Active clinical trials for "Colorectal Neoplasms"

Metformin is drug that is normally used to treat people with diabetes. New research has discovered that metformin may also kill cancer stem cells. These cancer stem cells make up only a small portion of a cancer, but may be responsible for resistance to chemotherapy or for causing recurrence of the cancer. The purpose of this study is to determine the effect of metformin on colorectal cancer tumors. The study is designed to develop the methods to test tumors for cancer stem cells and then to determine the difference between treating with metformin and not treating with metformin with regard to the cancer stem cells. This research is investigational because the effect of metformin on cancer stem cells is not known in humans. Also, in patients who are not diabetic, metformin would normally not be given prior to surgery.

Substantial progress has been made in the treatment of cancer through the use of targeted therapies, but what works for one patient might not work for another patient. Certain drugs are now being developed that target specific molecules in the body that are believed to be part of the disease. Biomarkers are specific characteristics of the cancer that may help provide prognostic information (i.e. how well patients will be regardless of the treatments given) or help predict sensitivity or resistance to a specific treatment. The study will collect archival tumor samples (previously collected biopsy or surgical tumor samples) to provide biomarker data about a patient's cancer, in order to help their physicians to identify which clinical trials of molecularly targeted therapies may be most appropriate for the patient in the future.

This study is being performed to test if the use of high dose of cetuximab in combination with irinotecan overcomes the resistance seen with standard dose of cetuximab plus irinotecan in patients with wild type KRS tumors that have advanced colon or rectal cancer

Prove the hypothesis that dietary supplementation with bioflavonoids will diminish the recurrence rate of colonic neoplasia, we will implement a clinical trial comparing bioflavonoids and placebo in a double blind randomized clinical trial. To use a standardised supplementation of bioflavonoids, a commercially available preparation (Flavo-Natin®) will be used.

This study will compare the safety and efficacy of sunitinib in combination with FOLFOX versus bevacizumab in combination with FOLFOX for the treatment of patients with metastatic colorectal cancer who have not been treated before.

This study will determine if nimotuzumab provides a benefit in this type of cancer when given in combination with irinotecan. The study will test: How long any good effects last. How bad any side effects are. Objectives: Primary: The primary goal is to assess the Objective Response Rate (ORR) that the combination of irinotecan and nimotuzumab will produce in patients with irinotecan-refractory metastatic colorectal cancer Secondary: To assess the incidence of Grade 2 or greater acneiform rash or infusion reaction, allergic reaction or anaphylactoid reaction AEs in patients with irinotecan-refractory metastatic colorectal cancer following weekly or 2-weekly nimotuzumab schedules; To assess Progression-Free Survival (PFS), defined as time from date of randomization until date of disease progression (clinical or radiological) or death due to any cause, for the two nimotuzumab schedules; To assess the rates and durations of Stable Disease (SD) following weekly or 2-weekly nimotuzumab schedules; To assess the Time to Disease Progression (TTP) following weekly or 2-weekly nimotuzumab schedules; To evaluate ORR in patients who are identified as having "primary" irinotecan resistance following weekly or 2-weekly nimotuzumab schedules; To evaluate Overall Survival (OS) following weekly or 2-weekly nimotuzumab schedules; To compare the two dosing schedules of nimotuzumab with respect to objective response rates and safety; To evaluate the overall safety and toxicity profiles of these two dose regimens of nimotuzumab; To evaluate trough levels and accumulation of nimotuzumab in serum of patients receiving the drug on weekly or 2-weekly regimens.

RATIONALE: Drugs used in chemotherapy, such as capecitabine, irinotecan, 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. Monoclonal antibodies, such as bevacizumab, can block tumor growth in different ways. Some find tumor cells and kill them or carry tumor-killing substances to them. Others interfere with the ability of tumor cells to grow and spread. Bevacizumab may also block blood flow to the tumor. Giving combination chemotherapy together with bevacizumab may kill more tumor cells. PURPOSE: This phase I/II trial is studying the side effects and best dose of capecitabine when given together with irinotecan and oxaliplatin with or without bevacizumab and to see how well they work in treating patients with metastatic or locally advanced colorectal cancer or other solid tumors that cannot be removed by surgery.

To determine the molecular interaction in tumor samples between docetaxel and lonafarnib.

This study is for people with colorectal cancer, who have tumors that cannot be completely removed by surgery. Blood clots are a problem in patients with cancer. Blood clots are also a problem in patients receiving cancer drugs. Studies have shown that up to 17% of patients receiving cancer drugs experienced blood-clotting problems. One purpose of this study is to find if the drug combination of irinotecan, 5-fluorouracil (5-FU), bevacizumab and leucovorin (LV) affect blood-clotting factors. A second purpose of this study is to find out what effects the drug dalteparin has on clotting factors in the blood in patients receiving the drug combination of irinotecan, 5-FU, bevacizumab and LV. It is hoped that adding dalteparin to chemotherapy may benefit patients with colorectal cancer by preventing blood clots

To determine efficacy in the delivery of chronomodulated chemotherapy.