Active clinical trials for "Polycystic Kidney, Autosomal Dominant"

The objective of this study is to measure the influence of both short term water restriction and high water intake on total kidney volume, measured by Magnetic Resonance Imaging (MRI) scan in Autosomal Dominant Polycystic Kidney Disease (ADPKD) patients.

The aim of this study is to identify families with ADPKD , characterize the phenotype and screen for mutations in known genes (PKD1 and PKD2, and then HNF1b and UMOD in PKD1 PKD2 negative carriers). Genome wide analysis will be performed in families without mutations identified.

The purpose of this study is to determine whether patients with autosomal dominant polycystic kidney disease (ADPKD) present with abnormal endothelial function, increased levels of NOX4 activity and mitochondrial abnormalities, contributing to oxidative stress from early stages that correlate with disease severity.

The purpose of this study is to establish normal Magnetic Resonance quantitative values (tissues stiffness, Apparent Diffusion Coefficient values and Blood Oxygen Level Determination values for both renal cortex and medullary tissues and total renal blood flow) for young Autosomal Dominant Polycystic Kidney Disease patients with normal renal function, and normal young adult controls without Autosomal Dominant Polycystic Kidney Disease and normal renal function. Hypothesis: Newer Magnetic Resonance quantitative imaging parameters (tissue stiffness, Apparent Diffusion Coefficient, Blood Oxygen Level Determination levels, Magnetization Transfer and renal blood flow) will have different values in young adult ADPKD patients as compared to normal volunteers.

Polycystic kidney disease (PKD) is a genetic disease that occurs in 1 in 500 individuals and leads to kidney failure in half of all affected. Currently, no treatments exist for PKD. PKD-affected kidney cells divide and multiply inappropriately, and form fluid-filled sacs called cysts. Kidney cysts continue to grow throughout life, destroying normal kidney tissue, leading to kidney failure. Based on evidence from basic science research it is believed that drinking high amounts of water can slow the abnormal cysts growth. This study aims to look at changes in urine composition with high water intake in PKD-affected persons compared to healthy individuals.

This is a single center, comparative cohort study to investigate alterations in hepatic transporter function in subjects with autosomal dominant polycystic kidney disease (ADPKD) compared to healthy subjects and subjects with non-ADPKD renal disease. Eligible subjects will be 18-65 years of age and of any race/ethnicity and gender.

The number of people with kidney disease is constantly rising and renal failure represents one of the major health care burdens globally. An accurate measurement of kidney function is urgently needed to better understand and treat loss of renal function. Kidneys have an intrinsic reserve capacity to respond to a higher work load by increasing filtration in their nephrons. The number of nephrons and their reserve capacity define how well kidneys can adapt to an increased demand and disease. The degree of renal reserve capacity becomes particularly important when the number of functioning nephrons is significantly reduced either due to surgical removal of one kidney as in living kidney donation or in tumor nephrectomy or due to progressive injury as in autosomal dominant polycystic kidney disease (ADPKD). A reduced functional reserve likely reflects an impaired adaptive capacity and increased risk of accelerated loss of function in the remaining single kidney or in kidneys exposed to a disease. Despite the importance of accurately measuring baseline and reserve capacity renal function, due to the time- and laborintensive procedure, in clinical routine this testing is rarely done. Investigators aim to measure renal functional reserve (RFR) and loss of function in patients undergoing nephrectomy (living kidney donors and renal tumor patients) as well as in patients with ADPKD. The results should provide evidence whether renal functional reserve indeed predicts adaptive capacity and functional loss after removal of a healthy kidney (living donors), of a tumor kidney (cancer patients) or in progressive kidney disorders (ADPKD patients). Investigators are confident that the proposed project will enhance the understanding of progressive kidney disease and with this improve donor safety, planning of tumor nephrectomy, and prediction of renal functional loss as well as provide a strong argument that dynamic renal function testing, i.e. accurate measurement of baseline and reserve capacity, is necessary in certain disease entities.

Autosomal dominant polycystic kidney disease (ADPKD) is an inherited disease. We plan DNA analysis using the next generation sequencer (NGS) and examine the relationship between mutational types and clinical phenotypes. The accuracy of DNA analysis with NGS is tested by Sanger's method. The kidney and life survival curves will be compared between PKD1, PKD2 and non-ADPKD family members.

To collect characteristics of patients with ADPKD across a broad population, over time to better understand disease progression (signs, symptoms and outcomes). Association with total kidney volume changes and other measures of disease progression will be determined in order to identify a population at increased risk for disease progression. The economic and quality life impact of ADPKD will be assessed. Subjects who terminated participation early from clinical trials with tolvaptan may also be followed.

This pilot study will compare endothelial function in patients with ADPKD with matched healthy volunteers and normotensive chronic kidney disease stage 1 & 2 patients. Patients will undergo a single assessment of endothelial function and measurement of plasma and urine levels of biomarkers of endothelial function.