Clinical trials

Every week in the UK, 12 apparently healthy and fit individuals under the age of 35 die suddenly, a tragic event known as sudden cardiac death (SCD). The investigators have shown that heritable cardiac disorders affect the distribution of proteins at the cardiac cell-cell junctions, the areas where cardiac cells are mechanically and electrically coupled. This knowledge has helped the investigators diagnose specific heart disorders in individuals thus reducing the risk and incidence of SCD. Yet, the primary material required is a heart sample. A heart biopsy is an invasive process that comes with risks and is not performed unless absolutely necessary. And it is impossible to obtain a heart sample from an individual that may be carrying a disease-causing mutation (and hence be at risk of SCD) but does not yet show evidence of disease manifestation. The investigators recently showed that buccal cells show changes in protein distribution equivalent to those exhibited by the heart,hence providing them with a surrogate tissue for the myocardium. The investigators aim to use buccal smears as a means to identify those at risk of SCD. Patients regularly seen at the cardiology clinics at St. George's Hospital can participate in the study. The investigators shall take a buccal smear simply by rubbing a soft brush at the inside of their cheek and smearing it on a slide. Most individuals willing to participate in the study will only have to provide the investigators with a sample once. However, in selected cases (for instance, if the patients show disease progression or have a change in medication) they may be asked to provide the investigators with a subsequent sample during one of their scheduled follow-up visits. The process takes only a few seconds, is totally risk- and pain-free and it is anticipated to have great implications in diagnosis and patient management.

A randomised controlled trial to assess the efficacy of staged hybrid ablation when compared with standard catheter ablation in patients with non-paroxysmal atrial fibrillation (AF) and Heart Failure

Study Title: Digital Diet and Exercise Intervention to Reduce Liver Fibrosis in Metabolic Dysfunction-associated Steatotic Liver Disease (MASLD): A Randomized Controlled Trial (D-FIB-MASLD) Objective: This study aims to assess whether a digital application called Gro Health can help patients with MASLD and significant liver fibrosis reduce their liver stiffness. Liver stiffness is a measure of liver health and fibrosis. The study will also investigate the impact of this intervention on weight, body measurements, liver health markers, and overall quality of life. Background: MASLD is a liver condition linked to metabolic issues such as obesity and diabetes. It is a common cause of liver-related complications and can lead to severe liver damage. Lifestyle changes, like improved diet and exercise, are key to managing MASLD, but achieving these changes can be challenging for many patients. Digital tools like the Gro Health app may provide personalized and accessible support to improve outcomes. Study Design: This is a randomized controlled trial involving 100 participants with MASLD and significant fibrosis. Participants will be assigned to either the intervention group (using the Gro Health app) or a control group (receiving standard care). The study will take place at a single site over 12 months. Intervention: Participants in the intervention group will use the Gro Health app, which offers personalized calorie and activity goals, a food diary, over 1,000 Mediterranean diet recipes, and educational resources. They will also receive a smartwatch to track steps and physical activity. The app includes a feature allowing researchers to monitor participants' engagement and provide encouragement. Eligibility: Adults aged 18 or older with a diagnosis of MASLD and a liver stiffness measurement of 8 kPa or higher are eligible. Key exclusions include alcohol consumption over 14 units/week, a BMI over 40, or certain other liver diseases or medications. Outcomes: The primary outcome is a reduction in liver stiffness after six months. Secondary outcomes include changes in weight, BMI, body fat percentage, liver enzymes, cholesterol, and quality of life. Additional data on app usage, physical activity, and dietary habits will also be collected for the intervention group. Potential Impact: If successful, this study will provide evidence that digital tools can help improve liver health and overall well-being in patients with MASLD, offering a scalable solution for healthcare systems.