mGFR vs tGFR in AKI

June 2, 2026 updated by: Bin Du

Comparison of Agreement Between mGFR and tGFR in ICU Patients With Acute Kidney Injury

The goal of this study is to learn if the TGFR device (which uses telmapirazin to continuously measure real-time GFR) works to provide accurate and dynamic kidney function assessment in critically ill adults with acute kidney injury (AKI). It will also learn how tGFR compares with the gold standard measured GFR (mGFR) and other commonly used estimate methods. The main questions it aims to answer are:

  • Does tGFR show good agreement with mGFR over the 0-12 hour period in AKI patients?
  • How do tGFR, mGFR, 4-hour creatinine clearance, kinetic GFR (keGFR), and CKD-EPI eGFR compare across different AKI stages?
  • What are the bias and variability of each method over time?

Researchers will compare tGFR to mGFR (iohexol clearance) to see if tGFR is a reliable alternative for bedside, continuous GFR monitoring. They will also compare tGFR against 4-hour creatinine clearance, keGFR, and eGFR to assess consistency across AKI stages.

Participants will:

  • Wear a single-use tGFR sensor patch on the chest for continuous GFR monitoring
  • Receive iohexol injection for mGFR measurement (gold standard)
  • Provide blood and urine samples for 4-hour creatinine clearance and other tests
  • Undergo repeated GFR assessments over the 12-hour study period

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

50

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • CU stay ≤ 72 hours; meets KDIGO AKI criteria; age 18-85 years; able to complete blood/urine collection and monitoring

Exclusion Criteria:

  • prior history of CKD stage 4 or higher; anuria; recent contrast agent exposure or kidney transplant history; pregnancy or breastfeeding; expected survival < 24 hours.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: intervention group
Device: transdermal GFR
The tGFR detection system comprised 3 distinct components as follows: (i) the fluorescent tracer agent, Lumitrace, (ii) a single small module containing both the light source and photo detector attached to the upper chest area using a biocompatible adhesive, and (iii) a display monitor that digitizes the acquired fluorescent intensity data and contains the algorithms to convert these data to GFR. Background endogenous fluorescence was acquired after attachment of the module to the chest, followed by a 7 ml i.v. bolus dose of Lumitrace. The monitor shows the fluorescence intensity as it is being acquired and then displays the determined tGFR after data acquisition is completed.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
To validate the agreement of TGFR with mGFR in AKI patients at both the segmented and overall 0-12 hour levels.
Time Frame: 12 hours
12 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Bin Du

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

June 8, 2026

Primary Completion (Estimated)

December 31, 2026

Study Completion (Estimated)

May 5, 2027

Study Registration Dates

First Submitted

June 2, 2026

First Submitted That Met QC Criteria

June 2, 2026

First Posted (Actual)

June 8, 2026

Study Record Updates

Last Update Posted (Actual)

June 8, 2026

Last Update Submitted That Met QC Criteria

June 2, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • k9467

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

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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