20Oct 2022
Comparing single‐target and multitarget approaches for postoperative circulating tumour DNA detection in stage II–III colorectal cancer patients

Comparing single‐target and multitarget approaches for postoperative circulating tumour DNA detection in stage II–III colorectal cancer patients

Circulating tumour DNA (ctDNA) detection for postoperative risk stratification in cancer patients has great clinical potential. However, low ctDNA abundances complicate detection. The empirical evidence supporting performance gains of MT vs single-target (ST) strategies in a postoperative setting is limited. We compared ctDNA detection by ST digital PCR and MT sequencing of 16 patient-specific variants. Both approaches exhibited good concordance with highly correlated ctDNA quantifications. A difference was observed in ctDNA detection preoperatively. However, no difference was observed immediately after surgery in recurrence (ST 11/22, MT 10/22) or nonrecurrence (2/34) patients. Therefore, our findings do not support significant performance gains of the MT strategy over the ST strategy for postoperative ctDNA detection.

  • #oncology

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