View clinical trials related to Polyps.
Filter by:This study aims to develop a highly sensitive, specific, and cost-effective blood assay for early detection of colorectal adenomas and cancer, using advanced machine learning and state-of-the-art biological analyses.
The aim of the clinical trial is to investigate whether the use of a new multichannel endoscopic transanal access device (named UNI-VEC) is safe and effective in the resection of a rectal polyp or tumor that sits in the distal part of the colon (up to about 20 cm from the anal margin). This is the first study to test the device in humans, after proving its good performance in preclinical development (preclinical development has included functional laboratory tests and an animal trial).
The goal of this study is to learn about the epigenetic and genetic regulation (microRNA/mRNA) of colorectal polyps and their evolvement as polyps and to colorectal cancer. Furthermore, the study aims at investigating whether certain epigenetic features, linked to polyps and/or cancer are traceable in blood samples. The main questions the study aims to answer are: 1. Are there specific microRNA/mRNA that are expressed in different types of polyps and cancers and their respective stages? 2. Is microRNA/mRNA expression in polyps and cancer traceable in blood from the same patient? 3. Is the intestinal microbiata correlated with colorectal polyps and cancer and their microRNA/mRNA expression? Type of study: clinical trial Participant population Participants consist of patients undergoing a scheduled colonoscopy where a polyp or cancer is discovered. Healthy controls, with normal colonoscopy findings will be enrolled. Biopsies will be obtained from polyps/cancers and from normal surrounding intestinal mucosa. Biopsies will be obtained from defined intestinal locations from healthy controls. Blood samples will be collected from all participants. Researchers will compare microRNA/mRNA and microbiota in patients with polyps/cancers and their respective stages as well as healthy controls. Comparisons include biopsies and blood samples.
OBJECTIVES The aim of the study is to compare the efficacy of cold snare EMR versus hot snare EMR for non-pedunculated polyps 10-20mm in size with respect to complete resection rates and adverse events. DESIGN : A Randomised interventional study. Sample size: 330
The primary purpose of this study is to assess the effect of verekitug (UPB-101) on the endoscopically determined size and extend of nasal polyps in participants with chronic rhinosinusitis with nasal polyps (CRSwNP) and to assess the safety and tolerability of verekitug (UPB-101) compared to placebo.
During this project, the investigators want to explore in vitro changes in basal cells and the crosstalk with residing immune cells as potential pathogenic mechanisms in CRSwNP vs healthy controls by using surgically resected patient samples.
Endoscopic resection of pedicled polyps mainly focuses on how to prevent bleeding, and also needs to pay attention to the convenience of resection and the integrity of resection, which means that different endoscopic resection strategies should be adopted for pedicled polyps with different pedicle sizes. Small pedicled polyps with heads smaller than 20mm and pedicles smaller than 5mm are defined as having a relatively small risk of bleeding. Preliminary studies in recent years suggest that the use of cold snare polypectomy for small pedicled polyps may also be a safe resection strategy. However, for small pedicled polyps, ASGE and ESGE guidelines currently recommend hot snare polypectomy in the middle and lower pedicles (evidence level medium). Therefore, the provision of high-quality clinical evidence related to cold resection techniques in the resection strategy of small pedicled polyps may provide a basis for revision of guidelines.
Endoscopic resection of pedicled polyps mainly focuses on how to prevent bleeding, and also needs to pay attention to the convenience of resection and the integrity of resection, which means that different endoscopic resection strategies should be adopted for pedicled polyps with different pedicle sizes. The head larger than 20mm or pedicle larger than 5mm are defined as large pedicle polyps, which are at greater risk of bleeding. Current guidelines recommend hot removal by snare following preoperative saline injection, ligation of the pedicle with a nylon ring or metal clip, depending on the size of the polyp head and pedicle. However, the use of snares and metal clamps does not appear to reduce delayed postoperative bleeding, and the technical requirements of nylon ligation are relatively high. Recent studies have found that Underwater endoscopic mucosal resection (UEMR) is also safe and effective for the treatment of large and medium colorectal stemless polyps. Therefore, it is still necessary to further explore new safe and effective endoscopic resection strategies and techniques.
Safety and effectiveness of a new hemostatic system to prevent delayed bleeding after endoscopic resection in a selected high-risk population (NEXPOWDER- ENDOHS). Indication: Patients with indication of endoscopy resection by endoscopic mucal resection (EMR) or endoscopic submucosal dissection (ESD) with high risk of delayed bleeding (≥5%). Hypotheses: The use of NexpowderTM after upper and lower gastrointestinal ESD or EMR of ≥20mm in high-risk population will prevent and decrease delayed bleeding to less than 5%.
Purpose & Research Questions The purpose of this study is to evaluate whether artificial intelligence (AI) improves the detection of polyps and whether the system can classify the type and severity of detected changes. The investigators will also assess if there are any differences between the various AI systems and whether the polyps that may be missed are benign or malignant.