TABLE 5.
Practical considerations for mNGS and tNGS workflows
| Step | Consideration(s) for workflow |
|
|---|---|---|
| Metagenomic NGS | RPIP/Explify targeted NGS | |
| Processing and library preparation | Less extensive library prepn; lower cost for library prepn kits without targeted reagents | More extensive library prepn; additional time and higher reagent cost |
| Sequencing | Greater depth (goal of 10 million reads/sample); higher sequencing cost per sample | Shallower depth (goal of 3 million reads/sample); lower sequencing cost per sample |
| Bioinformatic analysis | Open-source bioinformatics; more involved and requires bioinformatic experience and database curation/maintenance; additional resource and time cost; ability to detect more organisms for other research questions | Less involved; does not require bioinformatic experience or database management |
| Result interpretation | Markedly more results requiring interpretation; possible missed pathogens with abundant resident microbiota | Easier interpretation, with potential pathogens listed on Explify report (but interpretation still required) |
| Detectable analytes | Broadest possible within processing and database limitations | Narrower; partially limited by bioinformatic analysis process |
| AMR prediction | Not studied but theoretically possiblea | Achievable but requires optimization |
See reference 33.