View clinical trials related to Colorectal Cancer.
Filter by:Interethnic variability in chemotherapy response is becoming increasingly evident, making approaches for customizing chemotherapy treatment to different ethnic populations desirable. At the same time, significant genetic variation has also been observed between ethnic groups, including many germline and somatic pharmacogenetic variants involved in chemotherapy pharmacology. Recently, based on meta-analyses of studies on germline pharmacogenetic variant frequencies and clinical trials, the investigators found that chemotherapy outcomes between Asians and Caucasians colorectal cancer (CRC) patients could potentially be inferred from the frequencies of variants between the ethnic groups and their respective biological functions. In this study, the investigators seek to further clarify the validity of using pharmacogenetic variants to customize chemotherapy between ethnicities through the following specific aims: (1) To verify the differences observed in the frequency of germline pharmacogenetic variants related to chemotherapy between Asian and Caucasian CRC patients, (2) To test whether variations in the frequency of somatic pharmacogenetic gene mutations between Asian and Caucasian CRC patients could be used to infer differences in clinical outcomes between the two ethnicities. (3) (4) For Aim 1, DNA samples from approximately 1000 Asian and Caucasian CRC patients each will be analyzed for the frequency of a panel of germline pharmacogenetic variants identified in our meta-analyses using high-throughput methodology. For Aim 2, meta-analyses will be performed on pharmacogenetic studies and clinical trials to establish the relative frequencies of somatic variants and clinical outcomes in Asian and Caucasian CRC patients. These frequencies will be verified on the same series of DNA samples used in Aim 1. The clinical outcomes inferred from the frequency differences and biological functions will then be compared to those summarized from clinical trials. This data could provide a basis for developing a rational approach to customizing chemotherapy in non-Caucasian populations and improve assessment of drug feasibility in different ethnic populations.If validated, this working hypothesis would be of high clinical interest, giving the opportunity to use this as a DNA prognosis biomarker in CRC. Pharmacogenetic frequencies could be a potentially useful approach for predicting likely chemotherapy outcomes in non-Caucasian populations
The aims of this four-year study are to 1. explore the relationships between fatigue and muscle strength (i.e., upper limbs and lower legs) 2. comparison with the effects of 8-week, 12-week moderate intensity of walking program on muscle strength and fatigue. 3. develop a clinical guidelines of home-based walking program for patients with colorectal cancer receiving active treatment and survivors in Taiwan. 4. explore the relationships among the self-report fatigue intensity and metabolism.
The purpose of this study is to assess whether in a population of patients with advanced colorectal cancer for which no known effective therapy is available, measuring the spontaneous evolution of tumoral metabolic progression index by serial FGD PET-CT and Diffusion MRI can show that tumor growth rate is related to the patient's outcome, and that serial FDG PET-CT and Diffusion MRI are able to measure it.
Objective: To assess the effect of bevacizumab on tumor vessels, and the reversibility of the effect, using contrast-enhanced ultrasonography (CEUS) and histology in patients with metastatic liver tumors derived from colorectal cancer. Background Data: Direct evidence on the reversibility of any change in tumor vascularity upon bevacizumab cessation in the clinical setting is lacking. Methods: The study included 10 patients who received chemotherapy including bevacizumab, experienced a reduction in tumor vascularity as demonstrated by CEUS and consequently underwent liver resection. CEUS was performed before and immediately after 4 courses of chemotherapy and one day before surgery. The number of microvessels highlighted by anti-CD34 antibody in the viable tumor tissue was counted to quantify the microvessel density (MVD). As a control, 10 surgical specimens from 10 patients who had not received chemotherapy were examined.
Sox2 has been studied in several types of human solid tumors. The investigators found that Sox2 had higher expression level in colorectal cancer and metastatic tissues than normal tissues. So the investigators assumed that whether Sox2 plays an important role in the progression and migration of colon cancer.
A life threatening disease such as cancer may lead to post traumatic stress disorder, and even when reporting low levels of side-effects from cancer disease and treatment, 80% report high levels of stress symptoms. The purpose of the present randomised controlled trial is to examine the psychosocial effects of a stress management intervention based on cognitive behaviour therapy and with focus on increased physical activity in patients with various cancer diagnoses using a stepped-care approach. When using a stepped-care approach it is possible to study the level and intensity of stress management intervention required to achieve increased well-being. A cost-utility analysis will also be performed. 300 adult patients with a recent diagnosis of breast-, colorectal- prostate, testicular cancer or lymphoma and scheduled for adjuvant and/or curative oncologic treatment at Haukeland University Hospital, will be consecutively included in the prospective intervention study. The patients will be randomized to intervention or control. In step 1, all patients in the intervention group (I-a) will receive 2 counselling sessions. Patients who report clinically significant levels of stress, such as intrusive thoughts/avoidance behaviour (measured by Impact of Event Scale) and/or worry and depressions (measured by Hospital and Depression Scale) will be included in Step 2 (I-b) and include another 4-7 counselling sessions. There will also be a focus on motivating to increase physical activity level. Both the intervention (I) and control group (C) are allowed to take part in the common rehabilitation program with patient education and physical training. Data will be collected with self-reported standardized questionnaires. Objectively measures of physical activity level, sleep and daily energy expenditure are recorded with SenseWear™ Pro3 Armband. Measure point is at inclusion and than after 6 week, 4, 8, 12 and 24 month.
The aim of colonoscopy is to visualize the inside of the entire large bowel. Several factors can make the procedure difficult, and sometimes a complete examination is not possible. Complicating factors include poor bowel preparation and technical challenges such as differences in anatomy (long, redundant colonic segments), post-surgical adhesions, strictures and diverticulosis. A special endoscope with two inflatable balloons, originally designed to examine the small bowel, has been used for several years with success in such technically difficult colonoscopies. More recently a modified double-balloon instrument was designed specifically for colonoscopy, but the documentation of the performance of this instrument is limited. The aim of the present study is to investigate the performance of the double-balloon colonoscope in cases where conventional colonoscopy have failed due to technical difficulties.
Water immersion insertion has been documented to decrease procedure-related discomfort during colonoscopy. There was used warm water infusion for colonoscope insertion in most of the water immersion colonoscopy trials. The investigators have been using room temperature water (20-24°C) for water immersion and the investigators did not notice any drawback of it. In our opinion, it is simpler and cheaper option for water immersion colonoscopy and proof of its efficacy and safety could support the use of water immersion technique in routine practice. The primary endpoint is cecal intubation time and the investigators suppose that the use of warm water infusion does not shorten it significantly. Patient comfort during colonoscope insertion, water consumption, length of the scope while reaching the cecum, need for external compression, need for positioning of the patient and endoscopist´s difficulty with colonoscopy will be also assessed.
The study aims to show non-inferiority in the clinical performance of the investigational assay, Epi proColon, to FIT using matched blood and stool specimens from screening-guideline eligible subjects.
The purpose of this study is to evaluate whether supplementation 2g/day encapsulated fish oil modifies inflammatory markers in individuals with colorectal cancer in chemotherapy