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A Study to Evaluate SGB-3403 in Healthy Volunteers

A Phase 1, Randomized, Double-Blind, Placebo-Controlled, Single Ascending Dose study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Subcutaneously Administered SGB-3403 in Healthy Volunteers

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12623000439640
Enrollment
13
Registered
2023-05-01
Start date
2023-05-19
Completion date
2023-06-14
Last updated
2024-04-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This is a Randomized, Double-blind, Placebo-controlled, Single Ascending Dose (SAD) Study evaluating the safety, tolerability, Pharmacokinetics and Pharmacodynamics of SGB-3403 subcutaneously administered in Healthy Subjects. The primary purpose of this study is to evaluate the safety and tolerability of SGB-3403 when administered subcutaneously as a single ascending dose in healthy volunteers. The secondary purpose of this study is to characterize and evaluate the pharmacokinetics and pharmacodynamic effect of SGB-3403 following subcutaneous administration. The SAD phase will enroll 37 healthy participants to be split into 5 cohorts. Cohort 1 will comprise 5 subjects (3 active, 2 placeboes) whilst the remaining 4 cohorts of the SAD phase will consist of 8 participants (6 active, 2 placeboes). Single doses of 30, 100, 300, 500, and 800 mg of SBG-3403 administered subcutaneously will be evaluated. Participants will complete a total of 3 overnight stays [admission on D-1 to post-dose on D3, followed by 9 follow-up visits on Day 5, Day 8, Day 15, Day 22, Day 29, Day 43, Day 57, Day 71, and Day 85, then every 4 weeks until LDL-C level returns to = 80% of baseline, but not exceed 180 days after the last study drug administration.. Each cohort commences only if previously collected data, including PK data (if available), does not highlight safety concerns after consultation with the Safety Review Committee (SRC). Following the starting dose of SGB-3403, decisions regarding dose escalation will be based on safety and tolerability assessments, PK data (if available), and reviewed SRC. Safety assessments will include monitoring of Adverse Events (AEs), vital signs (blood pressure, pulse rate, respiratory rate, and body temperature), clinical laboratory findings, 12-lead electrocardiograms (ECGs), and physical examination.

Interventions

Treatment: Drugs - SGB-3403 Other interventions - Placebo 4 Cohorts: 30mg, 100mg, 300mg, 500mg and 800mg The duration of administration: single dose SGB-3403 will be administered via subcutaneous injection by a registered nurse The used and/or partially used vials can be disposed of per local practice. If the used and/or partially used vials cannot be disposed of at the site, they will be returned, along with the unused vials, to the sponsor or its agent after receipt of written authorization f

Treatment: Drugs - SGB-3403 Other interventions - Placebo 4 Cohorts: 30mg, 100mg, 300mg, 500mg and 800mg The duration of administration: single dose SGB-3403 will be administered via subcutaneous injection by a registered nurse The used and/or partially used vials can be disposed of per local practice. If the used and/or partially used vials cannot be disposed of at the site, they will be returned, along with the unused vials, to the sponsor or its agent after receipt of written authorization from the Sponsor.

Sponsors

Sanegene Bio Australia Pty Ltd
Lead SponsorCommercial sector/Industry

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
All
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

1. Male and female subjects aged 18 to 55 years are included. 2. Body mass index between 18 and 32 kg/m2, inclusive. 3. COVID-19 test negative before being admitted to the clinical study site. 4. Subjects and partners must agree to use 2 methods of highly effective contraception from signing informed consent until completion of the follow-up visit or postdose 90 days (whichever is longer).

Exclusion criteria

1. The positive result of hepatitis B surface antigen (HBsAg), hepatitis C virus antibody (HCV Ab), human immunodeficiency virus (HIV) antibody, or syphilis at screening. 2. Alanine aminotransferase (ALT), total bilirubin (TBIL), aspartate aminotransferase (AST), alkaline phosphatase (ALP), or gamma-glutamyl transferase (GGT) greater than or equal to 2 × ULN; or, if AST, ALP, or GGT greater than or equal to 1 × ULN, but less than or equal to 2 × ULN and considered clinically relevant by the Investigator. 3. History of multiple drug allergies or allergic reactions to an oligonucleotide or N acetylgalactosamine (GalNAc). 4. History of intolerance to subcutaneous (SC) injection or relevant abdominal scarring (surgical, burns, etc.) 5. Received an investigational agent (including PCSK9 inhibitors) within 30 days or 5 half-lives (whichever is longer) before the first dose of the study drug or are in another clinical study. 6. History or clinical evidence of drug abuse within the 12 months before screening or positive screen for drugs of abuse. 7. Alcohol consumption greater than 14 standard drinks per week within one month before screening or positive screen for an alcohol breath test (1 standard drink equal to 10 grams of alcohol). 8. Regular tobacco use equal to 5 cigarettes per day within 6 months before screening. 9. Donate more than 500 mL of blood within 90 days before the first dose of the study drug.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026