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Acetylsalicylic acid (ASA) seems the ideal colorectal cancer (CRC) chemoprevention agent. Several ongoing trials are testing the effect of ASA as co-therapy in CRC. The mechanisms of action, the appropriate dose and the ideal target population are unknown. The investigators have demonstrated that doses of 100 mg of ASA induce direct and partial but persistent acetylation of the cyclooxygenase (COX) isoenzyme COX-1 in the normal colorectal mucosa. The primary objective is to perform a study of aspirin by using a proteomic assay for comparing platelet COX-1 and CRC mucosal COX-1 after different doses of ASA. Secondary objectives are: the measurement of prostaglandin E2 (PGE2) and phosphorylated S6 protein (p-S6) levels in CRC mucosa, the assessment of indirect biomarker of aspirin action (serum thromboxane B2 (TXB2) and urinary levels of 11-dehydro-TXB2 (TX-M)), the evaluation of systemic biomarkers of inflammatory/tumorigenic COX-2 by assessing urinary levels of major metabolite of PGE2 (PGE-M). Methods: Phase II randomized clinical trial in 60 patients with newly diagnosed CRC in 3 groups of 20 patients receiving 100 or 300 mg/day, or 100 mg/12 hours of enteric-coated ASA for 3±1 weeks, prior to definitive treatment by surgery. Main outcome: Acetylation of COX-1 and COX-2. Eicosanoid levels in target organs. Expected results: Evidence for the current uncertainty about the mechanisms of action and the dose required to obtain the best chemopreventive effect with ASA in CRC. Confirm acetylation of COX as a key biomarker of efficacy with ASA.
This trial will study SGN-CD47M to find out whether it is an effective treatment for different types of solid tumors and what side effects (unwanted effects) may occur. The study will have two parts. Part A of the study will find out how much SGN-CD47M should be given for treatment and how often. Part B of the study will use the dose found in Part 1 and look at how safe and effective the treatment is.
The purpose of this study is to study the impact of Western lifestyle, including moderate alcohol consumption and delayed eating patterns on studying individuals' susceptibility to colorectal cancer. This study aims to increase our ability to identify individuals at risk for colorectal cancer in the future. Each subject will experience four conditions (each for one week in duration with a week +/- 2 days wash-out in between): (1) "right-time eating" / no alcohol, (2) "right-time eating" / with alcohol, (3) "delayed-eating" / no alcohol, (4) "delayed-eating" / with alcohol. The order of experiments will be randomized [concealed randomization]. All subjects will undergo unprepped sigmoidoscopy after each week of intervention. In Aim 2, all subjects will have an option to undergo a 24h circadian assessment in the Biological Rhythms Research Lab after each week of intervention. The Investigator will assess (i) central circadian rhythms by collecting hourly salivary samples for melatonin assays and (ii) peripheral rhythm in the intestinal tract by buccal swabs once every 2h (12 time points) as well as by rectal sampling twice (every 12 hr). For Aim 3, sigmoidoscopy without sedation will be used to obtain colonic samples as the safe method compared to colonoscopy, which has some small but finite risks associated with the procedure (e.g, bleeding or perforation) as well as sedation.
The aim of this study is to confirm the performance of the CB-17-08 software as a medical device (SaMD) to help endoscopist during the colonoscopy procedure to find potential mucosal lesions, including polyps, adenomas and carcinomas, without significant noise disturbing the endoscopist attention, nor negative interference with the lesions detection than with the standard endoscopy video alone. The study will evaluate whether high-definition white-light (HDWL) colonoscopy using CB-17-08 SaMD will have a lower miss rate of clinically significant polyps, as compared to standard HDWL colonoscopy alone (the current standard of care for colonoscopy).
The purpose of this study is to evaluate the dose, safety, immunogenicity and early clinical activity of GRT-C903 and GRT-R904, a neoantigen-based therapeutic cancer vaccine, in combination with immune checkpoint blockade, in patients with advanced or metastatic non-small cell lung cancer, microsatellite stable colorectal cancer, pancreatic cancer, and shared neoantigen-positive tumors.
This study evaluates the effect and safty of PD-1 monoclonal antibody-activated autologous peripheral blood lymphocyte (PD1-T) combined with XELOX and bevacizumab in the first-line treatment of recurrent and metastatic colorectal cancer. Half of participants receive PD1-T combined with XELOX and bevacizumab, while the other half will receive XELOX and bevacizumab.
This is a Phase 1/2, multi-center, open-label basket study designed to evaluate the safety and anti-tumor activity of IDE196 in patients with solid tumors harboring GNAQ or GNA11 (GNAQ/11) mutations or PRKC fusions, including metastatic uveal melanoma (MUM), cutaneous melanoma, colorectal cancer, and other solid tumors. Phase 1 (dose escalation) will assess safety, tolerability and pharmacokinetics of IDE196 via standard dose escalation scheme and determine the recommended Phase 2 dose. Safety and anti-tumor activity will be assessed in the Phase 2 (dose expansion) part of the study.
Colorectal cancer is one of the most common malignancies in China. Regorafenib is the standard multi-kinase inhibitor for refractory advanced colorectal cancer. In mice, regorafenib combined with anti-PD-1 was shown superior to regorafenib, which has not yet been verified in humans. JS001 is the Chinese anti-PD-1 monoclonal antibody for injection which has been approved for melanoma. This study is the first multi-center, open-label, phase I/II clinical trial to evaluate tolerability, safety and efficacy of JS001 in combination with regorafenib tablet in patients with MSS/MSI-L/pMMR, relapsed or metastatic colorectal cancer who have failed or can not tolerate fluorouracil, oxaliplatin and irinotecan based systemic treatment. The phase I clinical trial is to determine the maximum tolerated dose (MTD) and dose limiting toxicity (DLT) of regorafenib tablet in this regimen, and select an acceptable safe dose for the phase II clinical trial to further determine safety and efficacy of this combination regimen in patients with metastatic colorectal cancer.
This study will evaluate the effects of substituting red and processed meat in the diet with Quorn; a meat replacement product, on biomarkers of gut health. This will be a crossover design where participants will take part in 2 study periods where they will consume a diet containing red and processed meat during one of the study periods, whereas in the other study period, they will consume a diet containing Quorn.
Context : Colorectal cancer (CRC) mass screening has been implemented in France since 2008. Participation rates remain too low. The objective of this study is to test if the implementation of a training course focused on communication skills (whether in-person or e-learning) among general practitioners (GP) would increase the delivery of gFOBT and CRC screening participation among the target population of each participating GP. Method : Pragmatic controlled cluster randomized trial with 2 parallel groups: Control versus Educational Intervention Intervention ; six hour educational training either in person or through e-learning The Main objective: is to evaluate the effectiveness of an educational intervention teaching physicians the patient-centered approach, either in-person or through e-learning, by evaluating their patients' participation in colorectal cancer (CRC) screening for all risk categories.