CompletedPhase 1ACTRN12624000137594

A phase 1, Randomised, placebo-controlled, single-blind, single-ascending dose study, to determine the safety and tolerability of intravenous Gemini in healthy volunteers.


Sponsor

Revelation Biosciences Sub Inc

Enrollment

40 participants

Start Date

Mar 15, 2024

Study Type

Interventional

Conditions

Summary

Gemini is being developed as a potential new drug as a treatment for reducing the incidence, duration, and severity of acute kidney injury following cardiac surgery and for surgical site infection. The purpose of this research study is to evaluate safety, tolerability, how the body uses the drug and how the drug affects the body in healthy participants. The study drug works by stimulating a protein called toll-like receptor, which plays an important role in activating the natural immune response. The immune system is the body's first line of defence against invaders such as viruses, bacteria, parasites or toxins entering the body, or to detect wounds in trauma.


Eligibility

Sex: Both males and femalesMin Age: 18 YearssMax Age: 55 Yearss

Inclusion Criteria15

  • Healthy volunteers will be included in the study if they satisfy all the following criteria:
  • Must have given written informed consent before any study-related activities are carried out and must be able to understand the full nature and purpose of the trial, including possible risks and adverse effects.
  • Adult volunteers, 18 to 55 years of age, inclusive, at Screening.
  • Is medically healthy (in the opinion of the PI or identified Sub-I(s)), as determined by pre-study medical history, and without clinically significant abnormalities including:
  • Physical examination without any clinically relevant findings
  • Systolic blood pressure in the range of 90 to 160 mmHg and diastolic blood pressure in the range of 50 to 95 mmHg after 5 minutes in a sitting, supine or semi-supine position
  • Heart rate (HR) in the range of 45 to 100 bpm after 5 minutes rest in a sitting, supine or semi-supine position
  • Body temperature (tympanic), between 35.5°C and 37.7°C
  • Electrocardiogram (ECG) without clinically significant abnormalities including QT interval corrected for Fredericia (QTcF) <450 msec for male subjects and <470 msec for female subjects
  • No clinically significant findings in serum chemistry, haematology and urinalysis tests
  • Non-smoker, non-tobacco user and non-nicotine product user or a former smoker/user (has not smoked, vaped or used tobacco/nicotine products in the 6 months prior to dosing.
  • Participant must have a Body Mass Index (BMI) greater than or equal to 18.0 kg/m2 and less than or equal to 32.0 kg/m2 at screening.
  • Female participants must be of non-childbearing potential or using a medically acceptable contraceptive regimen from screening until 30 days post dose.
  • Male participants must be surgically sterile or using a medically acceptable contraceptive regimen from screening until 90 days post dose.
  • Participant must be willing and able to comply with the study schedule, restrictions, and requirements.

