Active clinical trials for "Colorectal Neoplasms"

Cancer is a DNA disease characterized by the presence of genetics alterations in cancer cells. The recent studies underline that these recurring alterations must be considered as a good molecular marker. In fact, they could use for tumor DNA detection in different biological fluids. So, the main purpose is to define the presence of circulating tumor DNA in the patients plasma with colorectal cancer, by the presence of mutation (KRAS, NRAS, BRAF, APC, TP53 and MIRCOSATELLIE instability). These molecular analysis will be done both in tumor and plasma samples, This trial allows to characterize the prognostic value of circulating tumoral DNA presence in colorectal cancer.

This study is aimed to evaluate the performance of the Micromedic CD24 assay in identifying colorectal adenoma using Western blot and ELISA assays. These assays are designed to detect CD24 protein in peripheral blood leukocytes (PBL). Elevated levels of CD24 may be indicative of colorectal adenoma (inclusive of optically detectable early adenoma to late adenoma, and cancer).

Colorectal cancer is a common disease worldwide. It is now thought that colorectal cancer cells arise from stem cells where the genetic material regulating growth and division of the stem cell has become defective. This leads to unregulated production of cells which in turn have defective genetic information and cancer formation. Research into colorectal cancer is hampered by the fact that studies must take a very long time to produce results and be very large if the development of a cancer is the endpoint. Therefore alternative methods of quantifying the risk of developing a cancer are required so trials can be a realistic size and be completed in a realistic time frame. The investigators have previously identified several candidates for these 'biomarkers'. The next stage in proving or disproving these as useful biomarkers is to test their response to a dietary agent that the investigators know reduces the risk of colon cancer.

RATIONALE: Studying samples of tissue in the laboratory from patients who received cetuximab may help doctors understand and predict how well patients will respond to treatment. PURPOSE: This research study is studying biomarkers in predicting response to cetuximab in patients with advanced colorectal cancer.

This observational study will evaluate the safety and efficacy of Bevacizumab in combination with 5-Fluorouracil based chemotherapy as first-line and second-line therapy in Chinese participants with metastatic colorectal cancer. Data will be collected from each participant for up to 3 years.

This prospective observational study will evaluate the efficacy and safety of bevacizumab in combination with capecitabine and oxaliplatin as first-line treatment in participants with colorectal cancer. Data will be collected from each participant until disease progression occurs (for up to 30 months).

RATIONALE: Questionnaires that patients can use to assess skin toxicities related to treatment may help identify the intermediate-and long-term effects of cetuximab, panitumumab, or erlotinib hydrochloride. PURPOSE: This trial studies the validation of a cancer questionnaire for skin toxicities in patients with colorectal or lung cancer receiving cetuximab, panitumumab, or erlotinib hydrochloride.

Study hypothesis The overall aim of this study is to compare two bowel preparations that are used prior to a colonoscopy procedure. The principal research questions are: Does the use of a low residue diet increase patient concordance to the bowel preparation instructions? Does the use of a low residue diet decrease the adequacy of assessment of the mucosa? Does the use of a low residue diet increase the willingness of patients to undertake repeated examination as is required for disease follow-up? Does body weight affect perceived tolerability of either group?

Colorectal cancer is a major public health concern in Alberta. Colorectal Cancer is the fourth most common diagnosed cancer and second overall in terms of cancer deaths in Canada. One in 14 males and 1 in 16 females aged 50-74 will be diagnosed with colorectal cancer and will have an overall 1 in 28 chance of dying from colorectal cancer. While colorectal cancer is surgically curable if diagnosed in the early stages, with five year survival rates of 90% versus 10% if detected at more advanced stages, less than 20 % of all individuals in this age bracket traditionally have undergone colorectal cancer screening. Colorectal cancer often presents with non-specific symptoms where non-cancerous polyps are commonly found. If these polyps are left in place, they may grow over time and progress from a non-cancerous mass to symptomatic cancerous tumors; therefore, early screening in those patients without symptoms may thereby prevent the progression from a non-cancerous to cancerous finding. The hypothesis, or theory being studied in the SCOPE Pilot research study, is that implementation of a colorectal screening program would decrease colorectal cancer prevalence, increase the long-term survival ratio for patients, and decrease burden on the health care system. Moreover, early detection and treatment of colorectal cancer has the potential to increase the lifespan of patients and decrease health care costs. The SCOPE Pilot Research study will recruit 1000 individuals between the ages of 50 - 74 of average to high risk for developing colorectal cancer as determined by their referring Gastroenterologists. Those patients who are ages 40-50 will also be eligible if they have a personal or family history of colorectal cancer. Patients referred to the SCOPE Pilot program will be further screened for eligibility, and if no exclusion criterion is present, will be invited to attend an education session and research program. The SCOPE Pilot research study will compare the current fecal occult blood testing (FOBT - Hemoccult II) with newly available FOBT blood testing along with colonoscopy therapy. It will also encompass educational information, risk stratification, screening for both average and high risk patients, and colonoscopy.

The purpose of this study is to determine whether a multimedia educational computer program can increase colorectal cancer screening rates in low and adequate literacy patients.