View clinical trials related to Rectal Neoplasms.
Filter by:Oxaliplatin and 5FU based preoperative chemoradiation in rectal cancer.
The purpose of this phase II trial is to determine the efficacy and safety of the combination of oxaliplatin, capecitabine and radiotherapy as preoperative therapy in locally advanced cancers of the rectum.
While new treatments for metastatic and recurrent colorectal cancer have become available over the past several years, this disease remains incurable with a limited life expectancy from the time of diagnosis. New strategies for treatment of disseminated colorectal cancer are needed. Under this proposal, patients with advanced colorectal cancer will receive Granulocyte-Macrophage Colony-Stimulating Factor (GM-CSF) to stimulate endogenous dendritic cells and enhance anti-tumor immune mechanisms. This will be combined with standard chemotherapy and patients will be followed for response and overall survival. Detailed correlative laboratory analysis will also be performed to define the extent of dendritic cell and cellular immune system stimulation.
There is no established standard preoperative treatment in rectal cancer. Two large randomized studies in North America closed from lack of accrual; therefore the only method of assessing preoperative treatment in rectal cancer is from Phase II studies. This study builds on the experience at PMH gained in two previous studies which demonstrated a lower than expected toxicity with concurrent 5FU infusion and external radiotherapy. The current standard at PMH is preoperative radiation, 46Gy in 23 fractions with concurrent 5FU infusion 225mg/m2. An increase of radiation dose and consequent increase in chemotherapy may improve the response rate, but may also increase toxicity. It is proposed to increase the dose of radiotherapy to 50Gy in 25 fractions with concurrent chemotherapy and measure acute toxicity and complete remission rate.
RATIONALE: Radiation therapy uses high-energy x-rays to kill tumor cells. Drugs used in chemotherapy, such as capecitabine and oxaliplatin, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving more than one drug (combination chemotherapy) may kill more tumor cells. Giving radiation therapy together with combination chemotherapy before surgery may shrink the tumor so it can be removed. It is not yet known whether giving radiation therapy together with capecitabine is more effective with or without oxaliplatin before surgery in treating rectal cancer. PURPOSE: This randomized phase III trial is studying radiation therapy, capecitabine, and oxaliplatin to see how well they work compared to radiation therapy and capecitabine in treating patients who are undergoing surgery for stage II or stage III rectal cancer.
To assess the efficacy and safety of pre-operative capecitabine and oxaliplatin followed by capecitabine with concurrent radiotherapy followed by post-operative capecitabine in the treatment of patients with locally advanced or inoperable rectal cancer.
This is an open-label, single center, phase I study designed to determine the MTD or oral topotecan as a radiosensitizing agent in the treatment of rectal cancer patients. Sequential cohorts of three patients will be given increasing doses of oral topotecan and fixed doses of concurrent radiation (45GY) over five weeks.
The purpose of this study is to evaluate the of international standard operation, mesorectal excision (ME alone) compared to Japanese standard operation, ME with lateral lymph node dissection for clinical stage II, III lower rectal cancer
Primary objective: - Pathological complete response (ypT0N0) rate Secondary objectives: - Histopathological R0 resection rate - Pathological downstaging (ypT0-T2N0) rate - One month surgical complication rate - Predictive value of pre-operative MRI for surgical, pathological and clinical outcomes - Safety - Local and distant recurrence rates - Progression-free survival - Overall survival
This is a multi-centre randomised trial comparing long course (LC) preoperative chemoradiation with short course (SC) preoperative radiotherapy for patients with localised T3 rectal cancer.