- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04508049
A Study to Evaluate Renal Fibrosis Using MRI Techniques
Quantitative Magnetization Transfer MRI for Evaluation of Renal Fibrosis
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Renal fibrosis is a final pathway and important biomarker of injury common to most forms of kidney disease. For example, in renal vascular disease (RVD) progressive renal fibrosis may induce kidney injury and hypertension. Early identification of fibrosis and adequate intervention may slow down renal disease progression, but adequate noninvasive strategies to detect and quantify renal fibrosis are yet to be identified.
Magnetization transfer imaging (MTI) magnetic resonance imaging (MRI) is a novel noninvasive method to evaluate the tissue macromolecular composition. The investigators have demonstrated that MTI can assess stenotic kidney fibrosis in murine and swine models of unilateral RVD. However, the clinical utility of MT-MRI to assess renal fibrosis is currently limited, because it is inherently semi-quantitative. In contrast, quantitative MT (qMT), based on biophysical compartment models, provides more objective measurement of tissue MT properties. A model fitting of MR signal acquired with various MT pulse amplitudes and offset frequencies, combined with scan-specific B0/B1/T1 maps, give rise to a more complete definition of tissue parameters, including a "bound pool fraction", a direct measure of the macromolecular content in tissue.
The hypothesis underlying this proposal is that qMT would reliably detect development of renal fibrosis at both 1.5 T and 3.0 T in subjects with RVD. To test this hypothesis, which is supported by strong preliminary data, the investigators will initially develop, optimize, and validate qMT for evaluation of fibrosis in the post-stenotic swine kidney. The investigators will correlate qMT-derived renal fibrosis with reference standards, as well as with single-kidney hemodynamics, function, and oxygenation, quantified using cutting-edge multi-detector CT (MDCT) and MRI techniques. The investigators will then determine the ability of qMT to predict renal recovery in pigs with RVD undergoing revascularization. Further, they will perform a pilot study to test the ability of qMT to quantify fibrosis in the post-stenotic human kidney, in comparison to innovative biomarkers of renal dysfunction and tissue damage.
Three specific aims will test the hypotheses: Specific Aim 1: qMT in stenotic swine kidneys is feasible, reliable, and reproducible at 1.5 and 3.0 T. Specific Aim 2: qMT predicts renal recovery potential in response to percutaneous transluminal renal angioplasty (PTRA). Specific Aim 3: qMT in stenotic human kidneys is feasible, reproducible, and predicts recovery.
The proposed studies may therefore establish a reliable, noninvasive, and clinically feasible strategy to quantify kidney fibrosis, a key biomarker for renal outcomes and therapeutic success.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Steph DiRenzo
- Phone Number: 507-422-2044
- Email: DiRenzo.Stephany@mayo.edu
Study Locations
-
-
Minnesota
-
Rochester, Minnesota, United States, 55905
- Recruiting
- Mayo Clinic in Rochester
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Between ages 40 and 80 years old.
- Patients with hypertension (BP>140/90 mmHg) and/or requirement for two or more antihypertensive medications for more than 4 weeks.
- Serum creatinine under 2.2 and 2.0 mg/dL for men and women, respectively (Caucasians). Values for African-American subjects are slightly higher (2.4 mg/dL, males; 2.1 mg/dL females).
- No contraindications to angiography: severe contrast allergy.
- No contraindications to no-contrast MR evaluations: e.g. pacemaker or magnetically active metal fragments, claustrophobia.
- Patients have the ability to comply with protocol
- Patients are competent and able to provide written informed consent
Exclusion Criteria:
- Patient has serum creatinine >2.2 mg/dL for men and >2.0 mg/dL for women (Caucasians); >2.4 mg/dL for men and >2.1 mg/dL for women (African American).
- RVD in a solitary kidney
- Patients have clinically significant medical conditions within the prior six months: e.g. myocardial infarction, congestive heart failure, stroke, that would, in the opinion of the investigators, compromise the safety of the patient.
- Uncontrolled hypertension (Systolic BP >180 mmHg despite therapy).
- Diabetes requiring insulin or oral hypoglycemic medications.
- Evidence of hepatitis B or C, or HIV infection.
- Requirement for potentially nephrotoxic drugs; e.g., non-steroidal anti-inflammatory drugs.
- Cardiac ejection fraction less than 30%.
- History of deep venous thrombosis within 3 months of enrollment.
- Kidney transplant.
