Active clinical trials for "Turner Syndrome"

The study aim is: To examine aortic tissue by light microscopy To examine aortic tissue by electron microscopy To study changes in the epigenome and transcriptome of the X chromosome specific to aortic tissue. To examine aortic tissue using biochemistry including proteomics. To establish the karyotype of fibroblasts with standard chromosome examination on 10 meta-phases as well as by fluorescent in situ hybridization (FISH) with probes covering the X and Y chromosome. Using the latter 200 meta-phases will be examined. 30 controls who did not die from aortic dissection or dilation will be recruited from The Department of Forensic Medicine at Aarhus University Hospital. The investigators will subject samples of aortic tissue from women undergoing prophylactic aortic surgery due to either Marfan syndrome or bicuspid aortic valve to the same panel of examinations (except karyotyping). Lastly the investigators will compare the results from the three groups (Turner syndrome, Marfan syndrome and Bicuspid aortic valve).

This is a prospective, multi-center observational study designed to compare the test results of the Verinata Health Prenatal Aneuploidy Test to results of conventional prenatal screening for fetal chromosome abnormalities in 'all-risk' pregnancies.

Primary objective is to assess the relationship between changes from serum biomarkers observed after 1 month of Saizen® therapy and change in height, weight after up to 5 years of treatment with Growth Hormone in children with Growth Hormone Deficiency (GHD) and Turner Syndrome (TS).

Turner Syndrome is a common genetic disorder. Seventy percent of adults with Turner Syndrome have abnormalities in glucose metabolism which can lead to diabetes. The current screening guidelines for diabetes in Turner Syndrome are not specific and involve a fasting blood sugar once a year. The objective of this study is to determine if there are abnormalities in glucose metabolism and pancreatic function in young girls with Turner Syndrome. The study hypothesis is that pancreatic dysfunction (specifically of the beta cells that make insulin) is more prevalent in girls with Turner Syndrome compared to healthy controls.

The primary objective of this study is to determine whether specific patterns of circulating micro-ribonucleic acids (miRNAs) are associated with aortic aneurysm and dissection in patients with hereditary aortopathy syndromes. The most common of these syndromes is Marfan Syndrome (MFS), but several other recognized aortopathy syndromes are well characterized. The investigators propose the use of a simple blood test, from which miRNA profiles can be measured in individuals with aortopathy syndromes to be compared with miRNAs observed in a control population that has no known predisposition for aortic disease. The investigators hypothesize that microRNA profiles in individuals with Marfan syndrome, and related disorders, will be distinct from those seen in a control group. The investigators predict that up- or down-regulation of certain miRNAs will correlate with the presence and severity of aortic aneurysm, responses to medical therapy, and ultimately could be used to determine when an individual may be at risk of dissection.

This study is a multicenter, open-label, observational, postmarketing surveillance study of Genentech growth hormone (GH) products in the treatment of girls with Turner syndrome in the United States and Canada.

In January 2007, the American Congress of Obstetricians and Gynecologists (ACOG) revised its guidelines that now recommend physicians are ethically obligated to fully inform all pregnant women that screening for fetal chromosomal abnormalities including biochemical screening tests and invasive procedures such as CVS or amniocentesis is available, regardless of age. Further, it is entirely up to the patient to decide whether or not she wishes to be screened for fetal chromosomal abnormalities without judgment from the physician. Noninvasive laboratory-developed tests (LDTs) that detect an abnormal amount of maternal and fetal DNA in an expectant mother's blood sample (known as circulating cell-free DNA) are now available. These LDTs have not been cleared or approved by the U.S. Food and Drug Administration (FDA). Although LDTs to date have not been subject to U.S. FDA regulation, certification of the laboratory is required under the Clinical Laboratory Improvement Amendments (CLIA) to ensure the quality and validity of the test. To sample collection study will obtain whole blood specimens from pregnant subjects to be used for development of prenatal assays to assist in the screening for fetal genetic abnormalities, infectious and other diseases, and blood group typing through detection of circulating cell-free DNA extracted from maternal plasma.

An observational study of 102 women with Turner syndrome followed for 6 years with a two-yearly examination including ECHO, MRI of the heart and 24 ambulatory blood pressure. It has been found that besides an significantly increased risk of congenital cardiac malformations, TS have an increased risk of developing cardiac disease including the life threatening condition of aortic dilatation and rupture. The aim of the study is to describe the cardiac conditions of TS, evaluate different methods of examination and identify possible risc factors.

The investigators wish to explore the variability of uterine, breast and bone outcome markers as surrogates to assess the adequacy of exogenous oestrogen replacement in individuals with hypogonadism.

The goal of this study is to compare the features of Turner syndrome in girls who are diagnosed before birth because of fetal concerns versus those who are diagnosed when their mother has an amniocentesis for another reason.