251 Clinical Trials for Various Conditions
Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and in infected patients, it produces symptoms which range from completely asymptomatic to those expressing severe illness. Early recognition of those developing severe manifestations allows for rapid and appropriate intervention, including admission to intensive care unit and intensive care therapy, such as mechanical ventilation. A current problem is that only limited data exist predicting the clinical course of COVID-19. This study will determine whether non-invasive urinalysis is useful in assessing and predicting the severity or clinical course of patients with COVID-19.
The purpose of this study is to see whether gene mutations can be found in the urine or blood of lung cancer patients and urine of colorectal cancer patients. Gene mutations are when DNA in a gene is damaged in a way that changes the genetic message carried by that gene. Gene mutations can sometimes cause lung cancers. These gene mutations are only found in lung and colorectal cancer cells, not the normal cells in your body. All lung cancer tumors and colorectal cancer tumors are now tested for different gene mutations as their presence affects lung cancer treatment. Tumor samples obtained from a biopsy or surgery are typically tested for these gene mutations.
The objective of this study is to use a DEK ELISA to quantitatively measure DEK protein in the urine of patients suspected of having bladder cancer. The measurement of urine DEK protein, relative to an established cut-off, is correlated with the presence or absence of bladder cancer.
S100B, a calcium-binding protein, is found predominantly in the central nervous system (CNS) and is increased in CSF and blood after CNS injury. There are two objectives to this study. Is urine S100B concentration correlated with the serum concentration of S100B in infants born at 29-36 weeks gestation. The presence and severity of intracranial pathology on S100B concentration will be investigated. Further analysis will demonstrate if birth weight, daily fluid intake, urine output, and urine creatinine influence this relationship.
This study will collect blood and urine samples from patients undergoing radiation therapy for glioblastoma multiforme (a type of brain tumor) to investigate the effects of this treatment on blood cells and certain proteins. The information from this study may help scientists develop new tests to measure radiation exposure and find new ways to treat cancer with radiation, and help determine which kinds of patients or tumors respond better to radiation therapy. Two proteins of particular interest in this study and which may be involved in the recurrence of cancer are VEGF (vascular endothelial growth factor) and MMPs (matrix metalloproteinases). Patients 18 years of age and older with glioblastoma multiforme who are receiving or will receive radiation therapy as part of their medical treatment may be eligible for this study. Candidates are screened with a history and physical examination, blood tests, and magnetic resonance imaging (MRI) of the brain. Participants will have blood and urine samples collected before, during and after completion of their radiation treatment. Urine samples are collected in a cup and about 2 tablespoons of blood are withdrawn through a needle in a vein. Additional samples may be requested at different times during treatment and in the 3-year follow-up period.
Background: -Research in NCI's Radiation Oncology Branch depends on the availability of blood and urine samples from patients receiving radiation therapy. Objectives: -To explore the effects of radiation therapy on gene expression in white blood cells, to measure radiation damage in red blood cells and to examine changes in hormone levels in the blood and urine after radiation therapy. Eligibility: -Patients 18 years of age and older who are receiving radiation therapy. Design: * Blood and urine samples are collected when participants enter the study. * Additional samples may be collected at different times during and after treatment. Ideally, samples are obtained before, at the completion of, and 1 month following radiation therapy. Blood samples usually will be collected during routine patient monitoring procedures and will not require an additional needle stick. * A total of 300 patients will be studied at the NCI in Bethesda, MD, Johns Hopkins University in Baltimore and the University of Pennsylvania in Philadelphia.
