- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03067142
Proteomics of Primary Hyperoxaluria Type 1 (PH1)
"Pilot Study: Proteomics of Primary Hyperoxaluria Type 1 (PH1): A Rare Calcium Oxalate Stone Disease"
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Primary hyperoxaluria type 1 (PH1) is a rare genetically inherited disorder seen in 1:100,000-150,000 people and is often underdiagnosed in children. PH1 is characterized by abnormally high levels of oxalate in the blood and urine, crystals in the urine, frequent formation of kidney stones, and hardening (calcification) of the kidneys called "nephrocalcinosis." Identification and evaluation of proteins and peptides (biomarkers) in the urine of PH1 patients may provide insight into the process of kidney damage that occurs over time in PH1 by evaluating these markers at some point after diagnosis and over long-term. By studying biomarker patterns in the urine of PH1 patients that are collected over the course of their disease, information about changes in biomarker patterns over time may provide important clues about those patients at a higher risk for faster progression to end stage kidney failure and may serve as important outcomes for new therapies in the future, too.
Primary study objective: Identify the unique urine proteomic markers of PH1 versus healthy intra-familial sibling controls of PHI patient specimens at one point in time (cross-sectionally).
Secondary study objective: Determine change over time in urine proteomic patterns, their association with change in estimated (calculated) kidney filtering function, and the relative risk for progression of PH1 and kidney disease progression.
Tertiary study objective: Establish if and when, in the course of PH1, the protective effects of the body (and kidneys) for normal kidney tissue healing are decreased/ lost as evidenced by the long-term change in biomarker patterns.
The primary endpoints of this study include standard clinical endpoints (data that a kidney doctor would look at as a PH1 patient would be followed over time in the clinic), as they best reflect PH1 disease progression: (a) estimated glomerular filtration rate (eGFR), known as kidney filtering function; (b) urine oxalate; and (c) plasma oxalate (when eGFR < 40 ml/min/1.73 m2, which is when kidney function is significantly decreased).
The goal of the Rare Kidney Stone Consortium (RKSC) is to advance understanding and treatment of severe, rare forms of nephrolithiasis that cause marked excretion of insoluble minerals important in stone formation in which patients experience recurring stones from childhood onward and are at risk for chronic kidney disease. End state renal disease is common in PH1. Importantly, these conditions are rare enough that there has been minimal sharing of information and expertise among clinicians and scientists, a situation that has slowed progress toward effective treatments. Over the last 6 years, RKSC has formed secure, web-based registries and tissue banks open for collaborative projects.
About this Study: This is a pilot investigation using previously collected and archived (1) cross-sectional 24 hr. urine samples from PH1 patients (n=20) and healthy sibling controls (n=18) and (2) longitudinally collected 24 hr. urine samples from patients with PH1 enrolled in the RKSC registry bank (n=55). No new samples will be collected.
Additional information that will be collected (or provided with the urine specimens) as part of this study: De-identified data from each patient's health history, medications and supplements taken; history of kidney stones (and their chemical make-up); gender, current age, height, weight; old measurements of urine acidity, and blood oxalate, urine oxalate, calcium, citrate, and creatinine (from muscle breakdown) concentrations, and urine super saturation.
Study Type
Enrollment (Actual)
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
- Patients with Primary Hyperoxaluria Type 1 (PH1) OR
- Healthy siblings of those PH1 patients (to serve as "controls)
Description
Inclusion Criteria:
- Have a previously collected 24 hour urine sample from the Mayo Clinic's Rare Kidney Stone Consortium (RKSC) biobank or previously stored at Lurie Children's Hospital (Chicago, IL), a portion of which has been archived (frozen) for future research because you are a patient who has been diagnosed with Primary Hyperoxaluria type 1 (PH1) that is documented by one of the following: (1) PH1 mutation confirmed and/or (2) liver biopsy confirmed; OR
- Have a previously collected 24 hour urine sample, a portion of which has been archived (frozen) for future research, because you are a healthy sibling of a PH1 patient, as described above.
Exclusion Criteria:
- Have a previously collected 24 hour urine sample because you are a hyperoxaluric patient due to other causes (including secondary hyperoxaluria);
- Have PH1 and have had a 24 hour sample collected but a portion of that specimen has not been archived (frozen) for future research;
- Do not have PH1.
Study Plan
How is the study designed?
Design Details
- Observational Models: Case-Control
- Time Perspectives: Other
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Cohort 1 (Phase 1): PH1
Cross-Sectional/Observational
|
Not an interventional study.
Analyses of previously collected urine specimens and data on estimated kidney filtering function.
|
Cohort 2 (Phase 1): Controls
Cross-Sectional/Observational
|
Not an interventional study.
Analyses of previously collected urine specimens and data on estimated kidney filtering function.
|
Cohort 3 (Phase 2): PH1
Longitudinal/Observational
|
Not an interventional study.
Analyses of previously collected urine specimens and data on estimated kidney filtering function.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Phase 1: Urine proteomic markers.
Time Frame: Baseline
|
(1) Quantitative Mass Spectrometry analyses will be completed on previously collected, de-identified, and archived urine specimens (collected at only one time point) from patients with Primary Hyperoxaluria type 1 (PH1) and from healthy controls to determine unique protein markers in the urine of PH1 patients, taking into account archived data collected about: (a) known genetic PH1 mutations; (b) concomitant estimated kidney filtering function; (c) urine and plasma oxalate concentrations (using the measure of plasma oxalate when kidney function is low) (d) the level of kidney function (called a "stage"); and (e) any medications and supplements & their dose and frequency taken for differences in disease (PH1) versus a healthy state.
