Clinical Trials Logo

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

NCT number NCT01127854
Other study ID # 09-007826
Secondary ID
Status Enrolling by invitation
Phase
First received
Last updated
Start date December 2009
Est. completion date December 2024

Study information

Verified date January 2024
Source Mayo Clinic
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Recent investigations from this group have identified that genetic variants of genes associated with monogenic forms of nephrolithiasis are expressed in idiopathic calcium oxalate kidney stone patients and could influence stone forming risk. Utilizing patient samples from the Mayo Clinic Florida Kidney Stone Registry, we will demonstrate that expression of these heterozygous mutations in idiopathic nephrolithiasis act as genetic modifiers of disease presentation increasing risk of kidney stone formation. Complimented by the analysis of environmental and lifestyle risk factors, these studies will define environmental and genetic susceptibility factors involved in kidney stone formation and reoccurrence.


Description:

Nephrolithiasis occurs in approximately 1 in 10 individuals in the United States with increasing prevalence noted over the past three decades (ref: Worcester E, Coe F. Nephrolithiasis. Prim Care Clin Office Pract 35 (2008) 369-391). Recurrence is common - occurring in more than 50% of these patients, many of whom require surgical intervention. An estimated 5-6 billion dollars a year is spent on the treatment of kidney stones. Symptoms of kidney stones include flank pain, blood in the urine, and nausea and vomiting. Beyond acute attacks associated with considerable morbidity and cost, recent reports have identified an association between kidney stone formation and an increased risk for the development of hypertension, chronic kidney disease, end stage renal disease and myocardial infarction. Therefore, nephrolithiasis not only impacts socioeconomics but also has broader public health implications. Genetic and environmental risk factors have both been linked to nephrolithiasis with about 40% of the patients presenting with kidney stones having at least one relative who is also a stone former. Genetic variants that are causative of monogenic forms of nephrolithiasis have been well defined. However the frequency of these monogenic mutations and their presence as predisposing factors of disease is poorly understood within the idiopathic stone forming population. We recently identified that heterozygous mutations of HOGA1, a gene that is associated with the onset of primary hyperoxularia Type III, are also present within the idiopathic stone forming population and absent in matched controls. These findings suggest that the presence of these mutations could be indicative of an increased risk for kidney stone formation within these patients. We therefore propose to; Aim 1: Validate and expand our previous studies to define that genetic variations of HOGA1 are a predisposing factor for idiopathic calcium-oxalate stone formation, and Aim 2: Mutational analysis of genes involved in kidney stone formation for determination of genetics of risk. These clinical studies will identify the frequency of known genetic variants associated with monogenic forms of nephrolithiasis within idiopathic stone forming populations and associate their presence with heightened risk. Patient genomic DNA, blood, clinical data and risk data are available from the Mayo Clinic Florida Kidney Stone Registry. Genomic DNA and RNA will be assessed for mutations within HOGA1 and their significance as predisposing factors for disease evaluated through statistical analysis and compared to environmental factors for risk. Evaluations will also be undertaken in control patient samples, identifying that these mutations are specific for idiopathic kidney stone formation risk. Furthermore, genetic variants within AGXT, GRHPR, HOGA1, CLCN5, OCRL1, SLC3A1, SLC7A9, and APRT will be analyzed for frequency in idiopathic nephrolithiasis patients and control patient populations to determine their role as predictive genetic markers for idiopathic disease risk. This proposed study has the potential to identify genetic variants that are predisposing factors for idiopathic kidney stone formation and are predictive of disease risk. These studies have relevance to personalized treatment regimens for disease intervention and targeted prevention of reoccurrence. Furthermore, the knowledge gained pertaining to genetic variants in idiopathic stone formers may lead to the creation of genetic tests for the early diagnosis of those patients at higher risk of idiopathic nephrolithiasis. Nine hundred idiopathic kidney stone formers and 900 non-kidney stone forming controls will be examined for the evaluation of HOGA1 genetic variants. We propose to use the patient resources provided by the Kidney Stone Registry and control samples from the Mayo Clinic BioBank in Florida. Briefly, for the Kidney Stone Registry, all cases presenting with kidney stones are invited to enroll in the Registry. Enrolled patients are approached for data abstraction, risk factor questionnaire completion, biospecimen collection (blood and DNA) and long-term follow-up. At this time we have over 1500 phenotypically well characterized patients enrolled within the registry with approximately 500 new patient enrollments each year. For these studies, we will only utilize samples and patient histories from idiopathic calcium oxalate stone formers and controls. The PI of this application oversees the running of this registry. Controls will be selected from patients who have consented genomic DNA samples to the Mayo Clinic Biobank (http://mayoresearch.mayo.edu/mayo/research/biobank/). These controls are defined as patients who have a negative personal history of symptomatic urolithiasis and no family history of kidney stone formation. Dr. Parker oversees the running of the Mayo Clinic BioBank in Florida. Patient records and information will only be available to the PI, co-investigator and biostatistician named on this proposal. Phenotypical Analysis: Phenotype data will be extracted from patient's medical records. All patients provide informed consent to DNA testing and record review under research protocols approved by the Mayo Clinic Institutional Review Board. Risk Factor Data Collection: A self-administered questionnaire is provided to each patient on their initial visit by the practitioner, is provided within the Appendix. Those patients that have consented to be enrolled in the Kidney Stone Registry and consented to be included in this study will be our case study group. The questionnaire requests patients to provide information pertaining to family history, lifestyle and environmental risk factors for kidney stone formation. All questionnaires are reviewed by the study coordinator for completeness and accuracy of responses.


