Active clinical trials for "Colorectal Neoplasms"

The standard way of screening for colorectal cancer is to have a series of fecal blood tests, where a sample is taken from a participant's stool, or an endoscopic procedure performed by a doctor, where a camera is used to look inside the bowel. This research study will use a test performed by the participant. This test will look for changes in the stool that can identify if participants are at higher risk for cancer. Another aim of this study is to better understand what firefighters and retired firefighters think about colorectal cancer and other health issues. This information will help us develop programs that may improve colorectal cancer outcomes in the firefighter community.

Based on the magnesium (Mg) tolerance test, the "gold standard" test of Mg status, more than 50% US participants had Mg deficiency. Observations suggest that the associations between high Mg intake and disease risks may completely differ by the underlying Mg status. Due to major limitations, the Mg tolerance test is not used in conventional clinical practice and rarely used in research. Instead, serum Mg is used for clinical diagnosis. However, serum Mg performs very poorly at identifying those with Mg deficiency. There is a great need to develop implementable, sensitive, and specific biomarkers which can be easily used for identifying people with Mg deficiency. It is known that DNA methylation changes are inducible by environmental exposures, including nutrients, and reversible when the exposure disappears. We propose to identify 5-hmC/5-mC biomarkers for Mg deficiency by a 4- phase EWAS study in the "Personalized Prevention of Colorectal Cancer Trial [PPCCT, R01CA149633; PI, Dai & Yu]" with a total of 240 participants. Mg tolerance test will be used as the gold standard. Finally, using newly identified biomarkers, we will evaluate if 12-week Mg treatment reduces TRPM7 expression, essential in Mg homeostasis and colorectal carcinogenesis, in rectal tissues only among those with Mg deficiency.

Objectives: Colonoscopy and stool-based testing are the two predominant colorectal cancer (CRC) screening tests used in the US, and both reduce colorectal cancer mortality. However, only 62% of Americans are up to date with screening, partly because many individuals find these two tests inconvenient or unacceptable for a variety of reasons. There is an unmet need for a non-invasive test that does not require bowel preparation or handling stool, and the Septin9 DNA blood test may be an alternative for those individuals who would otherwise remain unscreened. Aims: Aim 1: To measure screening uptake with a blood test in screen-resistant patients who have declined both colonoscopy and fecal immunochemical testing (FIT) at the Manhattan VA Medical Center Sub-Aim 1a: To assess the proportion of those with a positive blood-based screening test who undergo diagnostic colonoscopy Sub-Aim 1b: To describe the endoscopic findings on diagnostic colonoscopy Aim 2: To survey screen-resistant patients to understand their beliefs and attitudes about colorectal cancer screening and testing options We hypothesize that a substantial proportion of patients who have refused colonoscopy and FIT will accept the blood test. We hypothesize this will be driven by the convenience of the blood test. Methods: This will be randomized controlled trial of individuals who have refused colonoscopy and FIT within past 6 months. Eligible patients will be randomized 1:1 to the intervention or control group. Both groups will be invited to participate in navigated colonoscopy or FIT by letter and telephone call. The intervention group will also be invited to participate in the blood test if they refuse colonoscopy and FIT. We will enroll 180 participants in each group (total n=360).

Lubiprostone as an adjunct to the standard bowel preparation regime the quality of bowel preparation can be improved for a good colonoscopic examination without missing lesions and complications.

We hypothesize that high definition narrow band imaging (NBI) colonoscopy compared to high definition white light colonoscopy will detect an increased number of nonpolypoid (flat and depressed) colorectal neoplasm.

In this randomized multicentric phase II study, patients with colorectal carcinoma with resectable hepatic metastasis will be randomized to treatment with dendritic cells or to observation, following conventional treatment with surgery and chemotherapy.

This study is designed to test a standard mailed intervention (SI) versus a novel decision support and navigation intervention (DSNI). Working with patients and stakeholders, this randomized trial will include 400 Hispanic men and women who are 50 to 75 years of age, patients in community based primary care practices, and are eligible for CRC screening. We will consent, survey, and randomize participants either to the SI Group (n=200) or the DSNI Group (n=200). Study specific aims are to: (1) Assess intervention (DSNI versus SI) impact on overall CRC screening adherence; (2)Assess intervention (DNSI versus SI) impact on CRC screening decision stage; (3) Assess intervention (DNSI versus SI) impact on test-specific CRC screening adherence; and (4) Assess intervention (DNSI versus SI) impact on CRC and knowledge and perceptions.

This study will look at measuring the activity of natural killer (NK) cells using the in vitro diagnostic device NK Vue in subjects being screened for colorectal cancer using colonoscopy. The NK Vue diagnostic test for natural killer cell activity uses the principle of stimulation of whole blood with a proprietary cytokine followed by the quantitative detection of interferon gamma using an immunoassay. NK Vue is intended to be used for the monitoring of the immune status of individuals. Measurement of NK cell activity could be a useful tool for assessing changes in immunosurveillance in patients with conditions or diseases where NK cell activity has been shown to be reduced, such as colorectal cancer.

Family health history can help identify patients at higher than average risk for disease. There is no standardized system for collecting and updating family health history, using this information to determine a patient's disease risk level, and providing screening recommendations to patients and providers. Patients will enter their family health history into MeTree, a family history software program. The program will produce screening recommendations tailored to the patient's family health history. The investigators will examine whether this process increases physician referrals for, and patient uptake of, guideline-recommended screening for colorectal cancer.

The purpose of this study is to evaluate the efficiency of a resorbable barrier membrane for the prevention of abdominal and peri-hepatic adhesion in patients with colorectal cancer requiring two-stage surgery for the resection of hepatic metastases. Eligible patients will be randomly assigned to one of 2 arms: Seprafilm group (receiving resorbable barrier membrane during the first surgery) No-treatment control group (without seprafilm barrier during the first surgery) The primary objective is to establish, in patients with colorectal cancer requiring two-stage surgery for the resection of hepatic metastases, the efficiency of a resorbable barrier membrane (Seprafilm) for limiting abdominal and peri-hepatic adhesion during the second operation. This study is a prospective multicentric phase II, controlled, randomized and non comparative trial. A total of 60 patients will be enrolled: 45 will receive Seprafilm whereas 15 will be assigned to the no-treatment control group. The inclusion period should be approximately 18 months. The follow up period after the second surgery will be 3 years.