However, the difference in recurrence-free survival did not reach statistical significance (HR 4.32, p = 0.062). ctDNA positivity post EC surgery predicts relapse As seen in other cancers [ 27 , 28 , 41 ], detection of ctDNA following surgery indicates MRD and therefore has strong biological rationale as a prognostic biomarker.
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Perioperative ctDNA as a prognostic biomarker in endometrial cancer - the CODEC study.
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Similarly, while preoperative ctDNA showed a trend toward increased relapse risk, consistent with prior EC studies [ 47 ], this did not reach statistical significance.