Results from GALAXY, part of the CIRCULATE study from Japan, analyzing circulating tumour DNA (ctDNA) was recently published in Nature Medicine. Investigators from GALAXY demonstrated that "postsurgical ctDNA status is a most significant prognostic biomarker than the currently used high-risk clinicopathological features in resectable colorectal cancer and can potentially be predictive of adjuvant chemotherapy benefit." The study authors thus believe that incorporating postsurgical ctDNA into TNM staging criteria can be further developed as a result of findings from GALAXY.
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Source mentioned: Kotani D, Oki E, Nakamura Y, Yukami H, Mishima S, Bando H, Shirasu H, Yamazaki K, Watanabe J, Kotaka M, Hirata K, Akazawa N, Kataoka K, Sharma S, Aushev VN, Aleshin A, Misumi T, Taniguchi H, Takemasa I, Kato T, Mori M, Yoshino T. Molecular residual disease and efficacy of adjuvant chemotherapy in patients with colorectal cancer. Nat Med. 2023 Jan;29(1):127-134. doi: 10.1038/s41591-022-02115-4. Epub 2023 Jan 16. PMID: 36646802; PMCID: PMC9873552.