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CompletedNCT04864847SAKURA-POCUpdated Jun 10, 2026

Clinical Validation of the RENISCHEM L-FABP POC Assay

An observational study in Acute Kidney Injury and Contrast-induced Nephropathy, sponsored by Hikari Dx, Inc.. Completed at 6 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-06-10.

Sponsored by Hikari Dx, Inc. · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
382
Ages
18 Years and older
Sex
All
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Study summary

This study will involve measurement of levels of a novel urinary biomarker of renal ischemia, L-FABP. The purpose of the study is to perform a clinical validation of the ability of L-FABP measurements in urine using the RENISCHEM L-FABP POC Test to predict the development of AKI within 2 days following cardiac and vascular catheterization procedures involving exposure to radiocontrast media.

Read the detailed description

This study will validate the ability of the RENISCHEM L-FABP POC test to predict AKI risk in patients undergoing cardiac catheterization and receiving iodinated contrast medium. Contrast medium is known to be both vasoconstrictive and chemotoxic, which can lead to renal ischemia and, ultimately, AKI. Infusion of radiographic contrast agents, with the associated increases in osmotic load and viscosity, increases hypoxia of the renal medulla and increases renal free radical production through post-ischemic oxidative stress. Earlier identification of contrast medium-induced acute kidney injury (CI-AKI) risk can facilitate improved management of patients to prevent AKI, for example, through selection of alternative imaging methods or contrast agents.

Subjects will be recruited prospectively based on pre-specified enrollment criteria. Blood and urine samples will be collected after enrollment and at several timepoints, and various tests will be performed, including point-of-care L-FABP measurements on urine samples.

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Conditions studied

  • Acute Kidney Injury
  • Contrast-induced Nephropathy

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Keywords

  • L-FABP
  • Point of Care
03

In context

Acute Kidney Injury

1,595 studies on the registry are indexed under Acute Kidney Injury; 371 are open to participants now.

This study's enrollment of 382 is above the median of 150 across 773 observational studies indexed under Acute Kidney Injury.

Browse Acute Kidney Injury studies →

Lead sponsor

Hikari Dx, Inc. is the lead sponsor of 4 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

The study population will include patients recruited from a healthcare setting that will be undergoing cardiac or vascular interventional procedures that are at elevated risk for developing AKI. At least 50% of the enrolled population will be undergoing an interventional procedure such as percutaneous coronary intervention (PCI), transcatheter aortic valve replacement (TAVR) or transcatheter aortic valve implantation (TAVI).

Inclusion criteria

  • Patients age 18 or older on the day of the procedure
  • Undergoing cardiac or vascular interventional procedures for diagnostic angiography, coronary intervention, TAVR or TAVI, with planned use of radiocontrast media within the next 30 days
  • Able to provide informed consent
  • Available to participate in follow-up visits
  • eGFR \< 45 within the last 90 days, or
  • eGFR \< 60 within the last 90 days with at least one (1) of the following risk factors:
  • Diabetes
  • Heart failure (acute or chronic)
  • Anemia (hemoglobin \< 12 g/dL for females and \< 13 g/dL for males) within the last 90 days
  • Age > 75 on the day of the procedure

Exclusion criteria

Exclusion Criteria:

  • Patient on dialysis or with eGFR \< 15 within the last 30 days
  • History of renal transplant
  • Current use of immunosuppressive drugs other than prednisone \< 10 mg/day
  • Current clinically significant infection (including HIV, hepatitis)
  • Presence of KDIGO Stage 1, 2, or 3 AKI within the last 7 days, according to KDIGO criteria
  • Known or suspected nephritic or nephrotic syndrome.
  • A current post-renal etiology of renal impairment
  • Known allergy or hypersensitivity to radiographic contrast dye that cannot be pre-medicated
  • Females that are known to be pregnant or nursing
  • Participation within the last 30 days in another clinical trial involving use of any drug known to affect AKI and/or device known to affect AKI
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
382 participants (actual)
Patient registry
No
Biospecimen retention
Samples without dna

Interventions

  • Diagnostic testRENISCHEM L-FABP POC Test

    Point-of-care test cassette with quantitative reader used for the measurement of L-type fatty acid binding protein (L-FABP) in human urine specimens.

