Bioinformatics Series: Benchmarking of Variant Callers & Analysis Tools

September 27, 2017 @ 2:00 pm – 3:00 pm

Next generation sequencing (NGS) has allowed for the quick turn around time of whole genome and transcriptome sequencing of cancer patients, which enables a detailed look at somatic changes in tumours. However, there are many confounding factors in the identification in mutations, structural changes and gene expression changes, such as systematic bias, sequencing error and varying tumour content from the tumour sample. Although there are a large number of tools available for analyzing somatic variation, choosing the right tool can be very difficult.

Here we present several examples of the testing and benchmarking of tools that have been done at the Genome Sciences Centre, and the process that we used to select a tool for our analysis pipelines.

We will also present a somatic variant data set which we constructed based on the sequencing of a metastatic melanoma cell line, COLO-829 and its matched normal. With these results, we were able to generate a somatic reference standard for cancer genome sequencing and benchmark a number of somatic variant callers.

This seminar is for anyone interested in learning more about ways to test and benchmark tools for analysis of whole genome and transcriptome sequencing data. No prior knowledge or experience is necessary. This will be an information-sharing session.