There are more than 498,563 clinical trials published worldwide with over 60,000 trials that are currently either recruiting or not yet recruiting. Use our filters on this page to find more information on current clinical trials or past clinical trials (free or paid) for study purposes and read about their results.
Colorectal cancer (CRC) claims 10% of global cancer-related deaths annually, with rising incidence. Locally advanced rectal cancer (LARC) requires improved diagnostic techniques. This study focuses on dual-wavelength quantitative fluorescence molecular endoscopy (qFME) using PD-1/PD-L1-targeted tracers for LARC patients undergoing neoadjuvant treatment. Eighteen patients will receive nivolumab-800CW and durvalumab-680LT before qFME procedures, assessing programmed death-1/programmed death ligand-1 (PD-1/PD-L1) expression. We want to test the feasibility of qFME and ex vivo fluorescence imaging after intravenous administration of nivolumab-800CW, targeting PD-1, and durvalumab-680LT, targeting PD-L1, to visualize PD-L1 and PD-1 expression before and after CRT in LARC patients. If successful, this method can potentially be used in the future to see which patients most likely benefit from additional immunotherapy beforehand. The non-randomized, prospective phase 1 intervention explores biomarkers' role in treatment response prediction. Tracer administration poses minimal risks. Patients will not directly benefit, but the study aims to establish the utility of nivolumab-800CW and durvalumab-680LT in determining PD-1/PD-L1 expression during endoscopy.
In 2017, the World Health Organization placed snakebites at the top of its list of neglected tropical diseases in an effort to facilitate funding for prevention programs, improve access to anti-venom, and stimulate new research in this area. Between 5 and 25 cases per 100 000 inhabitants are reported per year in French Guiana and Martinique. Before the era of anti-venom immunotherapy, envenomations by Bothrops snake bites in French Guiana and Martinique could quickly become life-threatening with a mortality rate close to 30%. Today, the administration of fragments of Fab or (Fab')2 immunoglobulins gives anti-venoms an excellent capacity to neutralise venom toxins, which has reduced mortality to less than 1% in the case of early hospital treatment In French Guiana, envenomation by Bothrops bites is characterized by local signs such as intense pain, rapidly expanding oedema, haemorrhagic phlyctenes and sometimes muscle necrosis. The local inflammatory and haemorrhagic damage is related to the enzymatic activities of the toxins contained in the venom (metallo-proteinases, disintegrins, and phospholipases A2, in particular). At the systemic level, venom serine proteases and metalloproteinases activate the coagulation cascade by multiple mechanisms (activation of coagulation factors X and V and of protrombin, thrombin-like and fibrinogenolytic enzymatic properties) and are responsible for the collapse of coagulation factors making the blood incoagulable. The metalloproteinases "hemorrhagins" destroy the vessel wall and are the cause of locoregional and systemic hemorrhage. Envenomations by bites of Bothrops lanceolatus in Martinique have particular characteristics. Despite the genetic similarity with their congeners in French Guiana, envenomation by bites of Bothrops lanceolatus is characterized by the development of very intense local inflammatory signs (little haemorrhage) and the occurrence of thrombotic complications such as cerebral, pulmonary or myocardial infarction. The mechanisms behind this thrombotic presentation are not known. The large amount of metalloproteinases in the composition of Bothrops lanceolatus venom is believed to be responsible for destruction of vascular endothelium and pro-thrombotic state. Bothrops lanceolatus bite envenomations have been reported to be frequently complicated by generalized infections, disseminated intravascular coagulation and the occurrence of multi-visceral failure syndrome. This observation suggests abnormalities in endothelial function in which changes in Willebrand factor expression have been implicated. The investigators hypothesize that plasma Willebrand factor (VW) activity and the intensity of endothelial activation are different depending on the Bothrops snake species involved in the bites in Guyana and Martinique. Due to the specific properties of the venoms of each Bothrops species, the activity of the Willebrand factor (VW) and the consequences in terms of endothelial activation would be different and responsible for the clinico-biological characteristics according to the geographical origin of the snakes. The investigators will demonstrate that the accumulation of Willebrand factor (VW) and the increase in its activity are responsible for the endothelial activation and micro-thrombosis observed during envenomations by Bothrops lanceolatus bites, whereas the decrease in its activity induced by the venoms of endemic Bothrops from Guyana is responsible for haemorrhagic phenomena. This study will highlight the importance of changes in Willebrand factor activity on endothelial activation and the initiation of micro-thrombosis in the case of Bothrops lanceolatus envenomations and on primary haemostasis and bleeding disorders in the case of endemic Bothrops in Guyana. This new knowledge is important insofar as individualised therapeutic management can be proposed. Indeed, several studies have shown that adjuvant treatment of thrombotic microangiopathies, such as thrombotic thrombocytopenic purpura, with blood products (fresh frozen plasma) or plasma exchange, improves endothelial dysfunction and the prognosis of patients.
The main objective of this prospective study is to assess the clinical outcomes of platinum based chemotherapy cases either cisplatin or carboplatin according to BRCA status in neoadjuvant and recurrent ovarian cancer.
