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The role of radiotherapy in metastatic cancer has historically been limited to palliation while metastasectomy or radiofrequency has emerged as playing a major role in disease control. Although resection is the standard of care for liver metastasis, 80-90% of patients are not resectable at diagnosis in particular because of the presence of oligometastases. Factors that favour a truly oligometastatic state include a long latent interval between the treatment of the primary tumor and the appearance of metastases. Oligometastatic cancer is a very heterogeneous disease with respect to several factors including the location of the primary tumor. With the advent of extracranial stereotactic body radiation therapy (SBRT), higher biological equivalent doses can be safely delivered in 3 to 5 fractions, thus potentially ablating all the tissue in the treated area while protecting more efficiently the hosting organ and healthy tissues surrounding the tumors. In patients with liver oligometastases, in-field local control rates at 2 years range from 70% to 90% with less than 5% severe grade 3 or higher toxicity rates. Retrospective studies indicate that roughly 20% of the patients remain disease-free 2 to 4 years after SBRT. For patients treated with SBRT some authors found that half of the patients had either no metastatic progression or very little progression in terms of number and site of metastases. The patterns of failure after SBRT for oligometastases in one organ showed that 73% of patients eventually developed new metastases with higher than 80% occurring as new metastases in the same index organ. These findings support the idea of an oligometastatic state in which aggressive local therapy could improve progression-free survival (PFS). With this phase III study, we sought to evaluate the impact of SBRT on PFS at 2 years in patients with synchronous or metachronous liver-only oligometastases from colorectal cancers patients after a first line chemotherapy for metastatic disease but not having progressed during first line chemotherapy and up to 1 year
The primary objective of this multicenter, prospective, randomized study is to evaluate the performance of Pure-Vu System in cleansing patients' colon who are indicated for a colonoscopy procedure using one of two different reduce bowel preparation regimes.in addition, the cecum intubation rate, time to cecum, total procedure time, and adverse event will be evaluated.
This will be a pilot study involving 5 patients diagnosed with colorectal carcinoma and treated with pre-operative chemotherapy and external beam radiation therapy at the Jewish General Hospital, whom will very soon undergo surgery. Participants will be sensitized by the instillation of a 250 mL enema containing 1.6 mmol of HAL. The enema will be administered with a plastic tube with an inflatable blocking balloon to prevent leakage of the enema. Fluorescence sigmoidoscopy will be performed with white light then blue excitation light after retention of the enema for 60 minutes, followed by a rest time of up to 30 minutes before rectoscopy. Red fluorescence should be induced by illumination with blue light. Pictures with and without fluorescence will be taken. The patients will undergo a colectomy (partial or complete) within the next 2-3 days and the surgical specimens will be collected for further fluorescence microscopy studies and pathological correlation of fluoresce with malignant pathology/histology as the gold standard. The total concentration of porphyrins in the patients' urine and serum will be recorded before sensitization, immediately after sensitization (instillation of the enema), and approximately 24 hours after sensitization. The patients' pre-and-post operative liver function tests will be measured. Adverse events will be reported by direct questioning of all patients with regards to photosensitivity and gastrointestinal symptoms (nausea, vomiting), and by measuring blood pressure and heart rate. Our objectives and endpoints are: 1) to determine if fluorescence with photodynamic diagnostics is selective for colorectal cancer, 2) to determine if photodynamic diagnostics has the potential to improve the detection of malignant cell after neoadjuvant chemotherapy and radiation, and 3) to determine if photodynamic diagnostics can provide an accurate depiction of the extent of disease burden not visible with normal white light sigmoidoscopy to the naked human eye.
Various antiangiogenic agents have a modest effect in prolonging overall survival in solid tumours. In colorectal cancer it is clear that there are some patients in whom bevacizumab significantly prolongs survival, but it is not effective in the majority of patients. Biomarker studies using tumour tissue and blood have failed to define a consistent biomarker that correlates with a beneficial effect of bevacizumab on survival. DCE-MRI can detect changes in tumour blood flow which, in early phase drug studies, correlated with subsequent tumour responses, but is too expensive and time consuming to be used in larger scale trials. DCE-US is a promising biomarker for use in this group of patients with antiangiogenic agents, as detailed above. The investigators wish to use this technique as a predictive biomarker for any effects Aflibercept has on OS and PFS in patients with metastatic colorectal cancer refractory to standard treatment.
In Canada, over 102,900 men are diagnosed with cancer each year. Of these, 81,000 are diagnosed with colorectal cancer and an estimated 65% are expected to survive the disease for at least 5 years. Men who have completed treatment for colorectal cancer face many adverse physical, cognitive, psychological, and social effects. The Wellness Beyond Cancer Program at The Ottawa Hospital is a cancer survivorship program that helps people who have completed treatment for cancer, including men diagnosed with colorectal cancer, manage these effects. The Wellness Beyond Cancer Program does this through education and referral to supportive care services and programs offered throughout the city of Ottawa. Group-based physical activity programs are one of the varied services and programs available to adults diagnosed with cancer in Ottawa. Such programs are offered through the Ottawa Regional Cancer Foundation (http://www.ottawacancer.ca) and Breast Cancer Action Ottawa (http://bcaott.ca). Research on these programs show that group-based physical activity can improve disease and treatment-related effects while promoting overall quality of life amongst women with cancer. However, few of these programs have targeted men, even though their needs and preferences have been shown to be very different from women. While men diagnosed with colorectal cancer might also benefit from group-based physical activity programs offered in the community, it is not known if such programs would effectively reach them and what the impact would be on their quality of life after cancer treatment. It is believed that a men's group-based walking program could be an effective way to reach men and promote quality of life after cancer treatment. Therefore, a sustainable 8-week group-based walking program was developed. This project will seek to explore the feasibility and potential benefits of the program among men who have completed treatment for colorectal cancer and who are referred to the program from staff at the Wellness Beyond Cancer Program in a prospective single-arm trial.
A phase 1b/2a study evaluating the combination of MM-151 + nal-IRI + 5-FU + Leucovorin in RAS/RAF wild-type Metastatic Colorectal Cancer.
Two-part phase 1B clinical trial combining cextuximab and savolitinib for treating Ras wild-type colorectal cancer (CRC). Part 1 will assess the safety and tolerability of this drug combination and will include patients with squamous cell carcinoma of the head and neck cancer, as well as patients with CRC. Part 2 of the study, the focus of this registration, will obtain further safety data for the combination of cextuximab and savolitinib and will look at the efficacy of cextuximab and savolitinib in Ras wild-type mCRC that was previously treated and relapsed on cetuximab or panitumumab.Correlative studies will examine tumor and blood specimens for mechanisms of anti-EGFR resistance and response to MET inhibition.
The purpose of this study is to investigate Suprep bowel preparation, with and without the anti-gas medication simethicone, in terms of efficacy and patient tolerability in the preparation of patients undergoing routine colonoscopy for colorectal cancer screening.
The objective of the clinical trial is to determine the suitability of the FMwand Ferromagnetic Surgical System for Total Mesorectal Excision Surgery.
The primary hypothesis is that a comprehensive transitional care program based on the premise of a patient-centered medical home versus routine care reduces emergency room visits and hospital readmissions without increasing costs among cancer patients undergoing surgery at a large safety-net hospital.