View clinical trials related to Marfan Syndrome.
Filter by:The aim of this retrospective single center study was to evaluate the clinical utility of histological and immunohistochemical analyses of specimens obtained by endoscopic ultrasound-guided fine needle aspiration (EUS-FNA).
The National Registry of Genetically Triggered Thoracic Aortic Aneurysms and Cardiovascular Conditions (GenTAC) was initiated in 2006 by the National Heart, Lung, and Blood Institute (NHLBI) and the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS). GenTAC established a registry of 3706 patients with genetic conditions that may be related to thoracic aortic aneurysms and collected medical data and biologic samples. The study ended in September 2016. Data and samples are available from NHLBI and requests should be made to BioLINCC. See the NHLBI website for more information: https://www.nhlbi.nih.gov/research/resources/gentac/.
The investigators are looking at the different impacts of atenolol, verapamil and perindopril on large artery and lv function in marfan syndrome. It is a double-blind, randomised cross-over trial.
To study the effect of losartan (an angiotensin receptor blocker-ARB) on aortic root growth in patients with Marfan syndrome, already treated with beta-blockers (BB). The effect of losartan will be compared to placebo. Losartan or placebo will be added to the treatment regimen in a two-step up-titration scheme over 2 weeks. Start doses of Losartan will be 25 mg for subjects under 50kg of weight and 50mg if the weight is over 50kg. Uptitration will be guided by the tolerance of the drug by the patients. Patients will be contacted by phone call for assessment of side-effects before second step of uptitration. Daily maximal doses of Losartan will be 50mg for subjects under 50kg of weight and 100mg if the weight is over 50kg
Marfan syndrome is an inherited connective tissue disorder with morbidity and mortality from aortic dilation and dissection. The degree of aortic dilation and response to beta-blockade (standard of care) vary in adults with Marfan syndrome. However, aortic stiffness is often present, and can be a predictor of aortic dilation and cardiovascular complications. In addition, adults with Marfan syndrome develop left ventricular diastolic dysfunction, which can progress to heart failure. Aortic stiffness and diastolic dysfunction are important and logical therapeutic targets in adults with Marfan syndrome. TGF-beta mediates disease pathogenesis in Marfan syndrome and contributes to aortic stiffness. The angiotensin receptor blocker, losartan, inhibits TGF-beta activity and reverses aortic wall pathology in a Marfan mouse model. Losartan also decreases aortic stiffness and improves diastolic function in hypertension, renal disease and hypertrophic cardiomyopathy. This trial is a randomized, double-blind trial of 50 adults with Marfan syndrome, treated with 6 months of atenolol vs. losartan. Arterial tonometry for aortic stiffness and echocardiography for diastolic function will be performed at the beginning and end of treatment. A blood draw for serum markers of extracellular matrix turnover and inflammation will also be performed at 0 and 6 months. We plan to determine whether losartan decreases aortic stiffness and left ventricular diastolic dysfunction significantly more than atenolol.
Marfan syndrome is a genetic disease of our connective tissue, which provides material and support for our skeleton, muscles, blood vessels and other parts of our bodies. People with Marfan syndrome may be tall and thin with slender, tapering fingers, long arms and legs, and spine curvature. They often have heart and eye problems. In some patients, the condition is very mild and the person has few or no symptoms. Others are always at risk of life-threatening problems, which usually involve damage to the valves in the heart or weakening of the large blood vessels leading from the heart. If the blood vessels become weak, they can balloon out (dilate) and break (rupture), which might cause the person to die suddenly. We have only a limited ability to stop the progression of disease in Marfan syndrome. Typically we use medicines that lower heart rate or blood pressure (or both). But this does not prevent the disease and very few drugs work well enough to keep patients from needing surgery or dying suddenly because a blood vessel has torn open. Our objective is to study two medicines to see if one, or both, can improve blood vessel function in patients with Marfan syndrome. One (Atenolol) belongs to a group of drugs called beta blockers and is often used to treat high blood pressure. It is the most common drug that is currently used to treat patients with Marfan syndrome. The other (Losartan) is also used for high blood pressure, but works in a different way. This study will help us to find better ways to treat people who have Marfan syndrome and to identify early changes in blood vessel function that may help to prevent long-term complications.
The research purpose is to determine if thymus transplantation with immunosuppression is a safe and effective treatment for complete DiGeorge anomaly. The research includes studies to evaluate whether thymus transplantation results in complete DiGeorge anomaly subjects developing a normal immune system.
The study purpose is to determine if cultured thymus tissue implantation (CTTI) (previously described as transplantation) with tailored immunosuppression based on the recipient's pre-implantation T cell population is a safe and effective treatment for complete DiGeorge anomaly. This study will also evaluate whether cultured thymus tissue implantation and parathyroid transplantation with immunosuppression is a safe and effective treatment for complete DiGeorge anomaly and hypoparathyroidism.
One purpose of this study is to determine whether the amount of cultured thymus tissue implanted into DiGeorge anomaly infants has any effect on the immune outcome. Another purpose of this study is to determine whether parental parathyroid transplantation (in addition to cultured thymus tissue implantation (CTTI) can help both the immune and the calcium problems in DiGeorge infants with hypocalcemia. [Funding Source - FDA Office of Orphan Products Development (OOPD)]
The study purpose is to determine whether cultured thymus tissue implantation (CTTI) is effective in treating typical complete DiGeorge syndrome.