Effect of RBT-1 on Preconditioning Response Biomarkers in Subjects Undergoing CABG and/or Cardiac Valve Surgery

NCT ID: NCT04564833

Last Updated: 2024-04-15

Study Results

Results available

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

152 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-08-04

Study Completion Date

2023-02-03

Brief Summary

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The purpose of this study is to evaluate the effect of RBT-1 (stannous protoporphyrin \[SnPP\]/iron sucrose \[FeS\]) on preconditioning response biomarkers in subjects who are at risk for AKI following cardiac surgery.

Detailed Description

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Conditions

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AKI

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Subjects will be randomized 1:1:1 to low dose RBT-1, high dose RBT-1, and placebo
Primary Study Purpose

PREVENTION

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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Low Dose RBT-1

Single IV infusion prior to cardiac surgery

Group Type EXPERIMENTAL

Low Dose RBT-1

Intervention Type DRUG

intravenous administration

High Dose RBT-1

Single IV infusion prior to cardiac surgery

Group Type EXPERIMENTAL

High Dose RBT-1

Intervention Type DRUG

intravenous administration

Placebo

Single IV infusion prior to cardiac surgery

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

intravenous administration

Interventions

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Low Dose RBT-1

intravenous administration

Intervention Type DRUG

High Dose RBT-1

intravenous administration

Intervention Type DRUG

Placebo

intravenous administration

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. Male or female subjects ≥18 years of age at Screening.
2. Able and willing to comply with all study procedures.
3. Stable kidney function per Investigator assessment and no known episodes of AKI during the preceding 4 weeks.
4. Scheduled to undergo non-emergent coronary and/or valve surgery(ies) requiring cardiopulmonary bypass, including:

* CABG alone;
* Combined CABG surgery/repair of 1 or more cardiac valves;
* Cardiac valve(s) replacement or repair alone.
5. Females and males of childbearing potential must agree to use 2 forms of contraception, with at least 1 being a barrier method, or abstain from sexual activity for 30 days following study drug administration.
6. Male subjects must agree not to donate or sell sperm for 30 days following study drug administration.

Exclusion Criteria

1. Presence of AKI (KDIGO criteria) at the time of Screening.
2. Surgery to be performed without cardiopulmonary bypass.
3. Surgery to be performed under conditions of circulatory arrest or hypothermia with rectal temperature \<28°C (82.4°F).
4. eGFR ≤20 mL/min/1.73m2 or need for dialysis.
5. Surgery for aortic dissection or to correct a major congenital heart defect.
6. Administration of iodinated contrast media within 24 hours prior to cardiac surgery or evidence of contrast-induced nephropathy prior to cardiac surgery.
7. Cardiogenic shock or hemodynamic instability within the 24 hours prior to surgery and requirement for inotropes or vasopressors or other mechanical devices, such as intra-aortic balloon counter-pulsation.
8. Requirement for any of the following within 7 days prior to cardiac surgery:

* Defibrillator or permanent pacemaker;
* Mechanical ventilation;
* Intra-aortic balloon counter-pulsation;
* Left ventricular assist device;
* Other forms of mechanical circulatory support.
9. Known history of cancer within the past 2 years, except for carcinoma in situ of the cervix or adequately treated basal cell carcinoma of the skin.
10. Known or suspected sepsis at time of Screening or confirmed or treated endocarditis within 30 days prior to cardiac surgery.
11. Other current active infection requiring systemic antibiotic treatment.
12. Inadequate hepatic function, defined as total bilirubin or alanine aminotransferase or aspartate aminotransferase \>2X the upper limit of normal at time of Screening or Child Pugh Class C liver disease or higher.
13. Any congenital coagulation disorder.
14. Asplenia (anatomic or functional).
15. History of photosensitivity or active skin disease that, in the opinion of the Investigator, could be worsened by RBT-1.
16. Known hypersensitivity or previous anaphylaxis to SnPP or any tin-based product.
17. Serum ferritin \>500 ng/mL or those who have received IV iron within 28 days of Screening.
18. Pregnancy or lactation.
19. Treatment with an investigational drug or participation in an interventional study within 30 days prior to administration of study drug.
20. In the opinion of the Investigator, any disease processes or confounding variables that would inappropriately alter the outcome of the study.
21. Inability to comply with the requirements of the study protocol.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Renibus Therapeutics, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Heart Center Research, LLC

Huntsville, Alabama, United States

Site Status

Keck Hospital of USC

Los Angeles, California, United States

Site Status

Santa Barbara Cottage Hospital

Santa Barbara, California, United States

Site Status

Stanford University Medical Center

Stanford, California, United States

Site Status

Yale University School of Medicine

New Haven, Connecticut, United States

Site Status

MedStar Health Research Institute, Inc.

Washington D.C., District of Columbia, United States

Site Status

University of Chicago Hospital Anesthesia and Critical Care

Chicago, Illinois, United States

Site Status

Indiana University Health Southern Indiana

Bloomington, Indiana, United States

Site Status

Lutheran Medical Group

Fort Wayne, Indiana, United States

Site Status

Brigham and Women's Hospital

Boston, Massachusetts, United States

Site Status

McLaren Greater Lansing

Lansing, Michigan, United States

Site Status

MyMichigan Medical Center

Midland, Michigan, United States

Site Status

Mayo Clinic Rochester

Rochester, Minnesota, United States

Site Status

Dartmouth-Hitchcock Medical Center

Lebanon, New Hampshire, United States

Site Status

New York Presbyterian-Queens

Flushing, New York, United States

Site Status

Columbia University Irving Medical Center

New York, New York, United States

Site Status

Rochester General Hospital Center for Clinical Research

Rochester, New York, United States

Site Status

University of Texas Southwestern Medical Center

Dallas, Texas, United States

Site Status

Gold Cost University Hospital & Health Services

Southport, Queensland, Australia

Site Status

Flinders Medical Centre

Bedford Park, South Australia, Australia

Site Status

Monash Medical Centre

Clayton, Victoria, Australia

Site Status

The Alfred Hospital

Melbourne, Victoria, Australia

Site Status

St-John Regional Hospital

Saint John, New Brunswick, Canada

Site Status

Hamilton Health Sciences Corporation

Hamilton, Ontario, Canada

Site Status

Institut Universitaire de Cardiologie et de Pneumologie de Québec

Québec, Quebec, Canada

Site Status

Countries

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United States Australia Canada

References

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Lamy A, Chertow GM, Jessen M, Collar A, Brown CD, Mack CA, Marzouk M, Scavo V, Washburn TB, Savage D, Smith J, Bennetts J, Assi R, Shults C, Arghami A, Butler J, Devereaux PJ, Zager R, Wang C, Snapinn S, Browne A, Rodriguez J, Ruiz S, Singh B; of START Investigators. Effects of RBT-1 on preconditioning response biomarkers in patients undergoing coronary artery bypass graft or heart valve surgery: a multicentre, double-blind, randomised, placebo-controlled phase 2 trial. EClinicalMedicine. 2024 Jan 8;68:102364. doi: 10.1016/j.eclinm.2023.102364. eCollection 2024 Feb.

Reference Type RESULT
PMID: 38586479 (View on PubMed)

Provided Documents

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Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Related Links

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https://pubmed.ncbi.nlm.nih.gov/38586479/

Effects of RBT-1 on preconditioning response biomarkers in patients undergoing coronary artery bypass graft or heart valve surgery: a multicentre, double-blind, randomised, placebo-controlled phase 2 trial

Other Identifiers

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REN-004

Identifier Type: -

Identifier Source: org_study_id

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