Genomic Precision

 A SeraCare blog focused on precision medicine and advanced clinical diagnostics

If I Call Out of Tune, Would Mutations Stand Up and Walk Out on Me?

Posted by Matthew Butler on Aug 9, 2018 10:15:00 AM

One of several important steps in next-generation sequencing (NGS) is tuning the many options provided by mutation callers. Providing values for options configures the signal to noise ratio of the impending mutation calls. In theory, providing values that increase the stringency of mutation calls will reduce the number of false positive calls and thus enrich for true positives. In practice, increasing stringency can eliminate true positives.

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Topics: SeraSeq, NGS reference materials, Clinical NGS Assays

How A New Generation of ctDNA Reference Standards Are Enabling the Promise of Precision Medicine

Posted by Omo Clement, Ph.D. on Jun 14, 2018 10:00:00 AM

An important goal in cancer disease management is early detection. When detected early, disease progression can be significantly mitigated with a plethora of options (targeted therapy, chemotherapy, surgery, etc.) available to medical practitioners, to afford progression free survival and a higher quality of life. A great promise of liquid biopsies is the possibility of early detection of cancer long before clear evidence of lesions and tumor growth observable by imaging or other techniques.1 As proxy for solid tissue biopsies, plasma-based liquid biopsy application is rapidly gaining traction in cancer disease diagnosis, progression, monitoring, and in predicting resistance to treatment options.2

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Topics: ctDNA, SeraSeq, NGS assays, liquid biopsy, ccfDNA, NGS reference materials, Clinical NGS Assays, Lung Cancer, colon cancer

FAQ: What to do when your NGS assay fails to detect a variant contained in Seraseq Reference Materials?

Posted by Catherine Huang on Jun 11, 2018 1:15:00 PM

Highly multiplexed reference materials are particularly valuable when developing and optimizing new NGS assays because they allow you to evaluate the performance of your assay across a large number of variants including different variant types (SNVs, indels, homopolymeric variants, etc.) and contexts. However, it can be frustrating when a variant in the reference material is not detected, or not detected at the expected variant allele frequency. Troubleshooting such issues can give new insight into the performance of the assay. Here we share some stories from Seraseq™ users where the lack of detection of one or more variants at the expected levels helped them improve their assay or set more appropriate QC thresholds.

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Topics: SeraSeq, NGS reference materials, Clinical NGS Assays

Sensitive ctDNA Assays are Required for Minimal Residual Cancer Detection

Posted by Russell Garlick on May 29, 2018 3:10:00 PM

The 11th International Symposium on Minimal Residual Cancer was held this month and much of the conference was devoted to new minimally invasive methods for circulating tumor cell enrichment and or the analysis of circulating tumor DNA. Today’s clinical needs are to measure disease burden, track mutations over time, or to detect early resistance and all of these applications require extremely sensitive, robust assays.

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Topics: ctDNA, SeraSeq, DNA

Reliable Interpretation of NGS Data: New Poster Talk Video

Posted by Cynthia Hendrickson, CEO Directed Genomics on Feb 1, 2018 8:00:00 AM

The ability to rapidly and effectively evaluate the performance of customized next-generation sequencing (NGS) panels is critical to provide high-quality sequencing solutions to customers. New England Biolabs®, together with Directed Genomics®, is developing a new offering, NEBNext Direct® Custom Ready Panels, which will allow researchers to select from a large library of genes for which baits have been developed and optimized, thus enabling rapid deployment of customized target-enrichment panels. Directed Genomics has been collaborating with SeraCare Life Sciences in order to streamline the optimization and characterization of NEBNext Direct target enrichment panels. 

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Topics: NGS, SeraSeq, NGS assays, Variant Allele Frequencies, highly-multiplexed reference material, NGS reference materials, AMP2017, reference materials

Reference Materials for Your Unique Reproducibility Needs

The distinction between accuracy and precision.

Posted by Matt Ryder on Oct 12, 2016 11:06:00 AM

If you took a university introductory statistics course, you may have learned the distinction between accuracy and precision.  It may likely have been presented with an archery analogy, where ‘Accurate’ was represented by arrows loosely clustered around the target’s bull’s-eye, ‘Precise’ was shown as a tight grouping displaced from the center, and ‘Accurate and Precise’ was depicted as what every archer aims for, a tight grouping directly at the bull’s-eye.  Suddenly, words that are used interchangeably in everyday conversation took on dramatically different meanings.


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Topics: NGS, Precision Medicine, FDA, Reference Material, SeraSeq, NGS assays, Tumor Mutation Mix, Sequencing quality control, Good Manufacturing Practices, variants, allele frequencies

Circulating Tumor DNA Poster at Keystone Symposium

Poster Titled “New Technical Approach to Construct ctDNA Materials for use in Characterizing, Developing and Validating Plasma Assays”, available for download

Posted by Dale Yuzuki on Feb 11, 2016 10:57:00 AM

The Keystone Symposia is an organization with 44 years of history on specialized topics across the fields of molecular and cellular biology. This week in Banff, Alberta, Canada is a Keystone Symposia conference called The Cancer Genome, along with a joint meeting on Genomics and Personalized Medicine. Their Twitter description (@KeystoneSymp) describes the Keystone organization as “A catalyst for accelerating life science discovery and connecting scientists within and across disciplines at symposia worldwide”.

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Topics: Cancer Test, Circulating Tumor DNA, Precision Medicine, Variation, Mutation, ctDNA, Test Development, Reference Material, Oncology, SeraSeq

Sanger versus Next-Generation Sequencing Infographic

A handy infographic to compare the first-generation (Sanger) and next-generation sequencing (NGS) technologies

Posted by Dale Yuzuki on Dec 16, 2015 10:52:00 AM

It is hard to believe that next-generation sequencing has only been around for a little over ten years, but has had a profound impact on many frontiers of basic and applied genetics. To contrast the first-generation (Sanger sequencing by capillary electrophoresis) and the next-generation sequencing (NGS) approaches, we provide you with this infographic.

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Topics: NGS, Reference Material, SeraSeq

Video Interview: Developing Aneuploidy Reference Materials

Interview with Dr. Seth Harkins, Principal R&D Scientist

Posted by Dale Yuzuki on Nov 24, 2015 10:50:00 AM

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Topics: Clinical Testing, Precision Medicine, NIPS, Nipt, Maternal Health, Test Development, Reference Material, SeraSeq, Non-Invasive Prenatal Testing

Posters from AMP 2015 Available for Download

The 2015 Association for Molecular Pathology (Austin TX) posters about Reference material stabilization technology, recombinant virus, fetal trisomy patient-like material, and somatic tumor mutation profiling.

Posted by Dale Yuzuki on Nov 9, 2015 10:48:00 AM

The Association for Molecular Pathology (AMP) was founded 'to provide structure and leadership to the emerging field of molecular diagnostics', and publishes the Journal of Molecular Diagnostics.

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Topics: Cancer, LDT, Molecular Diagnostics, Accuplex, NIPS, Nipt, Prenatal Test, Posters, Standard, Oncology, SeraSeq, Amp, Conference, Molecular Pathology, Recombinant Virus

 
 

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