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What researchers measure

Primary outcomes

  1. Development of acute kidney injury

    AKI defined as stage 1, 2, or 3 using the KDIGO criteria

    Time frame: Within 2 days after a cardiac or vascular catheterization procedure involving the use of contrast media

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Study locations

6 sites
  • Chandler Regional Medical Center
    Chandler, Arizona 85224, United States
  • John Muir Health
    Concord, California 94520, United States
  • Clearwater Cardiovascular Consultants
    Clearwater, Florida 33756, United States
  • University of Florida at Jacksonville
    Jacksonville, Florida 32209, United States
  • Sinai Hospital of Baltimore
    Baltimore, Maryland 21215, United States
  • University of Oklahoma
    Oklahoma City, Oklahoma 73104, United States
08

References and documents

Publications

  • Noiri E, Doi K, Negishi K, Tanaka T, Hamasaki Y, Fujita T, Portilla D, Sugaya T. Urinary fatty acid-binding protein 1: an early predictive biomarker of kidney injury. Am J Physiol Renal Physiol. 2009 Apr;296(4):F669-79. doi: 10.1152/ajprenal.90513.2008. Epub 2008 Nov 19. PubMed 19019918 ↗
  • Yamamoto T, Noiri E, Ono Y, Doi K, Negishi K, Kamijo A, Kimura K, Fujita T, Kinukawa T, Taniguchi H, Nakamura K, Goto M, Shinozaki N, Ohshima S, Sugaya T. Renal L-type fatty acid--binding protein in acute ischemic injury. J Am Soc Nephrol. 2007 Nov;18(11):2894-902. doi: 10.1681/ASN.2007010097. Epub 2007 Oct 17. PubMed 17942962 ↗
  • Fujita D, Takahashi M, Doi K, Abe M, Tazaki J, Kiyosue A, Myojo M, Ando J, Fujita H, Noiri E, Sugaya T, Hirata Y, Komuro I. Response of urinary liver-type fatty acid-binding protein to contrast media administration has a potential to predict one-year renal outcome in patients with ischemic heart disease. Heart Vessels. 2015 May;30(3):296-303. doi: 10.1007/s00380-014-0484-9. Epub 2014 Feb 20. PubMed 24554034 ↗
  • Kamijo-Ikemori A, Hashimoto N, Sugaya T, Matsui K, Hisamichi M, Shibagaki Y, Miyake F, Kimura K. Elevation of urinary liver-type fatty acid binding protein after cardiac catheterization related to cardiovascular events. Int J Nephrol Renovasc Dis. 2015 Aug 18;8:91-9. doi: 10.2147/IJNRD.S88467. eCollection 2015. PubMed 26316797 ↗
  • Manabe K, Kamihata H, Motohiro M, Senoo T, Yoshida S, Iwasaka T. Urinary liver-type fatty acid-binding protein level as a predictive biomarker of contrast-induced acute kidney injury. Eur J Clin Invest. 2012 May;42(5):557-63. doi: 10.1111/j.1365-2362.2011.02620.x. Epub 2011 Nov 10. PubMed 22070248 ↗
  • Nakamura T, Sugaya T, Node K, Ueda Y, Koide H. Urinary excretion of liver-type fatty acid-binding protein in contrast medium-induced nephropathy. Am J Kidney Dis. 2006 Mar;47(3):439-44. doi: 10.1053/j.ajkd.2005.11.006. PubMed 16490622 ↗

Individual participant data

Plan to share: No

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 10, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04864847
Lead sponsor
Hikari Dx, Inc.
Collaborators
Timewell Medical Co., Ltd.
Responsible party
Sponsor
First posted
Apr 29, 2021
Start date
Oct 1, 2021
Primary completion
Feb 5, 2026
Completion
Feb 5, 2026
Last update
Jun 10, 2026

Study contacts

Peter McCullough
principal investigator · Independent

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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