Early assessment of circulating tumor DNA after curative-intent resection predicts tumor recurrence in early-stage and locally advanced non-small-cell lung cancer.
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| Abstract |
Circulating tumor DNA (ctDNA) has demonstrated great potential as a noninvasive biomarker to assess minimal residual disease (MRD) and profile tumor genotypes in patients with non-small-cell lung cancer (NSCLC). However, little is known about its dynamics during and after tumor resection, or its potential for predicting clinical outcomes. Here, we applied a targeted-capture high-throughput sequencing approach to profile ctDNA at various disease milestones and assessed its predictive value in patients with early-stage and locally advanced NSCLC. We prospectively enrolled 33 consecutive patients with stage IA to IIIB NSCLC undergoing curative-intent tumor resection (median follow-up: 26.2 months). From 21 patients, we serially collected 96 plasma samples before surgery, during surgery, 1-2 weeks postsurgery, and during follow-up. Deep next-generation sequencing using unique molecular identifiers was performed to identify and quantify tumor-specific mutations in ctDNA. Twelve patients (57%) had detectable mutations in ctDNA before tumor resection. Both ctDNA detection rates and ctDNA concentrations were significantly higher in plasma obtained during surgery compared with presurgical specimens (57% versus 19% ctDNA detection rate, and 12.47 versus 6.64 ng·mL-1 , respectively). Four patients (19%) remained ctDNA-positive at 1-2 weeks after surgery, with all of them (100%) experiencing disease progression at later time points. In contrast, only 4 out of 12 ctDNA-negative patients (33%) after surgery experienced relapse during follow-up. Positive ctDNA in early postoperative plasma samples was associated with shorter progression-free survival (P = 0.013) and overall survival (P = 0.004). Our findings suggest that, in early-stage and locally advanced NSCLC, intraoperative plasma sampling results in high ctDNA detection rates and that ctDNA positivity early after resection identifies patients at risk for relapse.
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| Authors | Silvia Waldeck, Jan Mitschke, Sebastian Wiesemann, Michael Rassner, Geoffroy Andrieux, Max Deuter, Jurik Mutter, Anne-Marie Lüchtenborg, Daniel Kottmann, Laurin Titze, Christoph Zeisel, Martina Jolic, Ulrike Philipp, Silke Lassmann, Peter Bronsert, Christine Greil, Justyna Rawluk, Heiko Becker, Lisa Isbell, Alexandra Müller, Soroush Doostkam, Bernward Passlick, Melanie Börries, Justus Duyster, Julius Wehrle, Florian Scherer, Nikolas von Bubnoff |
| Journal | Molecular oncology (Mol Oncol) Vol. 16 Issue 2 Pg. 527-537 (01 2022) ISSN: 1878-0261 [Electronic] United States |
| PMID | 34653314 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
| Copyright | © 2021 The Authors. Molecular Oncology published by John Wiley & Sons Ltd on behalf of Federation of European Biochemical Societies. |
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