Recruitment information / eligibility

Status Enrolling by invitation
Enrollment 2900
Est. completion date December 2024
Est. primary completion date December 2024
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: Cases: - History of calcium oxalate stones - 18 years of age or older - Willing to provide a blood sample, and questionnaire Controls: - 18 years of age or older - No personal history of urolithiasis - Willing to provide a blood sample and questionnaire Exclusion Criteria: Cases: - Secondary causes of urolithiasis including: Bowel disease, Renal tubular acidosis, hyperparathyroidism

Study Design


Locations

Country Name City State
United States Mayo Clinic Jacksonville Florida

Sponsors (1)

Lead Sponsor Collaborator
Mayo Clinic

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary To identify the frequency of known genetic variants associated with monogenic forms of nephrolithiasis within idiopathic stone forming populations and associate their presence with heightened risk. December 2018
See also
  Status Clinical Trial Phase
Enrolling by invitation NCT04746378 - PRedictive Accuracy of Initial Stone Burden Evaluation.
Recruiting NCT05100017 - Methocarbamol vs Oxybutynin for Management of Pain and Discomfort S/P Ureteroscopy Procedure N/A
Recruiting NCT04021381 - Citrate Salts for Stone-free Result After Flexible Ureterorenoscopy for Inferior Calyx Calculi Phase 3
Completed NCT02266381 - A Prospective Comparison of Fluoroscopic, Sonographic or Combined Approach for Renal Access in Percutaneous Nephrolithotomy N/A
Completed NCT01451931 - Study of Tomography of Nephrolithiasis Evaluation Phase 4
Terminated NCT01431378 - Pilot Study of Model Based Iterative Reconstruction Using 64-Slice N/A
Completed NCT01295879 - Vitamin D Repletion in Stone Formers With Hypercalciuria Phase 4
Completed NCT02895711 - Radiation Dose of Pediatric Patients During Ureteroscopy
Completed NCT05340075 - Staged Bilateral Percutaneous Nephrolithotomy
Recruiting NCT03919227 - Measurement of Resistance During UAS Insertion Procedure in RIRS N/A
Recruiting NCT03717285 - Under Direct Vision vs Under Non Direct Vision of Insertion of UAS in RIRS N/A
Completed NCT05340088 - Optimal Passive Dilation Time in Retrograde Intrarenal Surgery
Completed NCT05032287 - Medical Expulsive Therapy Post-SWL For Renal Stones N/A
Recruiting NCT05701098 - SOUND Pivotal Trial - (Sonomotion stOne comminUtion resoNance ultrasounD) N/A
Not yet recruiting NCT04080973 - Metabolic Workup in Patients Suffering From Kidney Stone Disease and Osteopenia N/A
Terminated NCT01736358 - The Use of Intranasal Ketoralac for Pain Management (Sprix) Phase 4
Completed NCT01792765 - Management of Ureteral Calculi Using Ultrasound Guidance: A Radiation Free Approach N/A
Completed NCT06211842 - Genetic Variations That Increase the Risk for Calcium Kidney Stones: a Family-based Study
Not yet recruiting NCT02214836 - Ultrasound Imaging of Kidney Stones and Lithotripsy N/A
Not yet recruiting NCT04606758 - Fluoroscopic Guided vs US-guided Percutaneous Nephrolithotripsy for the Treatment of Stone Disease N/A

External Links