articleScience Translational MedicineJul 6, 2016BRONZE OA

Circulating tumor DNA analysis detects minimal residual disease and predicts recurrence in patients with stage II colon cancer

The University of Melbourne · Walter and Eliza Hall Institute of Medical Research · +13 more institutions

PubMed
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Abstract

Detection of circulating tumor DNA (ctDNA) after resection of stage II colon cancer may identify patients at the highest risk of recurrence and help inform adjuvant treatment decisions. We used massively parallel sequencing-based assays to evaluate the ability of ctDNA to detect minimal residual disease in 1046 plasma samples from a prospective cohort of 230 patients with resected stage II colon cancer. In patients not treated with adjuvant chemotherapy, ctDNA was detected postoperatively in 14 of 178 (7.9%) patients, 11 (79%) of whom had recurred at a median follow-up of 27 months; recurrence occurred in only 16 (9.8 %) of 164 patients with negative ctDNA [hazard ratio (HR), 18; 95% confidence interval (CI),…

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