Citrulline dietary supplements are of interest for improving cardiovascular and exercise performance. The health benefits of citrulline are attributable to its ability to increase arginine levels in the body through the intestinal-renal arginine conversion pathway. From a dietary supplementation standpoint, citrulline offers advantages over arginine due to its reduced first-pass metabolism and ready conversion to arginine within the body. While L-citrulline is the most widely used citrulline dietary supplement, additional salt forms such as citrulline maleate and citrulline HCl may provide improvements in the delivery of arginine to the body. The present study compared the single-dose pharmacokinetics of L-citrulline and citrulline HCl formulations in healthy human subjects. A total of 17 subjects were randomly assigned to groups receiving either 6 g of L-citrulline, 6 g of citrulline HCl or 2 g of citrulline HCl. The resulting increases in citrulline and arginine in plasma and urine samples were determined using liquid chromatography-multiple reaction monitoring mass spectrometry (LC-MRM/MS). All citrulline dietary supplements examined produced time-dependent increases in plasma citrulline and arginine. Both maximal plasma concentration (Cmax) and area under the plasma vs time curve (AUC) for citrulline were modestly reduced in the 6 g citrulline HCl treatment group, the resulting arginine Cmax and AUCs were similar for both L-citrulline and citrulline HCl at the 6 g dose. While the 2 g dose of citrulline HCl had reduced Cmax and AUC values compared to 6 g doses, the time to reach peak levels of arginine were significantly shorter. Furthermore, examination of the relative arginine bioavailability achieved with the 6 g and 2 g citrulline HCl compared to the 6 g L-citrulline was approximately 120% and 215%, respectively, consistent with an improved citrulline to arginine conversion efficiency with the citrulline HCl formulations.
The goal of this observational study is to learn about the performance of the Bladder CARE™ Assay in patients suspected of having bladder cancer with atypical cytology or equivocal cystoscopy results. The main question it aims to answer is: • Does the Bladder CARE™ Assay detect bladder cancer in patients who have inconclusive cytology or cystoscopy results? Participants will provide one voided urine specimen on the day of, and prior to, the routine, scheduled standard of care initial or repeat cystoscopy procedure. A medical records review will occur at two follow-up timepoints, (6 months and 12 months after the urine specimen collection), to document oncology-urinary-related clinical outcomes.
This post-market study will assess the performance of and user satisfaction with the PureWick™ Male External Catheter in a home setting. The study will also observe safety of the study device and collect information from participants about their experience using the device.
Adults 18 years or older with urinary tract infection (UTI) symptoms. Participants will be assigned to either the urine culture group or the DNA PCR study group by randomization. At time of enrollment in the study they will be also asked to fill out two questionnaires. If prescribed antibiotics for treatment of a UTI, participants will then be called the day after they are scheduled to stop their antibiotics. Participants will be asked to fill out questionnaires the day after finishing antibiotics. Participants will be enrolled in the study for a maximum of 21 days.
This is a research study to measure DNA markers in the urine of patients with upper tract urothelial cancer (UTUC) before surgery and during follow-up visits. Identifying these DNA markers could improve diagnosis before surgery, help assess risk, and predict early recurrence of the cancer. Urine samples will be de-identified and sent to Zymo/Pangea Research Corporation for analysis. The results of this test will be compared to the traditional tests in upper tract urothelial cancer, such as cells in the urine and tissue biopsy.
The goal of this observational study is to validate a non-invasive, urine-based diagnostic technology for the detection and differentiation of various gastrointestinal (GI) diseases. This research study intends to enroll participants across a range of demographics and GI disease states including colorectal cancer, small intestinal bacterial overgrowth (SIBO), Crohn\'s disease, and Celiac disease, collect urine samples and clinical data, and use artificial intelligence and machine learning to build disease-specific models which can identify and differentiate a participants' specific GI disease. The main questions it aims to answer are: 1. Does the platform identify a disease signal within each disease cohort, compared to normal controls? 2. How well does the test perform (e.g. sensitivity and specificity/false-positive rate)?
This post-market study will assess the performance of and user experience with the PureWick™ System in a home setting. The study will also observe safety of the study device and collect information from participants about their quality of life before and after using the device.
Study volunteers will be required to conduct a home pregnancy test (HPT) at the trial center and provide a sample of urine from the same void for further testing. Volunteers will then complete a product usage questionnaire and leaflet comprehension questionnaire at site.
