Author Archives: Darby Kammeraad

Darby Kammeraad

About Darby Kammeraad

Darby Kammeraad is the Field Application Scientist at Golden Helix, joining the team in April of 2017. Darby graduated in 2016 with a master’s degree in Plant Sciences from Montana State University, where he also received his bachelor’s degree in Plant Biotechnology. Darby works on customer support and training. When not in the office, Darby is learning how to play guitar, hunting, fishing, snowboarding, traveling or working on a new recipe in the kitchen.

Webcast Recap: VSWarehouse: Tracking Changing Variant Evidence and Classifications

         March 11, 2021
VSWarehouse

Thank you to those who attended the recent webcast, “VSWarehouse: Tracking Changing Variant Evidence and Classifications”. For those who could not attend but wish to watch, here is a link to the recording. The webcast covered some general highlights of VSWarehouse value but also presented some specific capabilities covering the ClinVar classification tracker. Golden Helix provides complete solutions to handle… Read more »

New Mendel Error Algorithm in VarSeq

         March 2, 2021
mendel algorithm

In many cases, VarSeq users typically run single trio projects or perhaps an extended family project. Not only are all the inheritance model algorithms available in the VarSeq software to capture de novo, dominant, or recessively inherited variants but there are a number of quality control fields to help ensure the pedigree was set up properly. The last thing any… Read more »

New CNV Tools with VarSeq 2.2.2 Update

         February 16, 2021
copy number variant algorithm

Our latest release of the VarSeq software has had a major upgrade with the addition of the new CNV ACMG guidelines! Here are some recent webcasts we’ve given covering the new guideline tool: Family-Based Workflows in VarSeq and VSClinical A User’s Perspective: ACMG Guidelines for CNVs in VSClinical Not only does VarSeq 2.2.2 come with the new guideline tool, but… Read more »

New Annotation: GnomAD – Gene Constraints

         February 10, 2021
GnomAd screenshot

VarSeq recently received major upgrades in a wide range of areas, one of these areas includes adding annotations such as GnomAD. This includes new fundamental methods of CNV ACMG guideline processing but also a large number of small additions in annotations. One addition is the application of gnomADs – Gene Constraints. This provides various metrics for pathogenicity on a per… Read more »

VSClinical: Defining Sample Phenotypes

         January 20, 2021

Our recent release of VarSeq 2.2.2 comes with a long list of upgrades and new features. In this blog post, we will demonstrate how defining sample phenotypes are available in VSClinical. One noticeable change is the ACMG guideline variant evaluation in VSClinical. Not only has this interface added CNV guideline evaluation, simplified the reporting process with embedded Microsoft Word and… Read more »

Updated Annotations: RefSeq with MANE Select Transcripts

         December 17, 2020

Our upcoming release of VarSeq is one of the largest we’ve ever had with our software! It comes with an extensive list of polishes and new features like our recently mentioned ACMG CNV classifier and a redesigned reporting interface with updated templates. Additionally, this new release is also paired with some major upgrades to our list of new and supported… Read more »

Loss-of-Function Splice Variant in MTHFR

         November 26, 2020

In this blog post, I will be analyzing a loss-of-function splice variant in MTHFR using VarSeq. In the search for clinically relevant variants contributing to rare disorders, efficient filtering strategies are an important step in eliminating disinteresting variants. However, any applied filters must also ensure no interesting variants inadvertently get filtered out. Golden Helix provides the tools to complete this… Read more »

New Algorithm: Variants Matching Current Sample

         November 12, 2020
New Algorithm: Variants Matching Current Sample

Those of you who have been attending our recent webcasts have learned about our upcoming VarSeq release. A part of that release will be an additional algorithm that will annotate variants matching the current sample. If you are not familiar with these webcasts, here are several on-demand webcasts I recommend to get you familiar with these new features: Evaluating Copy… Read more »