Exclusion Criteria21

  • Volunteers will be excluded from the study if there is evidence of any of the following:
  • Known hypersensitivity to any of the study drug ingredients.
  • Concomitant disease, disability, or condition which may interfere with the conduct of the study, or which would, in the opinion of the PI or identified Sub-I(s), pose an unacceptable risk to the participants in this study, including, but not limited to alcohol dependency or abuse (in the past 2 years defined as >21 units of alcohol per week for males and >14 units of alcohol per week for females. Where 1 unit = 360mL of beer, 150mL of wine, or 45mL of spirits), drug dependency or abuse (in the past 2 years), or previously diagnosed psychiatric disease (stable depression is acceptable).
  • Positive drugs of abuse test, cotinine test or alcohol breath test results at the screening and/or Day -1.
  • Do not have suitable veins for multiple venipunctures/cannulations as assessed by the PI or identified Sub-I(s) at screening.
  • Evidence of renal impairment at screening, as indicated by an estimated creatinine clearance of <80 mL/min using the Cockcroft-Gault equation at screening and Day -1.
  • Abnormal liver function tests as indicated by alanine aminotransferase (ALT) > 1.5x upper limit of normal (ULN), aspartate aminotransferase (AST) > 1.5 x ULN or total bilirubin >1.5 x ULN at screening and Day -1.
  • Verbal history of risk factors or symptoms for SARS-CoV-2 at Screening and Day -1.
  • Have hepatitis B, hepatitis C or Human Immunodeficiency Virus (HIV-1 or HIV-2) at screening.
  • Verbal history of being immunocompromised due to disease or medication (e.g., cancer immunosuppressive therapy), hypertension, coronary artery disease with history of stent or graft, heart failure NYHA class 2 or greater, or diabetes at screening.
  • Used any prescription medications within 14 days, or over-the-counter medications within 7 days of Day -1, with the exception of contraceptives or hormone replacement therapy for female participants and occasional paracetamol use (at the discretion of the PI or identified Sub-I(s)).
  • Used vitamins, dietary or herbal supplement, or nutritional supplement within 7 days of Day -1.
  • Administration of systemic antibiotics or antivirals within 7 days of Day -1 (excluding topical/external use of antibiotics).
  • History of surgery or hospitalization within 3 months of Day -1, or surgery planned during the study.
  • Pregnant or breast-feeding women.
  • Participant has received any immunoglobulins and/or blood products within 3 months of Day -1.
  • Participant has donated blood or plasma within 30 days prior to screening or had a loss of whole blood of more than 500ml within the 30 days prior to screening.
  • Participant has had acute respiratory illness within 30 days of Day -1.
  • Participant has received treatment with any investigational product in any clinical study within 30 days of Day -1 or five half-lives, whichever is longer.
  • Participant has received a vaccination within 30 days of Day -1.
  • Participant is unwilling or unable to comply with the study protocol requirements.

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Interventions

This study will enrol up to 40 participants in up to 5 cohorts, the 5th Cohort (Cohort 4b) will be a repeat dose of Cohort 4a. The dose administered in each cohort will be: Cohort 1 - 30ug Cohort 2

This study will enrol up to 40 participants in up to 5 cohorts, the 5th Cohort (Cohort 4b) will be a repeat dose of Cohort 4a. The dose administered in each cohort will be: Cohort 1 - 30ug Cohort 2 - 90ug Cohort 3 - 270ug Cohort 4a - 540ug Cohort 4b - 540ug or maximum tolerated dose (MTD) Each cohort will consist of 8 unique participants (6 assigned to Gemini), sentinel dosing will be conducted in cohorts 1, 2, 3 and 4a. Sentinal dosing will not be required for Cohort 4b since the dose is a repeat of Cohort 4 a. Additional participants (up to 8) may be necessary if a dose limiting toxicity (DLT) occurs. All participants will be screened for eligibility before enrolment. Screened participants who provide written informed consent and meet all eligibility criteria will be admitted to the clinical research unit (CRU) on Day -1. On Day 1, each study participant will receive a single intravenous dose via syringe pump for at least 10 minutes but not longer than 15 minutes. Two participants in each cohort, each participant will receive a single intravenous (sentinel) dose. If either participant experiences a dose DLT, or meets the criteria for stopping doses prior to Day 2/Hour 24, the cohort will be stopped. Sentinel dosing will not be required for Cohort 4b since the dose is a repeat of Cohort 4a. Participants will be confined on Day -1 and discharged on Day 2 after all study procedures are complete. All other visits will be conducted as an outpatient or via telephone. The study drug will be administered to eligible participants under the supervision of the PI or identified Sub-I(s). The pharmacist or designee will maintain records of investigational product receipt, preparation, and dispensing, including the applicable lot numbers, and total drug administered. Any discrepancy between the assigned dose and dose administered, as well as the reason for the discrepancy, are to be recorded in the source documents and the eCRF.


Locations(1)

Linear Clinical Research - Nedlands

WA, Australia

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ACTRN12624000137594