- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT07632469
mGFR vs tGFR in AKI
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
Studieoversikt
Studietype
Registrering (Antatt)
Fase
- Fase 4
Kontakter og plasseringer
Studiekontakt
- Navn: Bin Du
- Telefonnummer: 86+69155643
- E-post: dubin98@gmail.com
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
- Voksen
- Eldre voksen
Tar imot friske frivillige
Beskrivelse
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.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Diagnostisk
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Eksperimentell: intervensjonsgruppe
|
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.
|
Hva måler studien?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
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To validate the agreement of TGFR with mGFR in AKI patients at both the segmented and overall 0-12 hour levels.
Tidsramme: 12 hours
|
12 hours
|
Samarbeidspartnere og etterforskere
Sponsor
Publikasjoner og nyttige lenker
Generelle publikasjoner
- Dorshow RB, Debreczeny MP, Goldstein SL. GFR Measurement Using Transdermal Detection Methodology. J Am Soc Nephrol. 2025 Feb 7;36(8):1592-1602. doi: 10.1681/ASN.0000000639.
- Dorshow RB, Debreczeny MP, Goldstein SL, Shieh JJ. Clinical validation of the novel fluorescent glomerular filtration rate tracer agent relmapirazin (MB-102). Kidney Int. 2024 Oct;106(4):679-687. doi: 10.1016/j.kint.2024.06.012. Epub 2024 Jul 2.
- Dixon JJ, Lane K, Dalton RN, Turner C, MacPhee IAM, Chis Ster I, Philips BJ. Continuous Infusion of Low-Dose Iohexol Measures Changing Glomerular Filtration Rate in Critically Ill Patients. Crit Care Med. 2018 Mar;46(3):e190-e197. doi: 10.1097/CCM.0000000000002870.
- Erley CM, Bader BD, Berger ED, Vochazer A, Jorzik JJ, Dietz K, Risler T. Plasma clearance of iodine contrast media as a measure of glomerular filtration rate in critically ill patients. Crit Care Med. 2001 Aug;29(8):1544-50. doi: 10.1097/00003246-200108000-00008.
- Molitoris BA. Measuring glomerular filtration rate in the intensive care unit: no substitutes please. Crit Care. 2013 Sep 4;17(5):181. doi: 10.1186/cc12876.
- Inker LA, Titan S. Measurement and Estimation of GFR for Use in Clinical Practice: Core Curriculum 2021. Am J Kidney Dis. 2021 Nov;78(5):736-749. doi: 10.1053/j.ajkd.2021.04.016. Epub 2021 Sep 11.
- Dorshow RB, Friedemann J, Ross-Jones J, Johnson JR, Vitale L, Riley IR, Debreczeny MP, Harr J, Trelford LP, Goldstein SL. Accuracy of Point-of-Care Transdermal GFR Methodology. Kidney Int Rep. 2026 Jan 22;11(4):103797. doi: 10.1016/j.ekir.2026.103797. eCollection 2026 Apr.
Studierekorddatoer
Studer hoveddatoer
Studiestart (Antatt)
Primær fullføring (Antatt)
Studiet fullført (Antatt)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- k9467
Plan for individuelle deltakerdata (IPD)
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