Low Pass Genome Sequencing (LP-GS) for detection of CNVs as a replacement to constitutional microarray analysis. The team evaluated a number of different tools and found NxClinical to have superiority in CNV detection and classification.
NxClinical 5.0 is a unique software solution for integrated analysis of copy number, sequence variants, and allelic changes obtained from multiple technologies. NxClinical 5.0 addresses the changing dynamics in the clinical genomics field where multiple technologies and modalities are merging together enabling increased clinical knowledge and greater efficiency.
NxClinical has very strong visualization tools which is important for cytogeneticists - a reviewer can easily view the allele patterns and estimate % aberrant cells. But NxClinical 5.0 makes this even easier by automatically performing this calculation on a per event basis. The software also uses a user-defined threshold to mark events as mosaic or not. The software looks at event-specific aberrant cell fraction using both the Log R value as well as BAF (where available). This approach uses platform-dependent scaling so that the correct calculation can be applied to samples from multiple platforms (e.g. ThermoFisher, Illumina, CNV from NGS).
The BAM MSR algorithm uses a set of “normal” samples to create a pooled reference to be used against the samples under analysis. Here are a few recent publications showing the algorithm’s versatility in handling different types of NGS data from panels to low-pass whole genome.
The 2019 Tumor Profiling: Methods and Protocols book is out and we are particularly excited about the Whole-Genome Single Nucleotide Polymorphism Microarray for Copy Number and Loss of Heterozygosity Analysis chapter! Read more.
NxClinical provides a novel, integrated approach to clinical genome analysis and interpretation.
At the latest SoCal region Cytogenetics and Molecular Genetics meeting, there was much discussion over the future direction of genomic variant detection and classification in oncology.