Clinical Trials

This study will develop a complete dataset of outcomes on the largest prospectively and rigorously phenotyped ADPKD cohort with ~20 years of follow-up and accompanying biospecimen repository, which will be a valuable and unique resource for biomarker discovery, validation, and model building for the current proposal and for the greater PKD scientific community.

This study proposes to continue follow-up of the CRISP observational cohort of patients with autosomal dominant polycystic kidney disease (ADPKD), and to follow-up patients from the HALT Study A. Since the goal of this study is to elucidate the natural history of ADPKD in patients, this can only be achieved through the study of human subjects.

Through this study, knowledge will be gained about the natural history of the disease, biomarkers that can predict the subsequent course of the disease, and models to predict the risk and timing of development of kidney failure.

The purpose of this study is to determine whether patients with ADPKD present with abnormal levels of fumarate that correlates with disease severity and this increase in fumarate results in upregulation of Nrf2 signaling leading to increased cellular proliferation and contributing to cystogenesis.

The overall objective of this study is to define genes causing cystic kidney disease and to determine the degree to which variants at these cystic kidney disease genes underlie the clinical diversity of these disorders. This will provide an insight into the disease mechanisms, and explore novel mutation screening methods.  A combination of mutation screening in clinically characterized human cystic kidney disease populations, gene hunting and exploration of incompletely penetrant alleles in humans will provide a comprehensive picture of how mutations cause the resulting phenotype.

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.

The purpose of this study is to assess homocysteine metabolism and endothelial function at early stages of ADPKD and how these influence microvascular function and renal disease severity and progression. 

The natural course of autosomal dominant polycystic kidney disease (ADPKD) is highly variable and typically characterized by progressive enlargement of cysts within the kidneys.  ADPKD is a leading cause of end-stage renal disease.  Recently, a new medication called Tolvaptan has been approved by the FDA to slow progression of ADPKD.  Accurate, MR based kidney volume measurements are the best parameter for following the progression of ADPKD, and are suggested be acquired to measure progression and effects of Tolvaptan.  However, making these slice-by-slice volume measurements can be extremely time consuming when done manually.  The purpose of this work is to evaluate an AI algorithm to make the measurements.  The results of the algorithm will be reviewed by a qualified radiologist familiar with the algorithm’s results.  If the radiologist agrees with the results, kidney volumes (left, right and combined) will be recorded for clinical use.  The usage of the algorithm in this setting (with review by radiologist, and manual correction) is a minimal risk to the patients: a failure of the algorithm will have no impact on treatment and errors will be caught and corrected by the QC process. Because the algorithm will not be used solely for diagnosis or inform treatment without the confirmation of the diagnosis by another, medically established diagnostic product or procedure this study constitutes minimal risk to patients. 

This research study is being done to create a collection of biospecimens (blood, urine, cyst fluid, bile, kidney or liver tissue, etc.) that can be used to facilitate the conduction of research on polycystic kidney and/or liver disease.

The purpose of this study is to determine the impact of foam sclerotherapy of large, dominant kidney/liver cysts on quality of life outcomes and kidney/liver cyst volumes at up to 12 months of follow-up in patients with autosomal dominant polycystic kidney disease (ADPKD) and autosomal dominant polycystic liver disease (ADPLD).
 

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 research study is to improve our understanding of normal liver and gallbladder function and liver and gallbladder diseases including PBC, PSC, ADPKD (Autosomal Dominant Polycystic Kidney Disease), and ARPKD (Autosomal Recessive Polycystic Kidney Disease) and gallbladder inflammation (cholecystitis).