To accomplish this, urine specimens and data which were previously collected, de-identified, and archived will be provided by Mayo Clinic (Rochester, MN) and Ann & Robert H. Lurie Children's Hospital of Chicago (Chicago, IL).
|
Baseline
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Phase 2: Urine proteomic marker patterns and their change over time related to progression of chronic kidney disease in primary hyperoxaluria type 1 (PH1).
Time Frame: 5 years
|
Quantitative Mass Spectrometry analyses of previously collected, archived, and de-identified serial urine specimens (collected in up to/more than 5 years of follow-up) from patients with Primary Hyperoxaluria type 1 (PH1) will be completed to determine if a change occurs in: (1) urine proteomic patterns (proteins and peptides) over time using previously collected data on: (a) estimated kidney filtering function declines (indicating kidney disease progression) and (b) oxalate concentrations in the urine (or plasma) continue to rise.
Statistical analyses will determine the relationship between the urine protein/peptide pattern changes over time to kidney disease progression in PH1.
All previously collected, de-identified, and archived data and urine specimens will be provided by Mayo Clinic (Rochester, MN).
|
5 years
|
Phase 2: Establish by urine proteome pattern changes if & when normal healing processes of the kidneys are lost, which reflect progressive kidney damage.
Time Frame: 5 years
|
Establish if and when, in the 5 year serial follow-up of Primary Hyperoxaluria type 1 (PH1) urine specimens, normal kidney tissue healing is decreased/lost (down regulated) and pathologic kidney tissue damage increases (upregulated).
This will be evidenced by the long-term change in biomarker patterns and progressive loss of kidney filtering function.
This will be accomplished using: (1) standard identification of specific urine protein and peptides using known databases and (2) statistical analyses for urine protein/peptide marker pattern development reflective of kidney pro-injury and irreversible kidney cell damage.
(All serially collected, de-identified, and archived urine specimens and data will have been provided by Mayo Clinic, Rochester, MN).
|
5 years
|
Collaborators and Investigators
Investigators
- Principal Investigator: Craig B Langman, MD, Ann & Robert H Lurie hildren's Hospital of Chicago, Division of Kidney Diseases
Publications and helpful links
General Publications
- Lapolla A, Seraglia R, Molin L, Williams K, Cosma C, Reitano R, Sechi A, Ragazzi E, Traldi P. Low molecular weight proteins in urines from healthy subjects as well as diabetic, nephropathic and diabetic-nephropathic patients: a MALDI study. J Mass Spectrom. 2009 Mar;44(3):419-25. doi: 10.1002/jms.1520.
- Metzger J, Kirsch T, Schiffer E, Ulger P, Mentes E, Brand K, Weissinger EM, Haubitz M, Mischak H, Herget-Rosenthal S. Urinary excretion of twenty peptides forms an early and accurate diagnostic pattern of acute kidney injury. Kidney Int. 2010 Dec;78(12):1252-62. doi: 10.1038/ki.2010.322. Epub 2010 Sep 8.
- Kistler AD, Serra AL, Siwy J, Poster D, Krauer F, Torres VE, Mrug M, Grantham JJ, Bae KT, Bost JE, Mullen W, Wuthrich RP, Mischak H, Chapman AB. Urinary proteomic biomarkers for diagnosis and risk stratification of autosomal dominant polycystic kidney disease: a multicentric study. PLoS One. 2013;8(1):e53016. doi: 10.1371/journal.pone.0053016. Epub 2013 Jan 10. Erratum In: PLoS One. 2013;8(8). doi:10.1371/annotation/9281c713-d253-4a1a-8255-92e691e77a24.
- Evan AP, Coe FL, Lingeman JE, Shao Y, Sommer AJ, Bledsoe SB, Anderson JC, Worcester EM. Mechanism of formation of human calcium oxalate renal stones on Randall's plaque. Anat Rec (Hoboken). 2007 Oct;290(10):1315-23. doi: 10.1002/ar.20580.
- Yasui T, Fujita K, Hayashi Y, Ueda K, Kon S, Maeda M, Uede T, Kohri K. Quantification of osteopontin in the urine of healthy and stone-forming men. Urol Res. 1999 Aug;27(4):225-30. doi: 10.1007/s002400050114.
- Zhang Y, Wen Z, Washburn MP, Florens L. Refinements to label free proteome quantitation: how to deal with peptides shared by multiple proteins. Anal Chem. 2010 Mar 15;82(6):2272-81. doi: 10.1021/ac9023999.
- Pieper R. Preparation of urine samples for proteomic analysis. Methods Mol Biol. 2008;425:89-99. doi: 10.1007/978-1-60327-210-0_8.
- McIlwain S, Mathews M, Bereman MS, Rubel EW, MacCoss MJ, Noble WS. Estimating relative abundances of proteins from shotgun proteomics data. BMC Bioinformatics. 2012 Nov 19;13:308. doi: 10.1186/1471-2105-13-308.
- Skates SJ, Gillette MA, LaBaer J, Carr SA, Anderson L, Liebler DC, Ransohoff D, Rifai N, Kondratovich M, Tezak Z, Mansfield E, Oberg AL, Wright I, Barnes G, Gail M, Mesri M, Kinsinger CR, Rodriguez H, Boja ES. Statistical design for biospecimen cohort size in proteomics-based biomarker discovery and verification studies. J Proteome Res. 2013 Dec 6;12(12):5383-94. doi: 10.1021/pr400132j. Epub 2013 Oct 28.
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 6409
- 2U54DK083908-06 (U.S. NIH Grant/Contract)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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