Author Archives: Gabe Rudy

About Gabe Rudy

Meet Gabe Rudy, GHI’s Vice President of Product and Engineering and team member since 2002. Gabe thrives in the dynamic and fast-changing field of bioinformatics and genetic analysis. Leading a killer team of Computer Scientists and Statisticians in building powerful products and providing world-class support, Gabe puts his passion into enabling Golden Helix’s customers to accelerate their research. When not reading or blogging, Gabe enjoys the outdoor Montana lifestyle. But most importantly, Gabe truly loves spending time with his sons, daughter, and wife. Follow Gabe on Twitter @gabeinformatics.


Exaggerating your number of controls or being precise? “Variant not found in over 10,000 chromosomes from EVS…”

         June 22, 2012

Reading through the last release of AJHG I saw a couple papers mention that the putative rare variant they were investigating was “not present in over 10,000 control chromosomes from the EVS”. My first reaction was, “What? Do they mean the NHLBI 5400 Exome Sequencing Project? They only have 5,400 exomes not over 10,000! I wonder if there is some… Read more »

Admixture in Reference Populations: 1000 Genomes Uses African Americans in African Reference Group

         June 22, 2012

Today I ran into an interesting fact about how a prolifically used catalog of population controls classifies African Americans with potential impacts on research outcomes. The 1000 Genomes Project is arguably our best common set of controls used in genomic studies. They recently finished what was termed as “Phase 1” of the project, and they have been releasing full sets… Read more »

Have We Wasted 7 Years and $100 Million Dollars on GWAS Studies?

         June 21, 2012

Type 2 Diabetes, Rheumatoid Arthritis, Obesity, Chrohn’s Diseases and Coronary Heart Disease are examples of common, chronic diseases that have a significant genetic component. It should be no surprise that these diseases have been the target of much genetic research. Yet over the past decade, the tools of our research efforts have failed to unravel the complete biological architecture of… Read more »

DNA Variant Analysis of Complete Genomics’ Next-Generation Sequencing Data

         August 17, 2011

As I’ve mentioned in previous blog posts, one of the great aspects of our scientific community is the sharing of public data. With a mission of providing powerful and accurate tools to researchers, we at at Golden Helix especially appreciate the value of having rich and extensive public data to test and calibrate those tools. Public data allow us to… Read more »

NGS Tools and Formats for Secondary Analysis: A Primer

         April 20, 2011

In a series of previous blog posts, I gave an overview of Next Generation Sequencing trends and technologies. In Part Two of the three part series, the range of steps and programs used in the bioinfomatics of NGS data was defined as primary, secondary and tertiary analysis. In Part Three I went into more details on the needs and workflows… Read more »

I Want a GPU for Computational Analysis! Which One Should I Get?

         April 14, 2011

A GPU can produce an enormous boost in performance for many scientific computing applications. Since we announced the availability of SNP & Variation Suite’s incorporation of GPUs to dramatically speed up copy number segmentation, we’ve received numerous inquiries on recommendations for what GPU to purchase. Unfortunately the technical terminology and choices can be a bit confusing. In this article I… Read more »

A Hitchhiker’s Guide to Next Generation Sequencing – Part 3

         January 19, 2011

The advances in DNA sequencing are another magnificent technological revolution that we’re all excited to be a part of. Similar to how the technology of microprocessors enabled the personalization of computers, or how the new paradigms of web 2.0 redefined how we use the internet, high-throughput sequencing machines are defining and driving a new era of biology. Biologists, geneticists, clinicians,… Read more »

A Hitchhiker’s Guide to Next Generation Sequencing – Part 2

         December 9, 2010

When you think about the cost of doing genetic research, it’s no secret that the complexity of bioinformatics has been making data analysis a larger and larger portion of the total cost of a given project or study. With next-gen sequencing data, this reality is rapidly setting in. In fact, if it hasn’t already, it’s been commonly suggested that the… Read more »

Video Graphics and Genomics: A Real Game Changer?

         October 20, 2010

Why should a genetic researcher care about the latest in video gaming technology? The answer is video graphics cards or Graphics Processing Units (GPUs). For certain computational tasks, a single GPU can perform as well as an entire cluster of CPUs for only a fraction of the cost. And because video gaming has grown into a highly competitive multi-billion dollar… Read more »

Enhanced ROH Analysis Improves Effectiveness to Identify Rare, Penetrant Recessive Loci

         July 22, 2010

In the paper Runs of homozygosity reveal highly penetrant recessive loci in schizophrenia, Todd Lencz, Ph.D. introduced a new way of doing association testing using SNP microarray platforms. The method, which he termed “whole genome homozygosity association”, first identifies patterned clusters of SNPs demonstrating extended homozygosity (runs of homozygosity or “ROHs”) and then employs both genome-wide and regionally-specific statistical tests… Read more »