Abstract
Shallow genome-wide cell-free DNA sequencing holds great promise for noninvasive cancer monitoring by providing reliable copy number alteration (CNA) and fragmentomic profiles. Single-nucleotide variations (SNVs) are, however, much harder to identify with low sequencing depth due to sequencing errors. Here, we present Nanopore Rolling Circle Amplification (RCA)-enhanced Consensus Sequencing (NanoRCS), which leverages RCA and consensus calling based on genome-wide long-read nanopore sequencing to enable simultaneous multimodal tumor fraction (TF) estimation through SNVs, CNAs, and fragmentomics. The efficacy of NanoRCS is tested on 18 cancer patient samples and seven healthy controls, demonstrating its ability to reliably detect TFs as low as 0.24%. In vitro experiments confirm that SNV measurements are essential for detecting TFs below 3%. NanoRCS provides an opportunity for cost-effective and rapid sample processing, which aligns well with clinical needs, particularly in settings where quick and accurate cancer monitoring is essential for personalized treatment strategies.
| Original language | English |
|---|---|
| Pages (from-to) | 886-899 |
| Number of pages | 14 |
| Journal | Genome Research |
| Volume | 35 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - Apr 2025 |
Bibliographical note
Publisher Copyright:© 2025 Chen et al.
Funding
We thank Ivo Renkens of USEQ for the help and advice on ONT Nanopore sequencing, Roy Straver and Carlo Vermeulen for their scientific input on the project, and Martin Benoit and the Center for NanoScience at the LMU Munich for help with AFM imaging. We acknowledge the Utrecht Sequencing Facility (USEQ) for providing sequencing services and data. USEQ is subsidized by the University Medical Center Utrecht and The Netherlands X-omics Initiative (NWO project 184.034.019).
| Funders | Funder number |
|---|---|
| University Medical Center Utrecht and The Netherlands | 184.034.019 |
| University Medical Center Utrecht and The Netherlands X-omics Initiative (NWO project) |