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Review
. 2024 Mar;55(1):41-46.
doi: 10.1007/s12029-023-00959-8. Epub 2023 Jul 12.

Role of Circulating Tumor DNA Among Patients with Colorectal Peritoneal Metastases

Joel M Baumgartner  1 , Gregory P Botta  2
Affiliations
Review

Role of Circulating Tumor DNA Among Patients with Colorectal Peritoneal Metastases

Joel M Baumgartner et al. J Gastrointest Cancer. 2024 Mar.

Abstract

Purpose: This was a review of circulating tumor DNA (ctDNA) in patients with peritoneal metastases from colorectal cancer.

Methods: We searched the PubMed database for studies reporting detection of ctDNA in patients with colorectal cancer (CRC) and with peritoneal metastases (PM) from colorectal cancer (CRPM). We extracted data on the population included, number of subjects, study design, type of ctDNA assay used and schedule, and the major findings from these publications.

Results: We identified 13 studies for review investigating ctDNA, using a variety of ctDNA assays, among 1787 patients with CRC without PM, as well as four eligible published and one unpublished (in press) studies, which included 255 patients with PM from any primary site and 61 patients with CRPM. Among the 13 studies investigating ctDNA among CRC without PM, posttreatment surveillance ctDNA was associated with recurrence and was generally more sensitive than imaging or tumor markers. Among the five studies including patients with PM, ctDNA was not universally able to detect the presence of PM, but when present, ctDNA predicted worse outcomes.

Conclusion: Circulating-tumor DNA is a potentially useful surveillance tool for patients with CRC. However, the sensitivity of ctDNA to detect CRPM is variable and warrants further inquiry.

Keywords: Colorectal cancer; Peritoneal metastases; ctDNA.

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Conflict of interest statement

Author G. B. is a consultant and advisory board member for Natera and TumorGen. The other author declares no competing interests.

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