There are about 2700 clinical studies being (or have been) conducted in Bulgaria. The country of the clinical trial is determined by the location of where the clinical research is being studied. Most studies are often held in multiple locations & countries.
This study is done to find out whether the medicine, semaglutide, has a positive effect on early Alzheimer's disease. Participants will either get semaglutide or placebo (a "dummy" medicine which does not contain any study medicine) - which treatment participants get is decided by an equal chance. The study will last for up to 173 weeks (about 3 years and 4 months). Participants will have 17 clinic visits and 1 phone call with the study doctor. The study includes various tests and scans. At 10 of the clinic visits participants will have blood samples taken. Participants must have a study partner, who is willing to take part in the study. Women cannot take part if pregnant, breastfeeding or plan to become pregnant during the study period. A cerebrospinal fluid (CSF) sub-study will be performed as a part of the study. The sub-study will be performed on a selection of sites based on their experience with CSF sampling and willingness to participate in this sub-study. The endpoints related to this sub-study are exploratory only.
This main long-term extension study is designed to evaluate the long-term safety and tolerability of faricimab 6 milligrams (mg) administered by intravitreal injection at a personalized treatment interval (PTI) to participants with neovascular age-related macular degeneration (nAMD) who enrolled in and completed one of the Phase III studies: GR40306 (NCT03823287) or GR40844 (NCT03823300), also referred to as the parent studies. Eligible patients who consent to participate in this main study will be enrolled upon completion of the end-of-study visit in the parent study. Additionally, there is a substudy that is being conducted. The aim of this substudy is to evaluate the impact of intravitreal faricimab on the health of the corneal endothelial cells in the study eyes of patients with nAMD to fulfill a U.S. Food and Drug Administration (FDA) post-marketing requirement. The fellow eyes of the same enrolled participants in the substudy will serve as the controls.
Study to determine the safety and tolerability profile of durvalumab with platinum (cisplatin or carboplatin) plus etoposide (EP) as first-line treatment in participants with extensive-stage small-cell lung cancer.
This is a Phase III, open-label, multicenter, randomized, two-arm study designed to evaluate the efficacy and safety of atezolizumab plus either lenvatinib or sorafenib versus lenvatinib or sorafenib alone in participants with locally advanced or metastatic Hepatocellular Carcinoma (HCC) who have progressed on prior systemic treatment with atezolizumab plus bevacizumab combination.
The primary purpose of this study is to compare the effect of mitapivat versus placebo on transfusion burden in participants with transfusion-dependent alpha- or beta-thalassemia (TDT).
The primary purpose of this study is to compare the effect of mitapivat versus placebo on anemia in participants with alpha- or beta-non-transfusion dependent thalassemia (NTDT).
This study compares insulin icodec (a new insulin taken once a week) to insulin degludec (an insulin taken once daily which is already available on the market) in people with type 2 diabetes. The study will look at how well insulin icodec taken weekly controls blood sugar compared to insulin degludec taken daily. Participants will either get insulin icodec that participants will have to inject once a week on the same day of the week or insulin degludec that participants will have to inject once a day at the same time every day. Which treatment participants get is decided by chance. The insulin is injected with a needle in a skin fold in the thigh, upper arm or stomach. The study will last for about 8 months. Participants will have 17 clinic visits and 13 phone calls with the study doctor. At 8 clinic visits participants will have blood samples taken. At 4 clinic visits participants cannot eat or drink (except for water) for 8 hours before the visit. Participants will be asked to wear a sensor that measures their blood sugar all the time in 3 periods for a total of 13 weeks (about 3 months) during the study. Women cannot take part if pregnant, breast-feeding or plan to become pregnant during the study period.
This study aims to characterize the clinical management and outcomes of participants diagnosed with anaplastic lymphoma kinase (ALK)-positive advanced non-small cell lung cancer (NSCLC) who are being treated with alectinib in real-world clinical practice.
This study is a multi-center, single arm, open label, retrospective and prospective clinical data collection of CascadeTM, Non-Occlusive Remodeling Net, in adults with intracranial aneurysms, demonstrating the effectiveness and safety of the CascadeTM in providing temporary assistance for coil embolization of intracranial aneurysms. All consecutive eligible patients from all participating sites will be included in this clinical data collection. The relevant data of the coil embolization procedure will be collected via an eCRF system. Peri procedural data on the coil embolization procedure as well as discharge, 30 days and at 3-6 months status will be collected.
The purpose of this study is to evaluate the safety and efficacy of long-term administration of flexible doses of tavapadon in participants with Parkinson's Disease.