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The goal of this study is to develop better methods of diagnosis, localization, and treatment for pheochromocytomas. These tumors, which usually arise from the adrenal glands, are often difficult to detect with current methods. Pheochromocytomas release chemicals called catechola…

Objective: One objective of this study is to genetically map and identify mutated genes for human hereditary hearing loss. A second objective is to study the function of these genes in the auditory system using mouse models. Human hereditary hearing impairment is the result of ab…

Chronic pancreatitis (CP) is a disease characterized by inflammation and their replacement by fibrotic tissue. The destruction of pancreatic function and structure are the main complications. This retrospective-prospective, multicenter, cohort study was conducted. This study aime…

This study, utilizing a large-scale multicenter Eastern database, has established a Deep Learning-based predictive model for recurrence following gastric cancer surgery, which demonstrates robust discriminatory power for early recurrence. Furthermore, the individualized recurrenc…

The purpose of this study is to investigate new non-invasive imaging techniques for the evaluation of skin lesions, as well as normal skin. Our primary goal is to collect and study these images of different skin lesions along with matching biopsy specimens. The long-term goal is …

This study will examine the effectiveness of a new laboratory method for detecting pneumocystis organisms in a salt-water (saline) oral wash. Pneumocystis infection in people with weakened immunity especially patients with HIV infection or cancer, organ transplant recipients and …

Two large, nutritional intervention trials were conducted in Linxian, China between 1985-1991. These trials tested the effect of multiple vitamins and minerals in the prevention of esophageal cancer in a population with the highest known rate for this disease in the world. Result…

In 1999, when initiating antiretroviral treatment in HIV infected adults, a triple combination with protease inhibitor is recommended. Such therapy induces side effects and the number of pills may reduce therapy adherence. The aim of this study is to evaluate the efficacy and the…

The aim of this project is to identify genetic risk factors associated with familial papillary thyroid carcinoma (PTC). Papillary thyroid cancer is a type of cancer that shows high heritability. However, the specific genetic factors that cause an increased risk have been elusive.

The Division of Cancer Preventionl (DCP, formerly DCPC), under extramural contracts to 10 U.S. clinical centers, is evaluating the effectiveness of screening for prostate, lung, colorectal and ovarian cancer (The PLCO Trial). In 1996 the NCI Executive Committee approved the expan…

The aim of this study was to develop and pilot a cognitive-behavioral therapy (CBT) parent-child intervention for 4-7-year-old children at risk for anxiety disorders. The 20-session intervention was first piloted openly in 9 children (between 3/10/98 and 1/1/2001). The interventi…

This trial studies the genetic and behavioral factors that may contribute to the development of specific cancers and how these factors may affect the outcome of the disease in patients with a history of cancer and their relatives.

Upon completion, this project will determine if dietary acid reduction done with either fruits and vegetables (F+V) or the medication sodium bicarbonate (NaHCO3) in study participants with high blood pressure (hypertension) and initially normal kidney function but with signs of k…

This study will determine whether patients who have been infected with the Lyme bacteria, Borrelia burgdorferi, and treated with antibiotics still have the bacteria alive inside them and whether it is causing their symptoms. The information from this study may serve as a basis fo…

The present protocol is designed to create a "scaled-down" hormonal milieu of pregnancy and the puerperium in order to determine whether it is the abrupt withdrawal of gonadal steroids or the prolonged exposure to gonadal steroids that is associated with mood symptoms.

Pulmonary lymphangioleiomyomatosis (LAM) is a destructive lung disease typically affecting women of childbearing age. Currently, there is no effective therapy for the disease and the prognosis is poor. This study is designed to determine the disease processes involved at the lev…

Lentiginosis refers to groups of diseases marked by the presence of pigmented spots on the skin. These conditions are most commonly associated with multiple tumors and changes in hormone producing glands. The cause of these diseases is unknown, but researchers suggest there may b…

The prospect of disease-modifying therapies in the pipeline for Alzheimer's Disease (AD) has intensified efforts to use brain imaging more effectively for diagnosis and monitoring of dementing illnesses. There is also emerging awareness of the destructive interplay between AD and…

This randomized phase III trial is studying surgery and axillary lymph node dissection to evaluate if systematic Axillary Lymph Node Excision can be avoided in locoregional treatment for operable breast cancer smaller than 10 mm among menopausal women older than 50

The goal of the study is to gain a better understanding of the molecular changes responsible for causing prostate cancer and that examination of tissue and blood samples will help in the development of improved screening and therapeutic approaches.