Catching SARS-CoV-2 by Sequence Hybridization: a Comparative Analysis.

Area of Science:

• Virology
• Genomics
• Bioinformatics

Background:

• Continuous next-generation sequencing (NGS) and data sharing are essential for monitoring SARS-CoV-2 pandemic dynamics, including geographical spread, viral evolution, and new mutations.
• Efficient sequencing strategies are vital for obtaining high-quality, full-length viral genomes.
• Two primary enrichment methods for SARS-CoV-2 sequencing are tiling multiplex PCR and sequence hybridization by bait capture, chosen based on sample quality and research objectives.

Purpose of the Study:

• To evaluate the sensitivity and capture efficiency of five commercially available sequence capture bait panels for SARS-CoV-2 sequencing.
• To provide a decision-making basis for the scientific community regarding panel selection and optimize sequencing workflows.
• To offer potential improvements for manufacturers of sequence capture panels.

Main Methods:

• Utilized a combined approach of droplet digital PCR (ddPCR) and next-generation sequencing (NGS) to assess five distinct sequence capture panels targeting SARS-CoV-2.
• Determined the sensitivity and capture efficiency of each panel.
• Calculated the minimum number of read pairs required for high-quality, full-length genome recovery.

Main Results:

• The SARS-CoV-2-specific panel from Twist Bioscience demonstrated the highest efficiency.
• Two respiratory panels from Twist Bioscience and Illumina were also found to be efficient.
• The study provides a computational basis for optimizing flow cell utilization and minimizing sequencing resources.

Conclusions:

• The Twist Bioscience SARS-CoV-2 panel is the most effective for sensitive and efficient SARS-CoV-2 genome sequencing.
• Results guide the selection of optimal sequencing panels and inform workflow improvements for laboratories worldwide.
• Calculated read pair requirements enable maximized sequencing output while minimizing costs and time.