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Circulating tumour DNA and risk of recurrence in patients with asymptomatic versus symptomatic colorectal cancer

  • Nadia Øgaard
  • , Sarah Østrup Jensen
  • , Mai-Britt Worm Ørntoft
  • , Christina Demuth
  • , Mads Heilskov Rasmussen
  • , Tenna Vesterman Henriksen
  • , Jesper Nors
  • , Amanda Frydendahl
  • , Iben Lyskjær
  • , Marijana Nesic
  • , Christina Therkildsen
  • , Jakob Kleif
  • , Mikail Gögenur
  • , Lars Nannestad Jørgensen
  • , Jesper Vilandt
  • , Jakob Benedict Seidelin
  • , Kåre Anderson Gotschalck
  • , Claudia Jaensch
  • , Berit Andersen
  • , Uffe Schou Løve
  • Ole Thorlacius-Ussing, Per Vadgaard Andersen, Thomas Kolbro, Alessio Monti, Jeppe Kildsig, Peter Bondeven, Nis Hallundbæk Schlesinger, Lene Hjerrild Iversen, Morten Rasmussen, Ismail Gögenur, Jesper Bertram Bramsen, Claus Lindbjerg Andersen*
*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

Abstract

BACKGROUND: Multiple initiatives aim to develop circulating tumour DNA (ctDNA) tests for early cancer detection in asymptomatic individuals. The few studies describing ctDNA-testing in both asymptomatic and symptomatic patients report lower ctDNA detection in the asymptomatic patients. Here, we explore if asymptomatic patients differ from symptomatic patients e.g. by including a 'low-ctDNA-shedding' and 'less-aggressive' subgroup.

METHODS: ctDNA assessment was performed in two independent cohorts of consecutively recruited patients with asymptomatic colorectal cancer (CRC) (Cohort#1: n = 215, Cohort#2: n = 368) and symptomatic CRC (Cohort#1: n = 117, Cohort#2: n = 722).

RESULTS: After adjusting for tumour stage and size, the odds of ctDNA detection was significantly lower in asymptomatic patients compared to symptomatic patients (Cohort#1: OR: 0.4, 95%CI: 0.2-0.8, Cohort#2: OR: 0.7, 95%CI: 0.5-0.9). Further, the recurrence risk was lower in asymptomatic patients (Cohort#1: sHR: 0.6, 95%CI: 0.3-1.2, Cohort#2: sHR: 0.6, 95%CI: 0.4-1.0). Notably, ctDNA-negative asymptomatic patients had the lowest recurrence risk compared to the symptomatic patients (Cohort#1: sHR: 0.2, 95%CI: 0.1-0.6, Cohort#2: sHR: 0.3, 95%CI: 0.2-0.6).

CONCLUSIONS: Our study suggests that asymptomatic patients are enriched for a 'low-ctDNA-shedding-low-recurrence-risk' subgroup. Such insights are needed to guide ctDNA-based early-detection initiatives and should prompt discussions about de-escalation of therapy and follow-up for ctDNA-negative asymptomatic CRC patients.

Original languageEnglish
Pages (from-to)1707-1715
Number of pages9
JournalBritish Journal of Cancer
Volume131
Issue number10
Early online date10 Oct 2024
DOIs
Publication statusPublished - Nov 2024

Keywords

  • Aged
  • Asymptomatic Diseases
  • Biomarkers, Tumor/blood
  • Circulating Tumor DNA/blood
  • Cohort Studies
  • Colorectal Neoplasms/genetics
  • Early Detection of Cancer/methods
  • Female
  • Humans
  • Male
  • Middle Aged
  • Neoplasm Recurrence, Local/genetics
  • Prognostic-significance
  • Validation

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