A Single-center, Open-label, Randomized Phase II Study to Evaluate the Use of Capecitabine in Monotherapy and in Combination With Oxaliplatin in Elderly Patients as Adjuvant Chemotherapy for Locally Advanced Colorectal Cancer.
All patients with locally advanced colorectal cancer after radical surgical intervention who have not previously received systemic antitumor treatment will be randomized into two groups receiving fluoropyrimidines in mono-regimen and in combination with oxaliplatin. Main objectives: * to compare the 3-year disease-free survival and 5-year overall survival rates in the two groups. * to identify, through a comprehensive geriatric assessment among elderly patients, the groups that benefit most from adjuvant chemotherapy. Patients will be treated until progression of the process is detected or the maximum effect of therapy is reached (the longest duration of treatment is 6 months).
• Age 70 years and older;
• Obtaining informed consent to participate in the study;
• Morphologically confirmed diagnosis of colorectal cancer;
• Stage III colorectal cancer;
• Underwent radical surgical intervention for primary colorectal tumor;
• ECOG score of 0 - I;
• Life expectancy of more than 6 months;
• No history of systemic drug therapy for CRC;
• Adequate liver, kidney and bone marrow function;
⁃ Absence of severe uncontrolled concomitant chronic diseases and acute illnesses.