On June 7, 2016 Transgenomic, Inc. (TBIO), (NASDAQ: TBIO), reported that it is unveiling new data at the American Society for Clinical Oncology (ASCO) (Free ASCO Whitepaper) 2016 Annual Meeting further confirming the utility, speed and efficiency of its ICE COLD-PCR (ICP) technology for liquid biopsy detection of tumor mutations (Press release, Transgenomic, JUN 7, 2016, View Source [SID:1234513122]). The company is distributing a new educational handout at the meeting highlighting expanded concordance data showing that ICP plasma-based liquid biopsies detect all of the mutations identified using conventional tissue samples and also detect additional tumor alterations missed by conventional methods. Another educational handout presents data showing how use of ICP with Thermo Fisher’s Veriti thermal cycler expedites the testing of liquid biopsy samples, producing accurate results rapidly and efficiently.

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TBIO President and CEO Paul Kinnon commented, "As the highest profile cancer meeting of the year, ASCO (Free ASCO Whitepaper) is an excellent venue for presenting our expanded concordance study data further confirming the accuracy and superior performance of ICE COLD-PCR liquid biopsies for tumor detection and monitoring. We also are unveiling new study data highlighting the speed and efficiency of our ICP enrichment technology when used with a leading thermal cycler. We believe ICP’s accuracy, versatility and ease of use have the potential to enable wide adoption of routine genomic testing in cancer research and patient care, and the new data we are discussing at ASCO (Free ASCO Whitepaper) further supports the technology’s near-term clinical and commercial potential."

At the ASCO (Free ASCO Whitepaper) meeting, Transgenomic is distributing an educational report, "CRC Concordance Update – Stage IV CRC Sample Analysis with ICE COLD-PCRTM," which describes the results of an expanded concordance study assessing the ability of its multiplexed ICE COLD-PCR technology to detect a key tumor mutation in matched plasma samples compared to detection in the same patients using tissue and plasma samples analyzed using conventional Sanger sequencing methods. The expanded study included 32 patients with late stage colorectal cancer. Use of ICP-enriched testing resulted in an overall 96.9% concordance rate, with a 94.7% concordance rate for the mutation positive samples. In addition, actionable mutations were detected in two patient samples analyzed using ICP-enriched methods that were missed using conventional PCR with Sanger sequencing. Notably, the missed mutations were detected by ICP in both the plasma and tissue samples from these patients.

The researchers conclude that the high concordance rates achieved in the study and the ability of the ICP-enriched approach to detect relevant mutations missed by conventional methods support the clinical validity and utility of ICP-based liquid and tissue biopsies for mutation detection and monitoring in cancer patients.

Anil Vachani, MD, MS, Associate Professor of Medicine at the Hospital of the University of Pennsylvania and the Veteran’s Administration Medical Center and an investigator working with TBIO, commented, "The ability to accurately and efficiently detect tumor mutations from non-invasive blood-based patient samples is essential for realizing the potential of precision medicine approaches to transform cancer treatment. I welcome studies that increase our confidence in the validity of new technologies such as ICE COLD-PCR to help enable use of targeted and other precision treatment approaches."

A second TBIO educational handout, "Simple and Effective Clinical Testing Protocol Using ICE COLD-PCRTM across Targeted Cancer Gene Panels using the Veriti Thermal Cycler and Sanger Sequencing," details a new study that demonstrates how combining multiplexed ICE COLD-PCR with the Thermo Fisher Veriti thermal cycler expedites mutation detection and monitoring using liquid biopsy samples. It shows that with the Veriti thermal cycler, ICE COLD-PCR amplifications can be grouped based on temperature and primer annealing parameters to enable multiple amplicon enrichments in a single thermal cycler run. By combining the flexibility of the Veriti thermal cycler, the superior enrichment power of ICP and the rapid turnaround time of Sanger sequencing, liquid biopsy test results were generated in about four days, compared to total turnaround times of about four weeks for conventional tissue biopsies. Rapid results are an important advantage in cancer clinical testing and patient monitoring, where critical patient treatment decisions increasingly rely on up-to-date genomic data.

The study researchers note too that these results provide an opportunity for molecular diagnostic laboratories to reevaluate the use of Sanger sequencing for confirmation of mutation detection results from next-generation sequencing (NGS) platforms, and point out that by using this protocol, Sanger platforms can also be re-considered for front line mutation detection, with the potential to produce accurate results more rapidly and cost effectively than NGS platforms.

ICE COLD-PCR achieves its ultra-high sensitivity through selective amplification of mutant DNA. The result is up to a 500-fold increase in sensitivity in identifying mutations with the most precise sequence alteration detection rates available. ICP was originally developed by the laboratory of Dr. Mike Makrigiorgos at the Dana-Farber Cancer Institute, which has exclusively licensed rights to the technology to Transgenomic.