About this trial
Acute kidney injury (AKI) and chronic kidney disease (CKD) impose a significant global health burden. Yet, no effective therapies currently exist for AKI, and only a few are available for CKD.
Despite significant effort from industry and academia, development of pharmacologic therapies for AKI and CKD has been hampered by:
Non-predictive animal models The inability to identify and prioritize human targets The limited availability of human kidney biopsy tissue A poor understanding of AKI and CKD heterogeneity Historically, AKI and CKD have been described as single, uniform diseases. However, growing consensus suggests that different disease pathways lead to different subgroups of AKI and CKD (AKIs and CKDs).
Access to human kidney biopsy tissue is a critical first step to define disease heterogeneity and determine the precise molecular pathways that will facilitate identification of specific drug targets and ultimately enable individualized care for people with AKI and CKD.
A number of research centers across the United States are collaborating to bring state-of-the-art technologies together to:
* Ethically obtain and evaluate kidney biopsies from participants with AKI or CKD * Define disease subgroups * Create a kidney tissue atlas * Identify critical cells, pathways, and targets for novel therapies
The KPMP is made up of three distinct, but highly interactive, activity groups:
* Recruitment Sites: The recruitment sites (RS) are responsible for recruiting participants with AKI or CKD into the longitudinal study and performing the kidney biopsy. * Tissue Interrogation Sites: The tissue interrogation sites (TIS) are responsible for developing and using innovative technologies to analyze the biopsy tissue. * Central Hub: The central hub is responsible for aggregating, analyzing, and visualizing the generated data and providing scientific, infrastructure, and administrative support for the KPMP consortium.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Use of glucose-lowering therapy (insulin or oral or other subcutaneous agents)
International Classification of Diseases (ICD) 9/10 diagnostic code for diabetes
Estimated glomerular filtration rate 30-59 mL/min/1.73m2 or
Estimated glomerular filtration rate greater than or equal to 30 mL/min/1.73m2 with urine albumin excretion greater than or equal to 30 mg/g creatinine (or mg/day) or
Disqualifiers
Under 18 years of age
Severe allergy to iodinated contrast
Pregnancy
Transplant recipient (includes solid transplant and bone marrow)
Trial population
The KPMP will focus on participant populations that account for large proportions of the public health burden of acute and chronic kidney diseases as evidenced by research and federal data. For CKD, high priority populations include CKD in the setting of diabetes (diabetic kidney disease, DKD) and hypertension-associated CKD (H-CKD). A special population of people with long-standing type 1 diabetes (more than 25 years) who remain free of clinically-evident DKD will also be included. For AKI, the focus will be on acute intrinsic non-glomerular disease, primarily on acute tubular necrosis (ATN). KPMP will also include a special population of patients at risk for AKI or with early AKI captured by an open (surgical) kidney biopsy performed at the time of clinically indicated laparotomy. The rationale for including this special AKI population is that AKI often occurs early in the clinical course of conditions like sepsis, major surgery and trauma.
Trial design
Cohort
Prospective
Treatments tested in this trial
Kidney Biopsy
Procedure/SurgeryA kidney biopsy is a procedure that involves taking a small piece of kidney tissue for examination with a microscope. A licensed health care provider will perform a kidney biopsy.
MRI
Other interventionImages will be acquired using 3.0T whole body scanner. The participant will undergo a series of sequences (e.g., BOLD, diffusion-weighted, ASL MRI, native T1, and fat fraction sequences). The participant will receive 20 mg of IV furosemide as a bolus. BOLD MRI sequences will be repeated 15 minutes after furosemide administration. ASL sequences are acquired using investigational protocols that are not FDA-approved. Siemens machines will use Body ASL PCASL Perfusion WIP 1023, Phillips will use Body ASL 2D PCASL Perfusion software, and GE machines will use Body ASL PCASL Perfusion software.
Retina Scan
Other interventionFundus photography, fluorescein angiography, optical coherence tomography, optical coherence tomography angiography, and ophthalmologic exam and history will take place during one retina study visit. The retina visit will take place up to 6 weeks prior to the KPMP kidney biopsy OR up to 8 weeks post-biopsy.
Treatment groups
Trial outcomes
Primary outcomes
Biopsy-related outcomes
Biopsy-related complications will be collected by KPMP study staff using standardized case report forms. Clinical utility of the biopsy results will be assessed using standardized surveys of clinical providers, and participant-reported outcomes will be assessed using standardized questionnaires. Biopsy-related outcomes data will be collected around the time of the biopsy and within the six months following procurement of the kidney biopsy.
Kidney disease progression outcomes
Longitudinal change in estimated glomerular filtration rate (eGFR): * Primary composite longitudinal outcome, defined by any of the following: * ESRD, defined as initiation of maintenance dialysis or kidney transplantation * Sustained decline in eGFR by 40% or more from baseline * Individual components of the primary composite outcome * Slope of eGFR change (from baseline to the latest value)
Kidney disease progression outcomes
Longitudinal change in urine albumin excretion defined by the following: -Slope of change in urine albumin-creatinine ratio
Kidney disease progression outcomes
Longitudinal change in urine albumin excretion defined by the following: -Change of Kidney Disease Improving Global Outcomes (KDIGO) albuminuria stage
Other outcomes
Number of Participants with Additional Outcome Measures
* All-cause mortality, defined by death from any cause and validated through linkages with the National Death Index (NDI) * Cardiovascular events, including heart failure, myocardial infarction, cerebrovascular event, transient ischemic attack, thromboembolic event, arrhythmia, and cardiac arrest * New AKI events after KPMP enrollment * Hospital admissions and discharge diagnoses after KPMP enrollment
Number of Participants with Outcomes Specific to AKI
* Duration of AKI: number of days with elevated serum creatinine above baseline * Recovery of AKI: return of serum creatinine to greater than 125% of baseline by 3 months post-biopsy * ICU admissions: admissions to any intensive care unit during hospitalization * Need for dialysis: initiation and duration of any dialysis modality (CRRT, HD, or PD) * Length of hospital stay: number of days during initial AKE episode
Sponsors and contacts
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Icahn School of Medicine at Mount Sinai
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Collaborator
University of Washington
Collaborator
University of Michigan
Collaborator
Brigham and Women's Hospital
Collaborator
Broad Institute of MIT and Harvard
Collaborator
The Cleveland Clinic
Collaborator
Columbia University
Collaborator
Indiana University
Collaborator
Johns Hopkins University
Collaborator
Joslin Diabetes Center
Collaborator
Pacific Northwest National Laboratory
Collaborator
Princeton University
Collaborator
Ohio State University
Collaborator
University of Pittsburgh
Collaborator
The University of Texas Health Science Center at San Antonio
Collaborator
University of Texas
Collaborator
Washington University School of Medicine
Collaborator
Yale University
Collaborator
Mayo Clinic
Collaborator
University of North Carolina, Chapel Hill
Collaborator
University of Illinois at Chicago
Collaborator
Vanderbilt University
Collaborator
Providence Health & Services
Collaborator
Harvard University
Collaborator
University of Arizona
Collaborator