View clinical trials related to Colorectal Cancer.
Filter by:Colorectal cancer (CRC) is the second common cause of death in the Western world, and is very increasing in Japan. Fecal occult blood test (FOBT) is used routinely for CRC screening, which has been shown to reduce the incidence, morbidity, and mortality of CRC. However, there is a need to develop a novel method to improve sensitivity. The investigators reported that Fecal COX-2 assay, one of fecal RNA test, is potentially useful for colorectal cancer screening (Gastroenterology 127; 422-427, 2004). So the investigators planed to compare fecal RNA test with FOBT for detecting colorectal cancer and adenoma.
The purpose of the study is to describe the tumor response rates for the two regimens being studied, and to determine how long patients live after receiving the treatment, how long patients are without return of their disease after they receive treatment, and how long the response they get from the treatment lasts. The amount and type of side effects/toxicities of each regimen will also be evaluated. The regimen including Oxaliplatin + 5FU/Folinic Acid is a current standard of care.
To compare maintenance chemotherapy with Xeloda to control after best response with first line chemotherapy in advanced colorectal cancer. Main endpoint is progression free survival. A total of 300 patients will be included.
This study is for people with solid tumors cancer for which the standard chemotherapy drugs have not worked. The purpose of this research is to evaluate the side effects of Xeloda (also called capecitabine) in combination with a new anticancer agent called Gleevec (also called imatinib mesylate). Xeloda is an anticancer drug, and can be taken by mouth. The active ingredient is a well-studied cancer drug called 5-FU. Xeloda is approved by the FDA for the treatment of colon cancer. Gleevec is approved in the US for the treatment of patients with a leukemia called CML (increase of white blood cells) after failure of standard therapy. It is also approved by the FDA for patients with Gastrointestinal Stromal Tumors (a rare tumor in the digestive tract). This study will test how much Gleevec we can safely give with Xeloda. Xeloda will be given at the recommended dose for colorectal cancer and Gleevec will be given in increasing amounts.
RATIONALE: Drugs used in chemotherapy 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. Monoclonal antibodies, such as cetuximab, can block tumor growth in different ways. Some block the ability of tumor cells to grow and spread. Others find tumor cells and help kill them or carry tumor-killing substances to them. It is not yet known whether combination chemotherapy and cetuximab are more effective than combination chemotherapy alone in treating colorectal cancer. PURPOSE: This randomized phase III trial is studying combination chemotherapy and cetuximab to see how well they work compared to combination chemotherapy alone as first-line therapy in treating patients with metastatic colorectal cancer.
The present project will follow our previous phaseⅡ study of FOLFOX regimens for the treatment of stage Ⅳ colorectal cancer. We will recruit at least 200 patients for this study. The selection of patients will be based on rigorous eligibility criteria. The patients will be allocated based on the expression of each molecular marker (MSI, TS, DPD, MVD and EGFR) and the implementation of chemotherapy. For example, in the examination for the clinical implications of EGFR, the patients will be classified into four groups: EGFR（＋） chemotherapy（＋）; EGFR（＋） chemotherapy（－）; EGFR（－） chemotherapy（＋）; EGFR（－） chemotherapy（－）. Base on the analysis of this 2×2 table, we will clarify the prognostic significance of a specific molecular marker is due to whether the specific molecular marker predicts biological invasiveness and/or chemosensitivity. We believe the present study will have the following significance: （1）To further clarify the mechanisms for the carcinogenesis and progression of CRC; （2）To facilitate the development of novel chemotherapeutic agents; and （3） To gain the experience for the practice of evidence-based medicine.
BACKGROUND: Primary screening with sigmoidoscopy would miss a substantial proportion of advanced proximal neoplasia (APN), but screening with universal colonoscopy is costly. The aim of this study is to assess the efficacy of mixed strategy which uses sigmoidoscopy for younger patients and colonoscopy for older patients. MATERIALS and METHODS: We analyzed an established database containing consecutive average-risk adults aged 50 or older who underwent screening colonoscopy as part of health check-up. We assessed the efficacy of mixed screening strategy using colonoscopy for persons aged at and above a certain cut-off age and sigmoidoscopy for persons aged below that age. Those who underwent sigmoidoscopy initially would be referred for subsequent colonoscopy if distal sentinel lesion was detected.
We will explore the genetic (including APC, k-ras, p53, MSI, etc.) and environmental (including family history, life style, diet, nutritional status, DM, serum IGF-I, IGFBP-3, etc.) risk factors of colorectal tumorigenesis. We will accrue approximately 1000 patients as experimental group. The control group consists of 2000 individuals who were confirmed without colorectal cancer or polyps by colonoscopy. We estimated the statistical power of this study will reach more than 90%. In the second year, we will explore the association between various environmental risk factors with the epigenetic changes of various oncogenes and tumor suppressor genes. Firstly, we will study the correlation between hypermethylation of promoter region of hMLH1 gene with various environmental factors. Next, we will explore the genetic polymorphisms of promoter of E-cadherin gene. Recently, it has been reported that the C→A genetic polymorphism in the promoter region of E-cadherin gene in prostate cancer. Since this phenomenon has not been reported in colorectal cancer, it is mandatory for us to extend our research to the E-cadherin polymorphisms of colorectal cancer. Moreover, this project will focus on exploration of the association between the genetic polymorphisms of promoter of TS gene with chemosensitivity to 5-Fu-based therapy. We speculated that the better prognosis in colorectal tumors with MSI is related to their expression of TS gene. In summary, the second year of this project will extend our accumulated experience in the study of genetic polymorphisms to further clarify the association between genetic polymorphisms of TS gene with the prognosis of colorectal cancers after chemotherapy. We believe that this project will facilitate: (1) the further clarification of colorectal cancer tumorigenesis; (2) the establishment of domestic epidemiological data of colorectal cancer of Taiwan, and (3) the improvement of the quality of clinical management of patients with colorectal cancer.
More and more colorectal surgeons believe that surgical resections of hepatic metastases from colorectal cancer is the only chance for cure of patients. The five-year survival for patients with hepatic metastasis from colorectal cancer after surgical resection is approximately 30 %. However, most hepatic metastases from colorectal cancer were inoperable. With the progress of chemotherapy, for example, the combination of the 5-Fu, leucovorin, and oxaliplatin, some surgeons advocated that approximately 20% of inoperable liver metastases will be converted to operable case, thus providing the long-term survival for patients. In this study, we made a phase Ⅱ clinical trial regarding the use of the Folfox-4 regimens in the neo-adjuvant treatment of inoperable hepatic metastases. Our aims is to evaluate the tumor response rate for this regimen, the rate of resectability of liver metastases, progression free survival and overall survival of patients. In addition, the difference between the reports from Western and Oriental countries will be analyzed. We believe this study will provide new perspectives regarding the most beneficial treatment modalities for the patients with hepatic metastases from colorectal cancer.
The overall purpose of this study is to determine the efficacy, safety and tolerability of indisulam in combination with irinotecan as a treatment for patients with metastatic colorectalcancer previously treated with 5-fluorouracil/leucovorin and oxaliplatin (FOLFOX).