This study includes adult patients who see a urologist because of blood in their urine. The amount is so small it can only be seen with a microscope. This is called microhematuria. There can be many reasons for microhematuria. One of them is bladder cancer. While bladder cancer is one of the biggest worries, it is only found in few of these patients. Most microhematuria patients will have a cystoscopy to look inside the bladder. During a cystoscopy, a small camera is inserted into the bladder. This is done through the urethra, the tube that passes urine from the bladder to the outside. In some patients it can cause pain or anxiety. Not all patients have a cystoscopy. Those that don't, usually return for a urine sample within 6 months. This is done to check if there is still blood in their urine. This study is conducted to find out if the use of "Cxbladder Triage Plus" changes the number of cystoscopies in microhematuria patients. Cxbladder Triage Plus is also called "Triage Plus". It is a lab test that was developed to check how likely urothelial carcinoma is present in the bladder. Urothelial carcinoma is by far the most common type of bladder cancer. For the test, the patient voids some urine into a cup. A laboratory then checks the urine of specific genetic material. Abnormalities can be a sign of urothelial carcinoma. The result indicates if the urine is more like most normal urine or more like that of urothelial carcinoma patients. The study is done to find out how Triage Plus changes the number of cystoscopies. Study participants first void urine into a cup. The urine is used for the Triage Plus test. The patients are then assigned to one of two groups. The assignment is random. This means the nobody can influence the assignment. The chance to be assigned to either group is the same. In the test group, the urologist will receive the Triage Plus result and discuss it with the patient. Together they decide whether to do a cystoscopy. In the control group, the urologist will not receive the Triage Plus result. The patient will also not get the result. The urologist and patient will follow standard of care to decide whether to do a cystoscopy. For test group patients, the study gives a recommendation whether to proceed with cystoscopy. It is based on the patient's Triage Plus result. The urologist and patient do not need to follow the recommendation. If the urologist does not follow it, they will complete a survey. The patient will be asked to complete a survey if they don't follow the urologist's recommendation. The survey has only one question. It is asking for the reasons of the decision. After making their decision, patients will follow the chosen pathway. Data on the performed procedures are collected. The diagnosis will also be documented. Data will be collected for up to about 9 months. To see how Triage Plus changes the number of cystoscopies, these will be counted in each group and then compared.
This study explores the potential use of DNA markers in the detection of prostate cancer and patient perceptions of this screening approach and other current or future prostate cancer screening and diagnostic tests.
This study is being done to collect blood, tissue and urine samples to identify a novel high quality methylated DNA marker in patients with renal tumors.
The incidence of kidney stone disease continues to rise globally. Although the treatment of kidney stone disease has dramatically improved in recent years, surgical management remains invasive and expensive. Patients who develop kidney stones are at high risk of recurrence during their lifetime; therefore, prevention of stones should be a primary focus. Low levels of citrate and acidic urine are risk factors for the formation of kidney stones such as calcium oxalate and uric acid, respectively. Calcium oxalate stones are the predominant stone composition in the United States, accounting for over 2/3rds of stones. Citrate is a key inhibitor of calcium oxalate crystal formation and thus increasing it in the urine of a calcium oxalate stone former is quite beneficial. Uric acid stones account for approximately 10 percent of all stone types. These stones form primarily due to an acidic urinary environment which is a prerequisite for crystal formation. Common medications for stone formers include potassium citrate which help to make the urine more alkaline. Although effective, these medications have side effects and may prove to be too expensive (upwards of $450/month). Consuming baking soda (sodium bicarbonate) may prove to be an inexpensive ($0.34/month) equally effective alternative with respect to increasing urinary citrate levels and alkalinizing the urine. Investigators hypothesize that twice a day oral baking soda in a liquid medium (e.g., water, orange juice, soda, etc.) can be an effective, and inexpensive alternative to urocit K with regard to alkalinizing the urine and raising urinary citrate levels.
Urothelial cancers of the bladder and upper urinary tract account for over 200,000 deaths and 600,000 diagnoses annually worldwide. The most common presenting symptom is hematuria (blood in urine), triggering a cascade of tests, including an invasive examination of the bladder using a flexible scope (cystoscopy). Millions of cystoscopies are performed every year worldwide for patients presenting with hematuria, but only 10% result in a cancer diagnosis. The UROSCOUT-1 trial is a prospective multicenter observational study that explores the potential of urine tumor DNA (utDNA) testing to replace a significant portion of cystoscopies in the diagnostic setting for hematuria or other reasons to rule out urothelial cancer. The goal is to enhance patient quality of life, reduce healthcare costs, and address increased workloads in urology centers. Sample collection will be conducted by mail, and the samples will be analyzed in a blinded manner, without knowledge of which patients are diagnosed with cancer. Random subsampling will be applied to cancer-negative patients to achieve an approximate 1:1 ratio between cancer-positive and -negative patients.