Webcast Recap: A User’s Perspective: ACMG Guidelines for CNVs in VSClinical

         October 16, 2020

Our previous webcast from VP Gabe Rudy in September exposed us to some fundamentals of this years’ updated Technical standards for the interpretation and reporting of constitutional copy-number variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics (ACMG) and the Clinical Genome Resource (ClinGen). This recent webcast was dedicated to breaking down these new guidelines… Read more »

VarSeq’s NGS Panel Workflow: COL4A2 Variant from an Intellectual Disability Panel

         October 1, 2020

A common discussion with our customers includes the challenges with the tertiary stage of analyzing next-gen sequencing data. This is the stage where all data from gene panels, exome, or whole genome scale pass through filters to quickly isolate the clinically relevant variant contributing to a patient disorder. Golden Helix has recognized these challenges in the scale of data and… Read more »

Advanced Plotting Capabilities with GenomeBrowse

         September 22, 2020

In this blog update, I’ll be walking you through some of the advanced plotting capabilities with GenomeBrowse. The strategy with any next-gen sequencing analysis is to filter down to interesting variants for either research or clinical conclusion. Golden Helix produces powerful software specifically tailored for this efficient and comprehensive search for interesting and clinically relevant variants. One additional advantage of… Read more »

Golden Helix’s NGS-Solutions for Clinical Variant Analysis: VSWarehouse

         August 27, 2020
VSWarehouse Updates

We have now reached the final blog of the NGS-Solutions for Clinical Variant Analysis series. Part I of this series explored the capture of variant classifications in the VSClinical environment when following the ACMG and AMP guidelines. Part II was similar in content but for the capture of clinically relevant copy number variants as well as using a CNV catalog… Read more »

Golden Helix’s NGS-Solutions for Clinical Variant Analysis: VarSeq’s CNV Frequency Assessment Catalogs

         August 20, 2020

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 »

Golden Helix’s NGS-Solutions for Clinical Variant Analysis: VSClinical’s Assessment Catalog

         August 14, 2020

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 »

Building Gene Panels in VarSeq: Missense Variant in TP53

         August 6, 2020

Golden Helix software provides huge analytic gain in handling large-scale genomic data. For example, a number of VarSeq users run cohort projects of whole genome level data processing hundreds of millions of variants at a time. However, many of our users are running gene panel level data for custom panels related to cancer (both hereditary and somatic), autism, cardiac, and… Read more »

Webcast Recap: Next-Gen Sequencing of the SARS-CoV-2 Virus with Golden Helix

         May 13, 2020

Thank you to everyone who joined me for our latest webcast, “Next-Gen Sequencing of the SARS-CoV-2 Virus with Golden Helix.” If you missed the live event and are interested in knowing what we talked about, you may access the recorded event below: Our Live Q&A generated a lot of great questions. Unfortunately, we were unable to answer them all, but… Read more »

Powerful Cohort Analysis with VarSeq’s Count Alleles Algorithm

         February 25, 2020

Although VarSeq is intentionally designed to be a clinical NGS pipeline tool able to run a handful or even single samples through, we have many users who run large cohort style studies with the tool as well. One common use is to compare case/control data to isolate variants shared among affected individuals and exclude those in unaffected. One incredibly powerful… Read more »

VarSeq CNV Caller Tutorial

         February 20, 2020

Since the initial release of the CNV algorithms in VarSeq, our team has created a variety of content to help users get started with building their CNV projects. In our webcast library, you can find a few of our recent webcasts in 2019 covering CNV workflows and validation: Clinical Validation of Copy Number Variants Using the AMP Guidelines CNV Annotations:… Read more »

Somatic Variant Calling with Sentieon: Customizations

         December 10, 2019
Sentieon

The first two blogs in this series covered Sentieon’s somatic variant calling from Tumor with Normal (Part I) and Tumor without Normal (Part II). In addition to providing multiple somatic variant calling processes, users also have access to high-sensitivity scripts and full support for the GRCh38 reference assembly. Without going into excessive detail, this final blog of the series will… Read more »