- Pacemaker, implantable defibrillator or other contraindication to MRI
- Inability to comply with breath-hold for 20 seconds
- Any active malignancy and undergoing therapy
- Patients are pregnant.
- Kidney or ureteric stone
- Another known acute or chronic kidney disease
- Federal medical center inmates.
- Latex allergy
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Screening
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Early identification of fibrosis.
A pilot study to test the ability of qMT to quantify fibrosis in the post-stenotic human kidney, in comparison to innovative biomarkers of renal dysfunction and tissue damage.
We will pursue the Specific Aim that qMT in stenotic human kidneys is feasible and reproducible.
|
The hypothesis underlying this proposal is that qMT would reliably detect development of renal fibrosis at both 1.5T and 3.0T in subjects with RVD.
Patients will be studied with MRI (for fibrosis) and CT (for renal function).
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Fibrosis assessed by qMT-MRI in the stenotic kidney and contralateral kidneys
Time Frame: Baseline
|
A significant difference in qMT bound pool fraction (f, %) in the stenotic compared to the contralateral kidney in RVD patients.
|
Baseline
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Fibrosis assessed by qMT-MRI compared to stenotic kidney function
Time Frame: Baseline
|
A significant correlation between qMT bound pool fraction (f, %) with function (SK-GFR) and oxygenation (SK-R2*) in the stenotic kidney.
|
Baseline
|
Fibrosis assessed by qMT-MRI compared to stenotic kidney injury markers
Time Frame: Baseline
|
A significant correlation between qMT bound pool fraction (f, %) with levels of renal injury markers: Neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecular (KIM)-1, lactate dehydrogenase (LDH)], as well as urinary levels of extracellular vehicles (EVs) (measured by flow cytometry, %) originating from renal microvessels.
|
Baseline
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Lilach O Lerman, MD, PhD, Mayo Clinic
Publications and helpful links
Helpful Links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
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
- 19-008413
- R01DK122734 (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
product manufactured in and exported from the U.S.
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.
Clinical Trials on Hypertension
-
National Taiwan University Hospital Hsin-Chu BranchRecruitingHypertension,Essential | Hypertension, MaskedTaiwan
-
University of Alabama at BirminghamTroy UniversityCompletedHypertension | Hypertension, Resistant to Conventional Therapy | Uncontrolled Hypertension | Hypertension, White CoatUnited States
-
BayerCompletedPrimary HypertensionChina
-
Columbia UniversityAgency for Healthcare Research and Quality (AHRQ)Active, not recruitingWhite Coat Hypertension | Hypertension,EssentialUnited States
-
Addpharma Inc.Completed
-
Universidade Federal de Santa MariaCompletedHealthy Volunteers | Hypertension, EssentialBrazil
-
Sheffield Teaching Hospitals NHS Foundation TrustUniversity of SheffieldCompletedIdiopathic Pulmonary Arterial Hypertension | Chronic Thromboembolic Pulmonary HypertensionUnited Kingdom
-
China Academy of Chinese Medical SciencesGuang'anmen Hospital of China Academy of Chinese Medical SciencesCompletedHypertension, Resistant to Conventional Therapy | Primary HypertensionChina
-
Cytos Biotechnology AGCompletedMild Essential Hypertension | Moderate Essential HypertensionSwitzerland
Clinical Trials on qMT-MRI to detect fibrosis.
-
Mayo ClinicTerminatedEosinophilic EsophagitisUnited States
-
AHS Cancer Control AlbertaCross Cancer InstituteWithdrawnLocally Advanced Cervical Cancer | Integrated MRI Based RT as Standard of Care
-
Sunnybrook Health Sciences CentreRecruiting
-
Tel-Aviv Sourasky Medical CenterUnknownIdiopathic FallersIsrael
-
Mayo ClinicAnumana, Inc.CompletedCardiac DiseaseUnited States
-
University Hospital, Strasbourg, FranceWithdrawn
-
Innovis LLCExact Sciences CorporationRecruiting
-
Hillel Yaffe Medical CenterNot yet recruiting
-
Idoven 1903 S.L.Spanish Society of Cardiology; Fundación de Investigación en Red en Enfermedades...RecruitingCardiomyopathies | Cardiac Arrest | Sudden Cardiac Death | Cardiac ArrhythmiasSpain
-
Washington University School of MedicineCystic Fibrosis FoundationCompletedCystic FibrosisUnited States