View clinical trials related to Colorectal Neoplasms.
Filter by:Two major genetic pathways leading to colorectal carcinoma can well be distinguished; the 'suppressor pathway', which is characterized by inactivation of tumor-suppressor genes and the 'mutator pathway', which is characterized by microsatellite instability. The purpose of this study is to explore a third putative pathway; microsatellite and chromosome stable colorectal cancer where an alternative cancer-causative mechanism might play a role.
A randomized controlled study is conducted on patients with histological stage III colorectal cancer assigned to postoperative adjuvant therapy of uracil-tegafur plus leucovorin (UFT+LV), UFT+LV / UFT, or UFT+LV+PSK / UFT+PSK. The usefulness of the three regimens was evaluated by comparing the disease-free survival rate, overall survival rate, incidence and severity of adverse event, and quality of life.
To assess the usefulness of irinotecan plus S-1 therapy based on the antitumor effect and survival period. by performing a phase II study of this combination in patients with inoperable or with postoperative colorectal cancer.
The purpose of this study is to determine whether our drug, 124I-huA33, can safely detect colorectal cancer.
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.
This study is for people with advanced colorectal cancer. This study uses the drugs Celebrex and EPO906. EPO906 is an experimental drug that has not been approved by the FDA. EPO906 is a drug that has been shown in the laboratory to cause cancer cells to die and prevents them from growing and reproducing. Celebrex is a drug that is approved by the FDA for the treatment of arthritis and prevention of colon polyps. Colon polyps are small growths in the colon. If not surgically removed, some colon polyps can become cancerous. Some studies have shown that Celebrex may reduce the side effects of chemotherapy. Other studies have shown that it may increase the effectiveness of some chemotherapy. Celebrex is not approved by the FDA for reducing the side effects of chemotherapy or improving the effectiveness of chemotherapy. The combination of EPO906 and Celebrex in this study is experimental. The main goal of this study is to see if adding the drug Celebrex to the drug EPO906 will decrease the amount of diarrhea seen in patients that receive EPO906. The goal of the first phase of this study is to find the highest dose of EPO906 that can be given safely with Celebrex. The dose of Celebrex will remain the same for the whole study. Higher doses of EPO906 will be given to each group of patients. The increase of EPO906 will stop once more than one patient has serious side effects. The highest dose of EPO906 that can be given with Celebrex (without serious side effects) will be called the pilot dose. The goal of the second phase of this study is to find out how tumors respond to these doses of the drugs. Another purpose of this study is to see how the body processes the EPO906 and Celebrex. This study will also look at the side effects of these drugs. In this study, we will measure how long subjects live, how often tumors shrink after receiving the study drugs, and how long it takes for tumors to increase in size after receiving the study drugs. This study will also measure the levels of genes, which are the cell's blueprint, in participant's tumors. Several genes can affect how people's bodies react to the cancer drugs. Genes will also be measured in participant's blood. We want to see if these predict response to the study drugs.
Primary endpoint of the study is to prove the superiority of an adjuvant therapy with oxaliplatin/ capecitabine until the first occurrence of appearance of a tumour. Occurrences in the meaning of this study are the appearance of a relapse of the tumour, of metastases, of a second tumour or death of any reason.
This study enrolled patients with measurable metastatic colorectal cancer. Blood was drawn prior to the patient receiving a new therapy for his/her cancer and subsequently at 7-14 days, 3-4 weeks, and when an imaging study was done (~every 6 to 12 weeks). The blood was tested to find circulating tumor cells (CTCs) and to count them. The CTC levels were compared to the imaging study results to see if the CTC number and the imaging result (progression/no progression) were in agreement. Maximum active study participation was 12 months with up to 8 blood draws being taken. All patients are currently being followed for up to 24 months from their off study date for survival. The CTC result will also be used to see if there is a difference in survival and progression-free survival for those patients with and without a certain number of CTCs.
The purpose of this study is to see if screening with flexible sigmoidoscopy (a flexible viewing tube) may reduce large bowel cancer and cancer deaths. The researchers also want to see if the addition of screening for occult blood in stools may contribute further to this aim. Additionally, the researchers also want to see to which extent (and in which direction) the study may influence overall endoscopic activity in the general population in the screening area and in areas where controlled screening is not established.