Beyond Binary MRD: Quantitative ctDNA Interpretation After Curative-Intent Surgery for Colorectal Cancer
This study demonstrates that post-operative minimal residual disease (MRD) detection in colorectal cancer is highly sensitive to analytical thresholds, revealing that a substantial proportion of residual disease signals reside below the conventional 100 ppm limit and that ultrasensitive ctDNA monitoring effectively identifies patients at risk of recurrence.