View clinical trials related to Colorectal Cancer.
Filter by:The study is testing an intervention of an investigator-developed chemotherapy dose adjustment algorithm. The primary objective of this study is to evaluate the effectiveness of the chemotherapy dose adjustment algorithm for reducing unplanned delays in patients receiving FOLFOX (5-fluorouracil, leucovorin, and oxaliplatin)-type chemotherapy, while maintaining acceptable chemotherapy dose-intensity.
The prognosis of patients with metastatic right-sided colon cancer is worse than that of patients with metastatic left-sided cancer. Different guidelines have different recommendations on specific conversion therapy for colorectal liver metastases. The United States NCCN guidelines do not recommend standard chemotherapy combined with anti EGFR monoclonal antibody for patients with right colon cancer. The European ESMO guidelines recommend that patients with Ras / BRAF wild-type right-sided colon cancer should first consider three drugs ± bevacizumab, but considering the objective response rate results, standard chemotherapy + anti EGFR monoclonal antibody is still one of the choices. China CSCO guidelines recommend standard chemotherapy ± bevacizumab, and also recommend standard chemotherapy + cetuximab for patients with right-sided colon cancer. Therefore, the targeted therapy for RAS / BRAF wild-type metastatic right colon cancer is still controversial. Therefore, we are ready to carry out the clinical trial of cetuximab and bevacizumab in conversion therapy for RAS / BRAF wild-type metastatic right colon cancer. The conversion resection rate is the primary point, and the objective response rate, perioperative safety and long-term survival are the secondary points.
establishment and validation of the prediction model of avastin plus chemotherapy as first line treatment in simultaneous ras mutant unresectable CRLM patients
Oxaliplatin has been used as the first choice for the adjuvant chemotherapy of colorectal cancer and it has significantly improved the outcomes in patients with colorectal cancer. However, hepatotoxicity is the potentially problematic adverse effect of oxaliplatin. The pathological evaluation of non-tumoral liver from patients with advanced colorectal cancer undergoing neoadjuvant oxaliplatin-based treatment has provided histological evidence of hepatic sinusoidal injury. Oxaliplatin-induced sinusoidal injury can persist for more than 1 year after the completion of chemotherapy, and the increase in splenic volume may be a predictor of irreversible sinusoidal damage. In this current study, we aim to evaluate the efficacy of individualized treatment in patients with oxaliplatin-induced gastroesophageal varices after colorectal cancer surgery.
Oxaliplatin has been used as the first choice for the adjuvant chemotherapy of colorectal cancer and it has significantly improved the outcomes in patients with colorectal cancer. However, hepatotoxicity is the potentially problematic adverse effect of oxaliplatin. The pathological evaluation of non-tumoral liver from patients with advanced colorectal cancer undergoing neoadjuvant oxaliplatin-based treatment has provided histological evidence of hepatic sinusoidal injury. Oxaliplatin-induced sinusoidal injury can persist for more than 1 year after the completion of chemotherapy, and the increase in splenic volume may be a predictor of irreversible sinusoidal damage. In this current study, the investigators aim to evaluate the values of potential biomarkers in diagnosing patients with oxaliplatin-induced gastroesophageal varices after colorectal cancer surgery.
Most cancer-related deaths are caused by distant metastases, which are tumour cells that have escaped from a primary tumour and passed into the bloodstream to colonize a new organ. In this context, communication between tumour and stromal cells is essential. Indeed, tumor cells interact with cells in the tumor microenvironment and are able to modify them to their advantage. Both extracellular vesicles (EVs) and exosomes are heterogeneous populations of small vesicles present in the tumor microenvironment and in body fluids that have recently emerged as powerful mediators involved in this communication and their transport in fluids. Tumor cells release large quantities of exosomes containing tumor markers, which can then spread to distant locations. The exosomes are of endosomal origin. They are composed of proteins, lipids, RNA and DNA, and they circulate in the bloodstream. They can be internalized by specific distant cells and thus deliver a functional message. It has recently been shown that tumor exosomes containing pro-metastatic factors form pre-metastatic niches, before the tumor cells actually arrive, while determining the metastatic organotropism of tumors. These properties are now opening up new avenues of research in tumor biomarkers. In recent years, several studies have highlighted different markers contained specifically in exosomes derived from cancer cells. Consequently, exosomes are considered as potential reservoirs of tumor biomarkers that could be clinically useful for the non-invasive diagnosis of cancer, with the advantage of being performed by liquid biopsy. The study of microRNA (miRNA) is of particular interest. Indeed, miRNAs are small non-coding RNAs (between 21 and 25 nucleotides) involved in the regulation of gene expression and which are frequently deregulated in cancer. Several studies underline that the variation of free miRNAs in the blood is correlated with the progression of the disease, particularly in colon cancer. However, the stability of free miRNAs is controversial. Therefore, exosomes represent a very advantageous means of transporting miRNAs in the blood, as they are able to protect miRNAs from degradation by RNAase. The hypothesis of the project is that circulating exosomes derived from tumours contain markers including specific miRNAs that could be used as biomarkers of early prognosis (survival and progression), easily measured in blood samples from patients with colon cancer. But other molecules contained in exosomes could also be of interest.
To investigate whether the dose predicted by pre-therapy 99mTc MAA SPECT predicts the dose to the liver from the 90Y microspheres as assessed by post-therapy 90Y SPECT/CT or positron emission tomography (PET)/CT.
The aim of this research is to evaluate the quality of life of patients over 75 years of age undergoing palliative chemotherapy for digestive cancer. It is a non-interventional study that evaluates the quality of life before and after a cycle of chemotherapy with a composite criterion including: a standardized questionnaire "Cancer specific quality of Life questionnaire" (QLQC30), an assessment of autonomy by "Activity of daily living" questionnaire (ADL), and the number of days of hospitalization.
Observational study to assess barriers for colorectal cancer treatment compliance in India, including quantitative assessment of catastrophic expenditure incidence and qualitative assessment of financial and non-financial barriers.
Investigating people with bowel symptoms uses a test that detects traces of blood in the stools, the FIT test. There are many possible reasons for positive tests. A few people have cancer. However, most participants with symptoms don't have any serious bowel disease but have benign problems such as piles or irritable bowel syndrome (IBS). It is very difficult to diagnose on symptoms alone, those participants who have serious bowel disease and those who do not. After a positive test, people are invited for colonoscopy - a sort of articulated tube that is passed up the bowel. Most people invited for colonoscopy don't have cancer. Only about 5% of those with positive FIT tests have cancer. About 25% have other bowel diseases, but most have nothing serious wrong at all. So they have the inconvenience and discomfort of colonoscopy but don't get any benefit from it. The investigators want to try adding another test, the volatile organic compound (VOC) test, to see if the investigators can separate those with positive FIT tests who do have something wrong, from those who don't. The VOC test uses a urine sample. Using both tests might also be better for detecting cancer. FIT alone misses about 20%. So the investigators think that using both tests might not only be better for detecting cancer, but also might mean that a lot of people will avoid having to have colonoscopy. This study will recruit 1,819 participants with bowel symptoms from NHS trusts in the UK. They will provide stool samples for FIT and urine for VOC analysis. They will have colonoscopy to get a definite diagnosis. Then the investigators will look at their FIT and VOC test results to see if in future, people with both tests negative.