View clinical trials related to Colorectal Neoplasms.
Filter by:To determine the objective overall response of re-treatment with cetuximab-based chemotherapy in patients upon disease progression while under observation, who had previously responded to first-line or second-line treatment with cetuximab-based chemotherapy for metastatic colorectal cancer (mCRC), but had stopped treatment for reasons other than disease progression.
Hypercatabolism and immune suppression are frequently seen in patients with malignancy. Preoperative nutritional state is an important factor in determining surgical and postoperative complications because the preoperative nutritional status affects the postoperative nutritional state, immunity and inflammatory response. In these patients, standard parenteral nutrition may not be sufficient to maintain the immunity and provide positive or stabilized nitrogen balance. Preoperative and perioperative supplementation with immune-enhancing enteral nutrition has been reported to increase total lymphocytes and T lymphocytes and decrease circulating levels of interleukin 6 and tumor necrosis factor- alfa. There is a report which showed that glutamine dipeptide supplemented parenteral nutrition improved the cellular and humoral immune functions. The investigators aimed to evaluate the effect of postoperative glutamine-dipeptide and/or omega 3 fatty acid supplemented parenteral nutrition on the neutrophil functions and postoperative course of patients with colorectal cancer.
This prospective observational study will evaluate the safety and efficacy of first-line Avastin (bevacizumab) in combination with standard chemotherapy in routine clinical practice in patients with metastatic cancer of the colon and/or rectum. Patients will be followed for the duration of their treatment and a 30-day follow-up after the last dose of study drug.
The purpose of this study is to find out whether it is better to receive a new drug, BBI608, or better to receive no further treatment for colon or rectal cancer. To do this, half of the patients in this study will get BBI608 and the other half will receive a placebo (a substance that is designed not to do anything).
Primary Objective: The primary objective is to validate previously identified predictive/prognostic genomic DNA and expression biomarkers of response to combination bvz treatments in K-ras mutant advanced CRC (a CRC) or metastatic CRC (mCRC). Secondary Objective: 1. To test the efficacy of bvz in combination with FOLFOX in patients with newly diagnosed advanced or metastatic K-ras mutant CRC and 2. To determine the progression free and overall survival of patients under first line FOLFOX + bvz in aCRC or mCRC.
This pilot phase II studies how well computed tomography (CT) and positron emission tomography (PET) imaging works in detecting disease in patients undergoing surgery for metastatic colorectal cancer. Diagnostic procedures, such as CT and PET scans, done before and during surgery may help find colorectal cancer and help guide surgery
This study aims to determine the performance of the Exact IBD-ACRN surveillance test to detect colorectal cancer (CRC) and colorectal neoplasia in patients with inflammatory bowel disease (IBD). Patients with an IBD diagnosis for at least eight years or diagnosis of primary sclerosing cholangitis (PSC) and who are eligible for CRC screening are eligible to participate in this study. Enrolled subjects will collect a stool sample for the Exact IBD-ACRN surveillance test. Subjects must have undergone colonoscopy no more than 90 days prior to enrollment and will undergo colonoscopy or surgical intervention within 120 days of enrollment. Tissue diagnosis of CRC will be established by histopathologic examination.
Investigators propose to assess, retrospectively (from 1/7/2009) and prospectively (up to 31/12/2013,) the safety and tolerability profile (number of participants with adverse events) of standard chemotherapy and anti-angiogenic agent bevacizumab (Avastin) as first line treatment of patients with metastatic Colorectal Cancer with or without KRAS mutation. All treatment schedules that are going to be assessed are considered by the international guidelines as standard therapy for patients with metastatic Colorectal Cancer.
The treatment of the most common cancers (colon, breast, lung, liver and kidney) has recently added a new therapeutic class known as the "anti-angiogenic". It was born from a better understanding of tumor growth requires the development of neo-vessels. These new vessels are of major importance for the viability of the tumor but also the birth of metastases. This neo-angiogenesis is complex and results from an imbalance between pro-angiogenic factors and anti-angiogenic factors. Growth factor VEGF and its receptors (VEGFR-1, VEGFR-2 and VEGFR-3) are a way of survival of endothelial cells required for tumor neoangiogenesis. The anti-angiogenic drugs currently available on the market are bevacizumab (Avastin ®), sunitinib (Sutent ®) and sorafenib (Nexavar ®). The mechanism of anti-angiogenic action of these three main drugs are pharmacological inhibition of the VEGF pathway. These new anti-angiogenic therapies, however, have significant adverse effects are common and some other more serious but rare. Hypertension is the most common side effect observed in patients treated with anti-VEGF. This is usually iatrogenic hypertension controlled by antihypertensive therapy and rarely compromises the pursuit of anti-angiogenic therapy. More rarely, it can have serious consequences malignant hypertension, severe hypertension refractory reversible posterior leukoencephalopathy associated with severe hypertension have also been reported. The pathophysiology of hypertension may be due to the neutralization of major physiological effects of VEGF in endothelial cell and therefore the vascular wall. The study of the microcirculation is not only useful in the diagnosis of microvascular but also macrovascular disease in the evaluation of chronic arterial and venous severe it determines the prognosis. In these indications, capillaroscopy remains the gold standard for all work pathophysiological because visualization of phenomena measured avoids artifacts and difficulties of interpretation. It then appealed to additional technology to directly measure the capillary pressure, capillary flow velocity, and indirectly assess capillary permeability and function of lymphatic canaliculi. The simplest of these technological inputs: video microscopy and digital image analysis, have also improved the practice of routine clinical capillaroscopy in its main field of application, evaluation of microangiopathy connective. The examination can be performed more quickly and easily archived and quantified. Only two studies on 14 and 16 patients were able to see a decrease in capillary density correlated with the therapeutic activity of anti-angiogenic the tumor mass and metastasis. Thus, we propose to quantify in a number of relatively large patient patients the decrease in capillary density as well as the relationship between the decrease in the number of capillaries and anti-tumor response. The study will also aim to measure the prevalence of hypertension in patients treated with bevacizumab and to establish the link between these data and the modification of the capillary microcirculation.
There are two parts to this study: (1) an information gathering phase leading to the development of new educational materials; and (2) a study to test the newly developed material. The information gathering phase has been completed. The purpose of this part of the research study is to test the usefulness and acceptability of new educational materials investigators have developed. Investigators will compare the new educational material to another widely available educational brochure. The goal is to see if the new educational material will change knowledge and behaviors about colorectal cancer and colorectal screening.