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Development of Precision Neoadjuvant-Adjuvant Therapies

ABSTRACT: Development of Precision Neoadjuvant-Adjuvant Therapies

PROVIDER: PRJNA392769 | ENA |

REPOSITORIES: ENA

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Project description:Rectal cancer represents the most complex area of multidisciplinary treatment in bowel surgery. In 2017, there were 1221 new rectal cancers in Finland. The prognosis of colorectal cancer (CRC) patients these days is almost exclusively driven by the occurrence of the metastatic form of the disease. The treatment of rectal cancer often includes a long delay between diagnosis and the initiation of systemic chemotherapy, increasing risk for systemic metastases for those at high risk. On the other hand, the waiting time during pretreatment before surgery enables comprehensive systematic characterization of the primary tumor status before the decisions on adjuvant chemotherapy, opening a window to the use of precision in decision-making. In this randomized controlled treatment trial, outcomes of novel precision methods to select right rectal cancer patients for treatment that they need will be compared to conventional treatment. The study aims to reduce over-treatment of those that most likely do not benefit from additional treatments. With the overall aim to reduce metastatic form of the disease, patients with high-risk features will be randomized to a treatment strategy with early systemic control by chemotherapy followed by circulating tumor DNA (ctDNA) and organoid-guided adjuvant therapy, or to conventional treatment strategy. Both state-of-the-art laboratory practice and routine diagnostic clinical pipelines are introduced to bring future diagnostic models of minimal residual disease and chemoresistance closer to current practice. The outcomes will reveal the clinical benefit of such strategy by recurrence-free survival at highest level of evidence, and produce important clinical outcome data on the application of ctDNA in everyday cancer treatment practice. The translational data on the use of ctDNA organoids to inform treatment decision and regimen selection will build knowledge of the use of such biomarkers as tools for clinical practice and clinical research. The results will be scalable worldwide in the practice of rectal cancer treatment.

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Development of Precision Neoadjuvant-Adjuvant Therapies

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