and classifications are saved, storing in assessment catalogs makes it easy to automatically fill in a previous interpretation if the variant… Read more »
Assessment catalogs are a way for VarSeq users to save variants and variant information for clinically relevant variants, so when you come across this variant again in another sample, all of the work to analyze and classify the variant is already done! But there is more than meets to the eye when it comes to using assessments in VarSeq. Being… Read more »
When doing clinical variant analysis, it is often essential to keep track of the variants that are encountered in each sample, their pathogenic or oncogenic classifications, which individual created or saved an interpretation, and when. For this purpose, VarSeq prompts VSClinical users to create default assessment catalogs in which to store variants and other events. However, we are aware that… Read more »
Discover how to enhance collaboration in VSClinical by sharing variant scores and assessment catalogs through the strategic relocation of the AppData folder. A subtle but powerful utility of VSClinical concerns the ability to share variant scores between users on the same account. What I mean by that is, leveraging the location of the AppData folder, so that users are writing… Read more »
Learn how VarSeq revolutionizes NGS workflows by enabling the integration of comprehensive internal databases, allowing bioinformaticians to create custom pipelines and maximize data analysis efficiency. Are you a current (or future) VarSeq user with a perfect, comprehensive, internal database you simply can’t part with and can’t replicate? Do you dream of coalescing many disparate workflows into a consistent, reliable pipeline?… Read more »
Global population frequency catalogs like 1kG Phase 3, gnomAD, DGV, and others are excellent resources for identifying rare variants in your copy number variant (CNV) analysis. However, they are not exhaustive, and the reality is a lot of variants that are missing from global population frequency catalogs are still common variants. At the same time, CNVs that are identified by… Read more »
In this blog, we will be covering new assessment catalogs and how they work to improve saving and tracking variant interpretations. VarSeq is a variant analysis tool that effectively analyzes single nucleotide (SNVs) and copy number variants (CNVs) in both cancer and germline workflows. Because VarSeq enables such diverse variant analysis, there are many research labs and institutions that evaluate… Read more »
Our previous webcast demonstrated some of the new functionalities of VSClinical, including the ability to add ACMG frequency sources for the ACMG BA1, BS1, and PM2 criteria. This new feature was spurred by the feedback from our users, which requested supporting frequency tracks other than gnomAD Exomes and 1kG Phase3. Now, users can implement population catalogs to VSClinical such as… Read more »
Our software solutions and partners have brought dramatic improvements to the secondary and tertiary analysis stages of variant evaluation. Regarding secondary analysis, we’ve discussed increased efficiencies in speed and overall accuracy in the variant calling process with Sentieon. On the tertiary side, we have explored numerous workflows in VarSeq highlighting filtration to clinically relevant variants, as well as the automated… Read more »
It doesn’t take much effort to find articles discussing the value of Next-Generation Sequencing (NGS). There is a consistent tone amongst authors that implementing NGS pipelines are critical for clinical efficiency in both hereditary disorders and somatic. However, NGS strategies do not come without their own challenges. Challenges include not only the detection and calling of high quality/probability variants from… Read more »
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 »
We love when our viewers send questions in during the webcast but unfortunately we can’t answer all of them during the time allotted! If you asked a question see below for answers, or if after viewing, you have any questions that weren’t asked, please feel free to send those over to support@goldenhelix.com. Does this work for FFPE derived DNA or ctDNA?… Read more »
VarSeq Updated with CNV Annotations, CNV PhoRank, and Region Assessment Catalogs This year we have released multiple advances to support CNV analysis in VarSeq, expanding our target region based VS-CNV caller to handle exomes and low-depth genomes as well as additional supporting algorithms like calling Loss of Heterozygosity regions. To top this off, VarSeq 1.4.7 has been shipped with many… Read more »
Variant interpretation is an integral part of any workflow that results in some decisions being made about the validity and suspected functional impact of a variant in a given sample and their presenting phenotypes. The VarSeq Assessment Catalog functionality is designed to assist the VarSeq user in streamlining this process. To include this functionality in your workflow, you will first… Read more »
Since its early release in early 2012, the population frequencies from the GO Exome Sequencing Project (ESP) – from the National Heart, Lung and Blood Institute (NHLBI) have been a staple of the genomic community. With the recent release of ExAC exome variant frequencies, the ESP has been surpassed as the largest cohort of publicly available variant frequencies (by nearly… Read more »
To say the announcement of Dan MacArthur’s group’s release of the Exome Aggregation Consortium (ExAC) data was highly anticipated at ASHG 2014 would be an understatement. Basically, there were two types of talks at ASHG. Those that proceeded the official ExAC release talk and referred to it, and those that followed the talk and referred to it. Why is this… Read more »
Thank you to all our viewers who attended our webcast last week on VarSeq 2.5.0: VSClinical AMP Workflow from the User Perspective. If you did not get a chance to attend but would still like to see the new upgrades to VarSeq 2.5.0, please visit our website here. Overall, this webcast highlighted the versatility of VarSeq, demonstrating both a Tumor-Normal… Read more »
As many of you may already know, we just released VarSeq version 2.5.0 this month! We have talked about the two headlining features a bunch, but we have not focused on what else has changed in VarSeq 2.5.0 that might also strike your fancy. For those of you who might just now be tuning into the hype around 2.5.0, it… Read more »
Recently, a Golden Helix customer reached out to support for advice on how to validate the variant scoring between two different VarSeq users. Here we break down one possible solution as an opportunity to showcase the utility of both the Latest Sample Assessment function and an alternative way to leverage the Compute Fields function. To set up this validation project,… Read more »
Traditionally genetic tests in cancer have focused on small gene panels that restrict their analysis to a small number of well-studied cancer genes. However, as sequencing costs have decreased, many clinical laboratories have embraced comprehensive genomic profiling tests that rely on whole exome and whole genome next-generation sequencing (NGS) workflows, which can detect millions of high-quality variants for a single… Read more »
