COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC:

Get the latest research information from NIH: Menu

Non-Invasive Evaluation of Transplant Kidney Using OCT

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02084966
Recruitment Status : Completed
First Posted : March 12, 2014
Last Update Posted : March 8, 2019
Information provided by (Responsible Party):
Georgetown University

Brief Summary:
Optical coherence tomography (OCT) is a rapidly emerging imaging modality that can function as a type of "optical biopsy", providing non-invasive cross-sectional images of tissue architectural morphology in situ and in real-time. This proposal will demonstrate that OCT has the ability to provide novel and valuable histopathological information regarding donor kidneys that can be used to predict post-transplant renal function. These investigations will result in a major breakthrough in increasing the number of healthy kidneys available for transplantation by making the most efficient use of available donor kidneys, eliminating the possible use of bad donor kidneys, providing an accurate measure of expected post-transplant renal function, and allowing better distinction between post-transplant immunological rejection and ischemic-induced acute renal failure.

Condition or disease Intervention/treatment Phase
Chronic Kidney Disease Procedure: Procedure/Surgery: Transplantation: OCT of Kidney Transplant Not Applicable

Detailed Description:

What will be assessed: Kidney pathology will be assessed. Specifically, optical coherence tomography (OCT) will be used to observe the pathology of the kidney uriniferous tubules. The proximal convoluted tubules that make up most of the kidney uriniferous tubules and parenchyma in the outer cortex of the kidney (i.e., the portion of the kidney subjacent to the outer kidney capsule) are sensitive indicators of damage to the kidneys. When damaged due to ischemia (i.e., a lack of blood flow), these tubules swell and cellular debris is released into the lumens of these tubules.

Why is this data important: Damage to the kidney proximal tubules, known as acute tubular necrosis (ATN), is the most common cause of poor post-transplant kidney function following transplant. It has been shown that determining the extent of ATN is a good indicator of post-transplant renal function.

How will the data be collected: The histopathology describe above (i.e., the pathology of the kidney tubules) will be collected using optical coherence tomography (OCT). OCT is a rapidly emerging imaging modality that can function as a type of "optical biopsy", providing non-invasive cross-sectional images of tissue architectural pathology in situ and in real-time. OCT is similar to ultrasound, but uses light waves instead of sound waves to obtain high-resolution imaging. The ability of OCT of obtain high-resolution images is necessary in order to observe the pathological changes describe above (i.e., damage to the kidney tubules). Algorithms will be developed as a result of this investigation in order to assist in the prediction of ATN and post-transplant kidney function.

What factors will be measured to determine post-transplant kidney function: The factors that will be used to measure post-transplant renal function include serum creatinine, BUN and glomerular filtration rates (GFR). This data will be collected by examining the surgical and laboratory reports for each patient. The data will be collected daily for the first two weeks following transplant and biweekly for the next six months following transplant. Six months following transplant, this data will be collected every 3 months until conclusion of study (i.e., 4 years). The patient data will be stored on password-protected files on a password-protected computer. The data will be available only to the principal investigator and the co-investigators in this study. A nephrologist fellow who will report directly to the principal investigator will collect the data. The principal investigator will verify data accuracy and protocol compliance. A biostatistician who will be blinded as to patient identity will independently analyze the data. If the data is published, only the parameters listed above and related to post-transplant renal function will be reported. No names will be associated with publication of the collected kidney transplant data. The principal investigator and the biostatistician will monitor this data and any indications of potential harm to the patient will be reported immediately to the Institutional Review Board (IRB).

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 169 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Non-Invasive Evaluation of Transplant Kidney Using OCT
Study Start Date : April 2014
Actual Primary Completion Date : December 2018
Actual Study Completion Date : December 2018

Arm Intervention/treatment
Experimental: OCT Imaging
OCT imaging of the kidneys prior to and following their transplant
Procedure: Procedure/Surgery: Transplantation: OCT of Kidney Transplant
Device: Optical Coherence Tomography of Kidney Transplant

Primary Outcome Measures :
  1. Non-Invasive Evaluation of Transplant Kidney using OCT [ Time Frame: Up to 4 years ]
    The outcome from these studies is to show significance differences in the donor kidneys of the three patient populations (i.e., immediate graft function, slow graft function and delayed graft function) using OCT imaging.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria: Undergoing Kidney Transplant -

Exclusion Criteria: None


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02084966

Layout table for location information
United States, District of Columbia
Georgetown University Medical Center
Washington, District of Columbia, United States, 20007
Sponsors and Collaborators
Georgetown University
Layout table for additonal information
Responsible Party: Georgetown University Identifier: NCT02084966    
Other Study ID Numbers: R01DK094877 ( U.S. NIH Grant/Contract )
First Posted: March 12, 2014    Key Record Dates
Last Update Posted: March 8, 2019
Last Verified: March 2019
Keywords provided by Georgetown University:
Renal function
Optical Coherence Tomography
Additional relevant MeSH terms:
Layout table for MeSH terms
Kidney Diseases
Renal Insufficiency, Chronic
Urologic Diseases
Renal Insufficiency