TY - JOUR A1 - Sapoval, Nicolae A1 - Mahmoud, Medhat A1 - Jochum, Michael A1 - Liu, Yunxi A1 - Elworth, R.A. Leo A1 - Wang, Qi A1 - Albin, Dreycey A1 - Ogilvie, Huw A1 - Lee, Michael D. A1 - Villapol, Sonia A1 - Hernandez, Kyle A1 - Maljkovic Berry, Irina A1 - Foox, Jonathan A1 - Beheshti, Afshin A1 - Ternus, Krista A1 - Aagaard, Kjersti A1 - Posada, David A1 - Mason, Christopher A1 - Sedlazeck, Fritz J A1 - Treangen, Todd J T1 - Hidden genomic diversity of SARS-CoV-2: implications for qRT-PCR diagnostics and transmission Y1 - 2021/02/18 JF - Genome Research JO - Genome Research DO - 10.1101/gr.268961.120 SP - gr.268961.120 UR - http://genome.cshlp.org/content/early/2021/02/18/gr.268961.120.abstract N2 - The COVID-19 pandemic has sparked an urgent need to uncover the underlying biology of this devastating disease. Though RNA viruses mutate more rapidly than DNA viruses, there are a relatively small number of single nucleotide polymorphisms (SNPs) that differentiate the main SARS-CoV-2 lineages that have spread throughout the world. In this study, we investigated 129 RNA-seq datasets and 6,928 consensus genomes to contrast the intrahost and interhost diversity of SARS-CoV-2. Our analyses yielded three major observations. First, the mutational profile of SARS-CoV-2 highlights iSNV and SNP similarity, albeit with differences in C>U changes. Second, iSNV and SNP patterns in SARS-CoV-2 are more similar to MERS-CoV than SARS-CoV-1. Third, a significant fraction of insertions and deletions contribute to the genetic diversity of SARS-CoV-2. Altogether, our findings provide insight into SARS-CoV-2 genomic diversity, inform the design of detection tests, and highlight the potential of iSNVs for tracking the transmission of SARS-CoV-2. ER -