Active clinical trials for "Colonic Neoplasms"

This study is designed to evaluate the short-term and long-term results after single incision laparoscopic surgery for colorectal cancer（SILSC） compared with conventional laparoscopic surgery for colorectal cancer（CLSC）.

This is a pilot study designed to evaluate the cutaneous effect of systemic inhibition of the tyrosine kinase pathway in the presence or absence of solar simulated light exposure. A maximum of 45 subjects will be accrued into the overall study we anticipate approximately 25 patients in the Raf inhibitor group and 10 patients each into the Tyrosine Kinase and MEK inhibitor arms of the study.

Colon cancer is the third most common cancer in men and women and over 70% of cases are preventable. A western diet, characterized by low vegetable and high red and processed meat intake, indisputably increases colon cancer risk. Heme, which gives red meat its color, is highly reactive, induces hyperproliferation and promotes DNA damage in the colon to a greater degree than any other red meat-associated carcinogen. Preclinical models indicate dietary chlorophyll, which gives green leafy vegetables their color, binds and stabilizes heme in the lumen, preventing genotoxicity. Additionally, data from our randomized controlled weight loss trial indicate increasing red meat consumption has deleterious effects on the gut microbiome, which is also implicated in colon cancer etiology. Because heme-containing foods are the richest sources of bioavailable iron and several other vitamins and minerals, mitigating their potential risks may be more beneficial than eliminating meat, poultry, fish and seafood in their entirety from the diet for risk reduction. This feasibility study will begin to explore the research question: Will adding chlorophyll-rich green leafy vegetables to the diet prevent the deleterious effects of heme-rich red meat on the human host and microbiome? The investigators will randomly assign 50 adults at increased risk of colorectal adenoma to a block randomized crossover study with two 4-week dietary regimens in which: 1) participants will be provided with frozen green leafy vegetables and counseled to consume a high chlorophyll diet including 1 cup per day of cooked green leafy vegetables and normal meat (high heme) consumption; or 2) continue their normal high heme, low chlorophyll diet (control). A 4-week washout period encouraging habitual diet will be employed between the intervention periods and data will be collected at all four time points. This study is critical in translating preclinical findings and has the potential to open the door to new knowledge and standards of care in colon cancer prevention. This study is a required step to aid in the design of a larger RCT to determine whether increased green leafy vegetable consumption mitigates the negative effects of red meat on DNA damage, inflammatory cytokines and gut microbe composition. This could lead to equally beneficial dietary guidance for colon health that might be more easily attained by the general public through addition, rather than omission of specific foods.

Colorectal cancer (CRC) is strongly affected by diet, with red and processed meat increasing risk. To understand the role of microbiome in this phenomenon and to identify specific microbiome/metabolomics profiles associated with CRC risk, will be studied: 1) healthy volunteers fed for 3 months with: a high-CRC risk diet (meat-based MBD), a normalized CRC risk diet (MBD plus alpha-tocopherol, MBD-T), a low-CRC risk diet (pesco-vegetarian, PVD). At the beginning and at the end of the intervention, gut microbiome profiles (metagenomics and metabolomics), and CRC biomarkers (genotoxicity, cytotoxicity, peroxidation in faecal water; lipid/glycemic indexes, inflammatory cytokines, oxidative stress), 2) Colon carcinogenesis: the same diets will be fed (3 months) to carcinogen-induced rats or to Pirc rats, mutated in Apc, the key gene in CRC; faecal microbiome profiles, will be correlated to carcinogenesis measuring preneoplastic lesions, colon tumours, and faecal and blood CRC biomarkers as in humans; 3) To further elucidate the mechanisms underlying the effect of different microbiomes in determining CRC risk, faeces from rats fed the experimental diets will be transplanted into carcinogen-induced germ-free rats, measuring how microbiome changes correlate with metabolome and disease outcomes. The results will provide fundamental insight in the role of microbiome in determining the effect of the diet, in particular red/processed meat intake, on CRC risk

The goal of the project is to increase colorectal cancer screening within the priority population of female and male adults age 50 to 85 in Northern Nevada. A successful community-based cancer patient navigator program will be modified in partnership with the community into a multi-level screening intervention.

Filipino Americans have lower rates of colorectal cancer (CRC) screening, later stage of diagnosis and poorer survival relative to other racial/ethnic groups. To address this disparity, the investigators developed a multi-component intervention to increase CRC screening and have determined its efficacy in a randomized trial (Maxwell,et. al., 2010). This study aims to determine how an intervention to increase CRC screening can best be integrated within the cultural norms and existing structures of churches and community based organizations (CBOs) with predominantly Filipino American membership to ensure broad dissemination to those in need of screening. The investigators will provide our partner CBOs with resources and technical assistance, including training of community volunteers as health advisors, to enable them to promote CRC screening to their constituents. Using a scientifically rigorous research design, the investigators will compare two dissemination strategies: Basic dissemination which consists of a single kick-off event during which community health advisors will receive print materials and FOBT kits for distribution and training on how to conduct educational small-group sessions; and Organizational dissemination aimed at integrating CRC screening dissemination into organizational practices and processes that can be sustained after the end of the study. The study will be implemented in 20 CBOs and will train 100 community health advisors (CHAs). The impact of the two dissemination strategies will be comprehensively assessed by collecting data at the CBO level, from the CHAs and from 1000 Filipino American participants. The investigators will compare the proportion of Filipino American participants who obtain CRC screening by dissemination strategy, but the investigators will also assess how many are reached, if the intervention is implemented as planned, how CBOs support the screening efforts at their regular activities, and if CBOs and CHAs maintain their efforts over the 4 years of the study. The investigators hypothesize that CBOs can implement evidence-based strategies to promote CRC screening and CHAs in the organizational dissemination arm will reach more participants and more screened participants than CHAs in the basic dissemination arm; and organizations in the organizational dissemination arm will adopt more CRC screening activities and maintain these better than organizations in the basic dissemination arm.

Primary Aim: To evaluate the effect of a lifestyle intervention delivered through telephone-based motivational interviewing (MINT) versus a patient navigation intervention on blood pressure reduction and CRC screening. Hypotheses: Among black men, aged > 50 years with uncontrolled HTN and in need of CRC screening: Hyp. 1: those randomized to the lifestyle intervention will have lower BP compared to those randomized to the patient navigation intervention at 6 months. Hyp. 2: those randomized to the patient navigation intervention will have higher CRC screening rates compared to those randomized to the lifestyle intervention at 6 months.

This randomized phase II trial is studying how well erlotinib hydrochloride works in treating patients with stage I-III colorectal cancer or adenoma. Erlotinib hydrochloride may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth and by blocking blood flow to the tumor. Erlotinib hydrochloride may also stop tumors from growing or coming back

Chemoprevention therapy is the use of certain drugs to try to prevent the development of cancer. The use of celecoxib has been approved for use in reducing the number of adenomatous colorectal polyps in familial adenomatous polyposis (FAP). It is not known whether there is a clinical benefit from a reduction in the number of colorectal polyps in FAP patients. The use of celecoxib may be an effective way to prevent the development of sporadic adenomatous polyps, precursors of colorectal cancer. This randomized phase III trial is studying celecoxib to see how well it works compared to a placebo in preventing the development of adenomatous colorectal polyps in patients who have had at least one polyp removed.

This clinical trial aims to evaluate the safety and feasibility of mid-line fascial suturing using MONOFIX sutures in patients undergoing minimally invasive surgery for colorectal cancer.