The purpose of this study is to evaluate patient-reported preference for urine based molecular testing (CxBladder Monitor) compared to cystoscopy for patients on surveillance for Nonmuscle Invasive Bladder Cancer (NMIBC). Urine based molecular testing involves noninvasive testing of a urine sample for biomarkers associated with disease recurrence. Cystoscopy is an examination of the bladder and urethra using a thin tube like instrument that is inserted into the urethra.
The purpose of this research is to collect biological samples (urine) to develop assays for immune biomarkers to possibly in the future be able to screen subjects with Fabry disease and be able to understand better progression of nephropathy in Fabry disease and predict nephropathy in Fabry disease.
The researchers are doing this study to test the ability of an animal biosensor platform (ABP) to detect NSCLC. Participants in this study will either be diagnosed with NSCLC, suspected to have NSCLC, or have not been diagnosed or suspected to have NSCLC. The ABP test uses laboratory animals that are trained to detect (by smell) different chemicals in urine. Studies show that people with lung cancer have unique chemicals in their urine that are not present in people without lung cancer, and researchers think these chemicals can be used to identify people with lung cancer without the need for invasive procedures (like biopsy).
The objective of this study is collect urine samples from healthy adult subjects and subjects with stable chronic morbidities for future testing to serve as controls and establish reference ranges in the development of new invitro diagnostic devices.
The purpose of this study was to collect additional performance and clinical data on the Minuteful - Kidney test device (previously "ACR \| U.S. Urine Analysis Test System"), following the original data collection (NCT04626271). This method comparison and usability study was designed to evaluate the agreement levels of the Minuteful - Kidney Test with the comparator device (URiSCAN Optima) as well as the device's usability including the lay user's ability to understand and implement the device instructions. It also evaluates the ease of use of the device under actual use conditions in a simulated home environment.
The purpose of this research is to determine whether bladder cancer monitoring can be improved by replacing some cystoscopy procedures with urine testing. Specifically, this study examines whether there are any differences in urinary symptoms, discomfort, number of invasive procedures, anxiety, complications, cancer recurrence or cancer progression when some cystoscopy procedures are replaced with urine testing.
The AnchorDx UriFind™ Bladder Cancer Assay is designed to detect 2 DNA methylation biomarkers in urine specimens from patients 22 years or older suspected of having bladder cancer. Results from the assay are intended for use, in conjunction with current standard diagnostic procedures, as an aid for initial diagnosis of bladder carcinoma in patients.
The purpose of this research study is to test the different components in urine and see if they can be matched to food, exercise and sleep that participants report. The researchers are trying to find out if urine would allow them to predict medical problems as they are happening. Participants are healthy volunteers who are willing to give urine samples on a daily basis, and can expect to be in the study for 28 days.
The objective of this study is the detection, quantification, and resistance gene identification of pathogens by using the urine of patients with urinary tract infection (UTI) symptoms.
This is a pilot study for identifying plasma and/or urine-derived adherence/surrogate biomarker candidates for verifying Immulina™ ingestion by human volunteers (collected before and after consumption of Immulina™, a natural dietary supplement).
This study aims specifically to compare the rates of contaminants between standard clean-catch urine collection and urine collected using the PEEZY device. In particular, this study will compare the rates of contamination as stratified by BMI status (i.e., BMI \< 30 and BMI ≥30). Based on previous studies through LUHS and the Wolfe lab, we anticipate a reduction in contamination from sample collected using the PEEZY device, particularly among those pregnant women with BMI ≥30. To investigate this hypothesis we have designed a prospective unblinded randomized controlled trial comparing voided urine specimens obtained for asymptomatic bacteriuria in pregnant women presenting for obstetric care with use of standard clean-catch (CC) sampling method versus specimen obtained using PEEZY collection device.