Active clinical trials for "Polyps"

To evaluate the efficacy of Doxycycline as an adjunct to systemic steroids in the treatment of chronic rhinosinusitis with nasal polyps

Topical and systemic steroids constitute the first choice in medical treatment for nasal polyps. Glucocorticoids sensitivity is significantly correlated with CST1 in nasal secretions. The goal of this randomized, double-blind, placebo-controlled clinical trial is to clarify the efficacy of a short course of CST1-guided oral glucocorticoids therapy for chronic rhinosinusitis with nasal polyps. Subjects were randomized to receive either oral glucocorticoids or oral placebo for 2 weeks. Endoscopic polyp score, Total Nasal Symptom Score(TNSS), SNOT-22 score, Cystatin 1 and other biomarkers were evaluated before and after the treatment. Researchers will compare oral glucocorticoids group and oral placebo group to test CST1 predictive model of glucocorticoid therapy for Chronic Rhinosinusitis with Polyps.

Background: Removal of adenomatous polyps during colonoscopy is associated with long-term prevention of colorectal cancer-related deaths. Recently, there have been much interest in the use of artificial intelligence (AI) platforms to augment the routine endoscopic assessment of the colon to enhance adenoma detection rate (ADR). To date, computer assisted detection of polyps (CADe) have been shown to be safe, with a significant increase in ADR, without any concomitant increase in post-procedural complications. Aims: The investigators aim to evaluate the use of GI GeniusTM Intelligent Endoscopy Module in a multi-ethnic Asian population (Singapore) to increase in ADR and adenoma detected per colonoscopy (ADPC)to justify its effectiveness as an adjunct in polyp detection and training for colonoscopy. Methods: This study will be a single-institution cohort study, conducted over a 2-year period. Sengkang General Hospital (SKH) does an estimated 12,500 colonoscopies per year, with an average of 1,040 colonoscopies performed every month. Thus, given the case volume, the investigators expect to detect differences in ADR amongst endoscopists if any during this study period. As part of the subgroup analysis, the investigators also aim to compare the ADR rates of trainee endoscopists with and without the GI GeniusTM Intelligent Endoscopy Module to ascertain its utility as an education tool/training adjunct

This study aims to evaluate the feasibility and safety of Cold snare polypectomy for removing 5-9mm small intestinal polyps in patients with Peutz-Jeghers Syndrome (PJS),in order to provide some reference for clinical strategy of endoscopic treatment of small intestinal polyps in PJS patients, and may prolong the follow-up period of PJS patients Intervals.

Colorectal cancer is the second most common cancer in Canada. Colonoscopy and removal of precancerous polyps (polypectomy) reduces the incidence and mortality associated with colorectal cancer. However, polypectomy is associated with adverse events. Post-polypectomy bleeding has a significant impact on the life of the patient as it can require hospitalization, transfusions, repeat colonoscopy and rarely death. It is also a substantial cost to the health care system. There currently is no standard of care to prevent bleeding after polypectomy. Tranexamic acid reduces fibrinolysis by slowing down the conversion of plasminogen to plasmin which may prevent bleeding. Although this medication is used extensively for other purposes, it has not been studied before to prevent post-polypectomy bleeding. This pilot study will examine factors involved in the feasibility of conducting a large-scale randomized controlled trial (RCT). This pilot study will include 25 consecutive patients who are treated with tranexamic acid after endoscopic mucosal resection (EMR) of large non-pedunculated colorectal polyps (LNPCP's) to prevent PPDB.

The present trial is aimed at evaluating whether in individuals scheduled for colonoscopy in the framework of a structured FIT (Fecal Immunochemical stool test)-based colorectal cancer screening program, the combination of an AI (artificial intelligence) system (CADEYE) with a mucosal exposure device (G-EYE 760R endoscope) increases the identification of subjects at high risk to develop colorectal cancer (according to recent ESGE-European Society of Gastrointestinal Endoscopy guidelines subjects are labelled as "high-risk" if harboring at least 1 adenoma ≥ 10 mm or with high grade dysplasia, or ≥ 5 adenomas, or any serrated polyp ≥ 10 mm or with dysplasia) when compared to colonoscopy performed with the support of AI only. Individuals fulfilling inclusion criteria are randomized (1:1) to two different arms (Control arm and Interventional arm, see below). Randomization is based on a computer-generated randomized block sequence, stratified according to age (50-61 vs. 62-74) and gender (male vs. female); size of the blocks (10 individuals) is not communicated to the investigator. Allocation is concealed and kept in a sealed envelope, which is opened just before starting colonoscopy. Individuals randomized in the Intervention arm receive colonoscopy examination with G-EYE 760R colonoscopes; once the cecum is reached the balloon is inflated, and the endoscope is withdrawn with the inflated balloon; the colonoscopy is performed with the support of the CADEYE system for polyp detection in both insertion and withdrawal phase; all polyps identified are removed and sent for histopathology examination. Individuals randomized in the Control arm (CADEYE only) receive colonoscopy with G-EYE 760R colonoscope but the balloon remains deflated for the entire procedure; the colonoscopy is performed with the support of the CADEYE system for polyp detection in both insertion and withdrawal phase; all polyps identified are removed and sent for histopathology examination. The main outcome measure is the rate of "high risk" individuals across the two study arms.

This phase I trial tests the safety, side effects, and best dose of Akt/ERK Inhibitor ONC201 (ONC201) in preventing colorectal cancer in patients with familial adenomatous polyposis (FAP) or a history of multiple polyps. ONC201 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

Recent updates of the guidelines on polyp surveillance of the American Society of Gastrointestinal Endoscopy (ASGE) and European Society of Gastrointestinal Endoscopy (ESGE) increasingly focus on size of polyps as an important indicator of malignant transformation to colorectal cancer (CRC). However, the interobserver variability in polyp size assessment between optical diagnosis of endoscopists and pathologists is considerable. This may lead to incorrect surveillance intervals in patients at risk for developing colorectal cancer, which may increase the risk of post-colonoscopy CRC (PCCRC). This study aims to assess the precision of a new laser-based measurement system (AccuMeasure, VTM Technologies Ltd.) for polyps during colonoscopy.

The study involves the planned use of a new microwave-based device during colonoscopy procedures in 50 patients to assess the performance and safety of its use for detection of colorectal polyps and lack of normal clinical practice modification. The device is a final design version, which has been previously tested in several preclinical studies (including phantom studies, an ex vivo study with human tissues, and an in vivo study with porcine model) and in a pilot study in humans (NCT05477836)

A Prospective Study: Longterm Follow Up until S2 (2nd surveillance) at 18 months after EMR for Large Flat/Sessile Colonic Polyps.