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To evaluate whether genetic variation in selected candidate genes is associated with risk of sudden cardiac death in the general population.

This study will evaluate a program that provides birth control to low income and minority women through home visits by a community health nurse. The goal of the program is to reduce unwanted pregnancies.

This study will explore the causes and eye problems of X-linked juvenile retinoschisis (XLRS), an inherited disease that causes vision loss primarily in young males. The vision loss, which worsens over time, is a result of schisis, or splitting, of the layers of the retina (tissu…

This randomized, placebo-controlled, double-blind 4x4 crossover clinical trial was part of a larger NIH-funded study to evaluate the analgesic efficacy of three doses of chronic oral (PO) dextromethorphan compared to placebo in central neuropathic pain following spinal cord injur…

This study will try to identify the genetic causes of hereditary hearing loss or balance disorders. People with a hearing or balance disorder that affects more than one family member may be eligible for this study. They and their immediate family members may undergo some or all …

The purpose of this study is to see if we can find ways to improve the treatment of tobacco dependence in patients who have cancer or may have cancer. We will compare two ways to help people quit tobacco use before surgery and to stay quit after surgery. One way is a scheduled re…

This study will investigate the cause and medical problems associated with a group of genetic disorders known as inborn errors of cholesterol synthesis, in which the body does not produce cholesterol. People with this disorder may have birth defects and learning and behavioral pr…

There is evidence that early and aggressive treatment with antiretroviral drugs can prevent the loss of immune cell function that accompanies HIV infection. This study will use leukapheresis (drawing blood, separating out the white cells and returning the blood to the patient) to…

Several pelvic prolapses can render defecation difficulties and they are often treated with different surgical techniques. This study will evaluate a novel variation of a laparoscopic technique used to treat rectal prolapse that is modified to treat multiple pelvic prolapses. 25 …

Through this study, we hope to learn more about the mechanisms, which may contribute to development and progression of head and neck cancer. The long-term goal of this study will be to develop new strategies and drugs for the diagnosis and treatment of head and neck cancer.

The main objective of this study is to evaluate how the LCS Complete mobile-bearing total knee system and surgical instrumentation performs.

Study Description: This study examines relations between neurocognitive and clinical features of pediatric anxiety disorders. The study uses neuro-cognitive tasks, functional magnetic resonance imaging (fMRI), as well as magneto- and electro-encephalography (M/EEG). Patients wil…

The purpose of this study is to better understand the genetic factors related to the Chiari I malformation. In people with this abnormality, the lower part of the skull is smaller than normal. As a result, the lowest part of the brain, called the cerebellar tonsils, protrudes out…

The purpose of this study was to investigate whether HBV-DNA vaccination is safe and could restore immune responses in patients with chronic hepatitis B non responder to available therapies.

This study will examine the symptoms, course of disease and treatment of non-tuberculous mycobacterial (NTM) infections, as well as the genetics involved in these infections. Patients with NTM have recurrent lung infections and sometimes infections of the skin and other organs as…

Magnesium sulfate is used for seizure prophylaxis in pregnancies complicated by preeclampsia. There is debate as to how long to continue this therapy after delivery of the pregnancy. Different schemes have been offered to shorten the exposure to magnesium sulfate after delivery, …

In the last few years, a new clinical entity has emerged which includes patients who consider themselves to be suffering from problems caused by wheat and/or gluten ingestion, even though they do not have celiac disease (CD) or wheat allergy. This clinical condition has been name…

The main purpose of this study is to record information from clinical and radiographic examinations and patient assessment questionnaires before surgery and at suitable postoperative intervals to assess the functioning and symptomology of each knee following surgery. In addition…

The purpose of this study is to find substances in the blood and urine that indicate that a person has kidney damage. It will identify proteins found only in patients with acute kidney failure but not in normal healthy people or in patients with volume depletion. Adults and chil…

To investigate whether genetic polymorphisms in genes encoding proteins involved in the metabolism or effects of drugs or environmental agents influence the disposition or effects of these xenobiotic substrates. To investigate the nature of heritability and the genetic basis of p…