View clinical trials related to Polyps.
Filter by:The investigators aim to investigate two major so far unresolved topics in CRSwNP research: (1) Thorough functional and molecular characterisation of barrier function in patients suffering from CRSsNP and CRSwNP and (2) effect of dupilumab treatment on barrier function in polyp patients. This will be achieved in patient-derived samples by employing measurement of barrier function in primary cell cultures in combination with a mass cytometry based imaging approach, transcriptomic analysis as well as cytokine and microbiome data of individual patients.
Nasal sinus polyposis is a chronic inflammatory pathology of the nasal cavity and sinus cavities that causes bilateral and multifocal polyp development and has a prevalence of 2 to 4% in the general population. Therapeutic management consists of first-line medical treatment for anti-inflammatory purposes. Local corticosteroid therapy, using nasal sprays, is the background treatment. Surgical management is offered to patients in case of failure of medical treatment. Although effective, surgery does not protect patients from recurrence of symptoms related to regrowth of polyps. Recently, biologics have appeared, which despite its effectiveness, about 20% of patients have a partial or no response to these treatments. There is currently no possibility of determining the probability of response to treatments in patients. It is therefore essential to determine an anatomo-clinico-biological correlation associating the anatomopathological profile, the clinical characteristics and the cytokine signature in order to best guide the patient's management, including the initiation of biotherapy. Indeed, patients, according to their clinical, biological characteristics and the cytokine signature of their polyps will react differently to different treatments, including surgery and biotherapy. This correlation will serve as a predictor of treatment response.
The main purpose of this study is to evaluate the efficacy and safety of lebrikizumab in adult participants with chronic rhinosinusitis and nasal polyps treated with intranasal corticosteroids. The study will last about 18 months.
The goal of this observational study is to learn about the role of electroporation (the use of small electric pulses applied to tissue) in the treatment (ablation) of colorectal polyps. The main questions to answer in this pilot phase of the study are: 1. The safety of pulsed field ablation (PFA) for the removal of colorectal polyps 2. The efficacy and feasibility of PFA in the treatment of colorectal polyps using metrics such as treatment coverage, treatment time, post treatment fibrosis, post treatment recurrence and patient satisfaction
There are currently no studies evaluating the association between diet and the incidence of endometrial polyps. We aim to evaluate the association to provide more recommendations for the early prevention of endometrial polyps.
The goal of this observational study is to learn about the impact of ursodeoxycholic acid treatment on the gallbladder polyp evolution in patients with gallbladder polyps that undergo follow up. The main question it aims to answer is: • Whether ursodeoxycholic acid could decrease the gallbladder polyp size and therefore spare unnecessary follow up or surgical interventions Participants will be managed according to the standard practice of the department they are attended: - According to the established practice in the Department of Surgery, patients that either do not have an indication for cholecystectomy or decline the offered intervention, and are subjects for a follow up, are usually prescribed Ursodeoxycholic Acid, at 10-15 mg/kg/day for at least 6 months. - According to the standard practice of Gastroenterology Department, patients are followed up according to the published guidelines. Researchers will compare the groups that receive or not ursodeoxycolic acid treatment to see if the polyp size evolution differs significantly.
Large (≥20mm) colorectal polyps often harbor areas of advanced neoplasia, making them immediate colorectal cancer (CRC) precursors. Such polyps have to be completely removed to prevent CRC and to avoid surgery and/or adjuvant therapy. The laterally spreading lesions (LSLs) are removed via endoscopic mucosal resection (EMR). However, recurrence is common. Recent studies have found that the use of hybrid argon plasma coagulation (h-APC) for the ablation of the margin and base of resection post-EMR could significantly reduce the recurrence rate, and complete closure of the post-EMR defect can prevent other adverse pre- and post-procedure outcomes such as bleeding. We hypothesize that performing hybrid argon plasma coagulation (h-APC) margin and base ablation post-EMR for large (≥20mm) colorectal LSLs will demonstrate a lower recurrence rate compared to Snare Tip Soft Coagulation (STSC) margin ablation. We also hypothesize that performing complete closure of the EMR defect will result in lower rates of adverse events compared to cases where no defect closure is performed.
Nasal microorganisms, exfoliated cells, nasal secretions, fetal microorganisms and blood were collected from patients with chronic sinusitis with nasal polyps before medication. Nasal polyp tissues of the patients were clamped for pathologic biopsy in the outpatient clinic. Methylprednisolone was then administered to the patients for 17 days, and the nasal microbial changes were observed after the administration of the drug. Patients underwent surgical treatment after the administration of the drug, and postoperative patients were followed up for a long period of time until polyp recurrence. During the follow-up, the microorganisms in the patients' postoperative nasal cavities were collected and the postoperative microbial changes were recorded
While it is known that Dupilumab has profound effects in patients with CRSwNP, these are often seen months later after treatment initiation; however, in practice, patients often endorse feeling significantly better within days of their first injection. No studies have investigated the molecular basis for such an acute change. This study proposes that specific cytokine changes in phenotype in addition to microbiome and oscillometry effects play a synergistic role in producing this effect.
This is an open-label, single-arm, multicenter, extension study to evaluate the long-term safety and efficacy of GR1802 injection in patients with Chronic Rhinosinusitis With Nasal Polyps