Atrophic gastritis where the cells of the stomach lining change is the single most important precursor condition for gastric cancer. Helicobacter pylori a bacteria which causes infection in the stomach is the most important causative agent of inflammation of the stomach, and subsequent atrophic gastritis. The difficulty with diagnosing patients with gastric cancer is that a lot of patients will suffer from heartburn and pain around the stomach, but very few of those will have gastric cancer. This makes it difficult for GPs to know who to refer for further testing as the current cancer referral criteria are very broad. To reduce the need for invasive diagnostic methods such as endoscopy where a flexible tube with camera is inserted into the gullet and stomach via the mouth, a commercially available blood test (GastroPanel ®) designed to measure the levels of certain key stomach hormones to detect atrophic gastritis has been developed. It is extremely rare for gastric cancer to develop without there first being gastric atrophy. A real word study is needed assess the performance of this blood test in a group of patients referred via an urgent cancer pathway for endoscopy in the UK. Scoring systems have been created to help us triage referrals to endoscopy in those with difficulty swallowing, but no similar score is available for those presenting with other upper abdominal symptoms. By using this blood test as well as collecting patient information we hope to create an improved referral criteria for those needing investigation for gastric cancer.
The treatment of anorexia nervosa often proves to be difficult. There are no drugs that work specifically for the treatment of anorexia nervosa. Experimental administration of metreleptin (synthetically produced leptin) to patients with anorexia nervosa has produced positive results. This study tests the effect of metreleptin in comparison with placebo, which could potentially make treatment easier. The aim of the study is to investigate whether treatment with metreleptin can help to reduce the symptoms of anorexia nervosa and improve mood and weight.
Toxoplasmosis is a common infection whose clinical severity can sometimes justify admission to intensive care, especially in immunocompromised patients. This study should make it possible to evaluate the impact of different anti-infective treatment regimens and to highlight clinical-biological and prognostic differences depending on the type of underlying immunosuppression.
Chronic pain (CP) is a leading cause of medical disability, healthcare expenditure, and reduced psychological well-being. Given the limited mobility, travel burden, and cost, access to care can be problematic for patients suffering from this disease, driving the recent shift toward care through telehealth programs. Given the complex interrelationship of physical and psychosocial aspects related to chronic pain, in this project the investigators propose to validate and investigate the effectiveness of new integrated health interventions by combining the technique of transcranial direct current stimulation (tDCS), complementary therapies and telemonitoring. The investigators hypothesize that this novel combined approach will provide a more effective strategy to overcome the classic barriers of pharmacological treatments and access to healthcare due to lack of mobility. To do this, the investigators will rely on a previously developed integrated platform that enables effective delivery of non-pharmacological interventions and outcome assessment. Many patients do not benefit from pharmacological and invasive treatments, leading to the development of alternative therapeutic options such as non-invasive brain stimulation (e.g. tDCS) and complementary interventions to improve physical and psychological well-being. These complementary interventions reduced pain intensity and psychological distress by improving individuals' ability to manage and cope with their pain. However, due to the multiple co-occurring factors associated with chronic pain, a multidisciplinary and integrated treatment approach is challenging. Technology ecosystems can be a reliable tool to achieve such a diverse personalized approach and evaluate their results. In a previous project, the investigators developed PainRE-Life, a dynamic and integrated technology ecosystem to enable continuity of care for CP patients, including personalized applications, training tools and telemonitoring tools for outcome assessment.
Idiopathic inflammatory myositis (IIM), also known as myositis, are a heterogeneous group of diseases characterized by chronic inflammation of striated muscles and skin, with different clinical manifestations, treatment responses, and prognosis. This project will build a clinical follow-up cohort for idiopathic inflammatory myositis (IIM) centered on Renji Hospital, Shanghai Jiao Tong University School of Medicine, to promote the clinical and pathogenesis of this group of diseases.
Bioprosthetic valves are usually made of biological tissue that are mounted to a frame and are designed to function similarly to a healthy natural valve. Edwards Magna Ease and Intuity Elite bioprosthetic valves have similar leaflets and mounting designs. However, the valves are implanted in the patient in different ways (one is stitched to the wall of the left ventricular outflow tract, and the other is held in place by the radial force of the valve skirt). The study aims to understand in more detail how the different valves interact with the left ventricular outflow tract and aortic root.
The aim of this study was to investigate the effect of using amigurumi octopus on the pain and comfort of the newborn in premature infants undergoing endotracheal aspiration. It is a randomized controlled quasi-experimental design. The study will be conducted in the neonatal intensive care unit of Health Sciences University Bursa High Specialization Training and Research Hospital. The population of the study will consist of preterm hospitalized in the neonatal intensive care unit during the period of the conducted study. In the calculation of the sample size, the power level is 80% and the significance level is 5%. It was determined by the statistical expert that the number of babies that should be included for each group is 26 and the total number of babies required for the whole study is 52 when the effect size is determined as 0.8 for the investigation of the difference between the experimental and control groups in terms of the premature infant pain profile (PIPP) variable. Based on aforementioned information, the study sample was determined as 80 preterm infants in which 40 for experimental groups and 40 for control groups. Block randomization method will be applied for the randomization of the groups. PIPP=Premature Infant Pain Scale and Premature Infant Comfort Scale (PBIQ) will be used as a case report form for the collection of the study data. All the patients included in the study will be intervened by the nurse having a neonatal nursing experience by paying attention to aseptic conditions in accordance with the routine aspiration criteria of the unit. Standardization will be ensured by intervening in all patients with the same application by the same nurse. During the endotracheal aspiration procedure, the octopus will be given to experimental group 10 minutes before the procedure. Babies will be allowed to touch the octopus for 10 minutes during and after the procedure. Physiologic parameters of the infants before, during and after the procedure will be reported and recorded by camera. According to the video recordings, PIPP-R and PICS scale evaluations of the infants will be made by two research nurses other than the main researcher conducting the study. The routine aspiration application steps of the unit will be applied to the control group without any intervention.