All clinical trials

Paroxysmal nocturnal hemoglobinuria (PNH) is a hematopoietic stem cell disorder in which unregulated activation of the complement system leads to significant ischemic morbidities with shortened lifespan. Life-threatening thromboembolism (TE) is the most feared complication of PNH, accounting for up to 45% of patient deaths. It is estimated that 40% of PNH patients experience a clinically evident TE and 60% of patients without clinically diagnosed TE demonstrate TE by high-sensitivity MRI, indicating the ongoing thrombotic risk in most patients with PNH. Much of these data come from PNH patients from European descent. To understand the impact of TE in patients with PNH from non-European regions, we performed this study to evaluate the clinical characteristics of Korean patients with PNH.

Graves' disease is characterized by thyrotoxicosis, goiter, ophthalmopathy and dermopathy. Pathogenesis involves autoimmune process. The investigators think temperatures of the area involved in the inflammation may change. Thus the investigators plan to take temperature pictures of Graves' patients using digital infrared thermal imaging system and observe the change.

Adolescents suffering of ADHD may have impaired driving performance. The investigators would like to check the differences in driving performance in young adults(aged: 15-18 years) with ADHD by driving simulator and seat pressure mapping with and without methylphenidate medication.

The incidence of pin site infection is related to the nursing management of external fixation.

The Breast Cancer Registry aims to collect clinical data of all breast cancer patients diagnosed and/or treated in the National University Hospital, with the goal of understanding risk factors, presenting symptoms, diagnosis, treatment, and outcome data of breast cancer in Singapore. This information will contribute to improving management of breast cancer patients.

The purpose of this study is to compare the incidence rates of infection, malignancy and death among patients with rheumatoid arthritis who are treated with abatacept and those who are treated with other anti-rheumatic medications for rheumatoid arthritis.

In the United States, African Americans are 3.6 time and Hispanics 1.5 times more likely to suffer from chronic kidney disease and need dialysis treatment for life, when compared to the non-Hispanic Whites. Unfortunately many dialysis patients die, so that after 5 years only less than 35% are still alive. Dialysis patients who appear malnourished or who have muscle and fat wasting are even more likely to die. Interestingly, among dialysis patients, minorities (African Americans, Hispanics and Asian Americans) usually survive longer than the non-Hispanic Whites. If the investigators can discover the reasons for these so-called "racial survival disparities" of dialysis patients, the investigators may be able to improve survival for all dialysis patients and maybe even for many other people who suffer from other chronic diseases. During this 5 year study the investigators would like to test if a different nutrition and diet can explain better survival of minority dialysis patients. The investigators will also test if in additional to nutrition there are 2 other reasons for better survival of minority dialysis patients, namely differences in bone and minerals and differences in social and psychological and mental health. The investigators plan to study 450 hemodialysis patients every 6 months in several dialysis clinics in Los Angeles South Bay area. These subjects will include 30% African Americans, 30% Hispanics, 30% non-Hispanic Whites and 10% Asians. Every 6 months the investigators will examine their nutritional conditions, dietary intake, psycho-social conditions and quality of life, and will recruit 75 new subjects to replace those who left our study as a result of kidney transplantation, death or other reasons. Hence, the investigators estimate studying a total of 1,050 hemodialysis patients over 5 years. Clinical events such as hospital admissions and survival will be followed. Blood samples will be obtained every 6 months for measurements of hormones and "biomarkers", and the remainder of the blood will be stored in freezers for future measurements. The investigators plan to design and develop race and ethnicity specific nutritional risk scores and food questionnaires and will test some of these scores in larger national databases of hemodialysis patients. Almost a year after the study starts, the investigators also plan to do additional tests of body composition and dietary intake in a smaller group of these patients at the GCRC.

Introduction. The cardiovascular diseases, at the origin of 4 deaths out of 10, remain the leading cause of mortality in Europe. According to WHO, this tendency will spread in 2020 on a worldwide scale. These pathologies are avoidable on the whole by the adoption of healthy lifestyles. To prevent occurred of the cardiovascular affections is, more than ever, a major goal of Public health. The transborder "Great Area", localised zone in the middle of Europe between the very high cardiovascular risks of the North and the weaker risks of the South, constitutes a zone privileged for the action against the cardiovascular diseases. However, there to date does not exist any joint action in this geographical area. The Public Research centre of the Health of the Grand-Duchy of Luxembourg, the School of Public health of the University of Liege, the Clinical Center of Investigation of the University hospital of Nancy and the University hospital of the Saar wish to be linked and mutualiser their means available and their complementary competences in order to evaluate and to act on the cardiovascular health of the citizens of the "Great Area". Over one 3 years period the Nutrition project, Environment and Cardiovascular Health (NESCAV) aims at creating on the level of the Great Area a transborder alliance of prevention and promotion of cardiovascular health. This great multicentric transverse investigation and poly-set of themes will make it possible to collect relevant data on cardiovascular health of the population of the Great area. Objective of this biomedical research project: It is about multicentric, transverse a Européenne epidemiological study aiming, through biological questionnaires and analyses, to collect information on the cardiovascular risk factors within the Great Area.

The purpose of this observational, exploratory study in patients undergoing any cardiac valve replacement or repair is to assess the rate of bacterial colonization over native degenerative calcified cardiac valves.

The investigator will evaluate the clinical outcomes of the patients in whom the treatment strategy for their coronary stenosis were determined by fractional flow reserve measurement.