Study of EPI-003 in Select Nucleos(t)Ide Analogue-Treated, Chronic Hepatitis B Patients

Phase 1

Not yet recruiting

• Conditions: Chronic Hepatitis B; HBV (Hepatitis B Virus)
• Interventions: Drug: EPI-003

• Registration Number: NCT06661148
• Lead Sponsor: Epigenic Therapeutics, Inc

Brief Summary

This study is an open-label, 2-Part (Single Ascending Dose \[Part 1\] And Dose Expansion) study that will evaluate the safety of EPI-003 administered to patients with chronic infection with HBV (CHB). EPI-003 is a liver-targeted antiviral therapeutic for intravenous (IV) injection that is capable of precise epigenetic modifications of the HBV genome without causing mutations in the gene sequence itself. This study is designed to determine the safety and pharmacokinetic (PK) and pharmacodynamic (PD) profile of EPI-003 in this patient population.

Detailed Description

Not available

Study Timeline

• Status Verified: 2024-10
• Study First Submitted: 2024-10-21
• Study First Submitted QC: 2024-10-25
• Last Update Submitted: 2024-10-25
• Study First Posted: 2024-10-28
• Last Update Posted: 2024-10-28
• Study Start: 2024-12-01
• Primary Completion: 2027-06-30
• Study Completion: 2027-06-30

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 36

Inclusion Criteria

1. Aged 18 to 65 years (inclusive) at the time of signing the informed consent.
2. Body mass index (BMI) ≥ 18 kg/m2 and ≤ 35 kg/m2 at Screening, and body weight of ≤ 120 kg.
3. Chronic HBV infection for ≥ 6 months prior to Screening (eg, positive for serum HBsAg, HBV DNA, HBeAg for ≥ 6 months ) or serum immunoglobulin M (IgM) anti-HBc (hepatitis B core antibody) negative at Screening; AND Baseline HBsAg positive at Screening.
4. Has received treatment with a NA (entecavir, tenofovir disoproxil fumarate or tenofovir alafenamide) as a stable dose for ≥ 6 months before Screening and plans to continue at the same dose level for the duration of the study. Participants may be on other NAs but require Sponsor approval before enrolment.
5. HBV DNA < LLOQ (according to local guidelines) for ≥ 6 months and at Screening
6. Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2 × upper limit of normal (ULN) at Screening.
7. Able and willing to attend the necessary visits to the study site.
8. Able and willing to provide written informed consent after the nature of the study has been explained and prior to the commencement of any study procedures.

Exclusion Criteria

1. Evidence or history of liver disease of non-HBV aetiology.
2. Previous history or current diagnosis of significant liver fibrosis or cirrhosis
3. Liver ultrasound or other imaging with findings suggestive of HCC at any time.
4. Participants with serum alpha-fetoprotein (AFP) ≥ 200 ng/mL at Screening.
5. Positive test result for HIV-1 or HIV-2 that suggests a concurrent infection at Screening.
6. History of acute febrile illness, symptomatic viral, bacterial, or fungal infection within 1 week before Day 1.
7. History of receiving HBV vaccine or other HBV-targeted therapeutic within the 6 months before Day 1.
8. Previous treatment with an HBV-targeted treatment other than NAs within the 6 months before Day 1 or planned use during the study.
9. Any of the laboratory values at Screening (Screening laboratory tests may be repeated once for values thought to be erroneous OR not clinically significant as per the PI):
10. Immunodeficient or autoimmune conditions due to disease.
11. Chronic treatment with immunosuppressants.
12. Any history of unexplained blackouts, fainting episodes, significant arrythmias, clinically significant abnormality of ECG, marked QT abnormalities, or any known risk factors for Torsade de Points
13. History of anaphylaxis, hypersensitivity, or significant drug allergies.
14. Received any antiplatelet or antithrombotic therapy.
15. History of thrombophilia or history of a positive genetic test for Factor V Leiden and/or prothrombin 20210.
16. Known or suspected intolerance or hypersensitivity to the IP components.
17. Have received any other IP within 30 days or 5 half-lives of Day 1.
18. Have received any vaccination within 14 days prior to Day 1 or vaccination planned for 3 months following administration of IP.
19. Received any medications or other treatments that may adversely affect the immune system.
20. Excess alcohol consumption within 3 months of Screening.
21. Significant drug abuse/addiction within 3 months of Screening.
22. Any safety concern or personal condition that is inappropriate for study participation per the Investigator's judgement.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
EPI-003 group	EPI-003	Part A：Single Ascending Dose； Part B：Dose Expansion

Primary Outcome Measures

Name	Time	Method
Incidence of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs).	From Baseline through to Day 28 postdose	Incidence of treatment-emergent adverse events (TEAEs) and serious adverse events (SAEs).

Secondary Outcome Measures

Name	Time	Method
Change from baseline at different follow-up time points for HBsAg, HBsAb, HBV DNA, HBV pgRNA and HBcrAg	From Baseline (predose on Day 1) at Day 3, Day 7, Day 14, Day 28, Day 56, Day 84, Day 112, and Day 182, and Day 365 postdose for the following parameters	Change from baseline at different follow-up time points for HBsAg, HBsAb, HBV DNA, HBV pgRNA and HBcrAg
Evaluation of maximum observed concentration (Cmax)	Day 1, Day 3, Day 14, and Day 28	Evaluation of maximum observed concentration (Cmax)
Evaluation of maximum observed concentration (tmax)	Day 1, Day 3, Day 14, and Day 28	Evaluation of maximum observed concentration (tmax)
Evaluation of terminal elimination half-life (t1/2)	Day 1, Day 3, Day 14, and Day 28	Evaluation of terminal elimination half-life (t1/2)

Trial Locations

Locations (1)

Epigenic Therapeutics Investigational Site; 🇳🇿 Christchurch, New Zealand