A Study to Evaluate Tobevibart + Elebsiran in Chronic HDV Infection

NCT ID: NCT06903338

Last Updated: 2025-11-14

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

124 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-03-12

Study Completion Date

2031-05-31

Brief Summary

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This is a multicenter, open label, randomized Phase 3 clinical study to evaluate the efficacy and safety of the combination of tobevibart + elebsiran for the treatment of chronic hepatitis delta in comparison to delayed treatment.

Detailed Description

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Conditions

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Viral Hepatitis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Arm 1 (Tobevibart + Elebsiran)

Participants will receive treatment with tobevibart + elebsiran for 240 weeks.

Group Type EXPERIMENTAL

Tobevibart

Intervention Type DRUG

Tobevibart administered by subcutaneous injection

Elebsiran

Intervention Type DRUG

Elebsiran administered by subcutaneous injection

Arm 2 (Tobevibart + Elebsiran)

Participants will receive tobevibart + elebsiran after an observational period for 240 weeks.

Group Type EXPERIMENTAL

Tobevibart

Intervention Type DRUG

Tobevibart administered by subcutaneous injection

Elebsiran

Intervention Type DRUG

Elebsiran administered by subcutaneous injection

Interventions

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Tobevibart

Tobevibart administered by subcutaneous injection

Intervention Type DRUG

Elebsiran

Elebsiran administered by subcutaneous injection

Intervention Type DRUG

Other Intervention Names

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VIR-3434 VIR-2218

Eligibility Criteria

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Inclusion Criteria

1. Male or female ages 18 to 70 years at screening
2. Chronic HDV infection for \>/= 6 months
3. On NRTI therapy against HBV for at least 12 weeks prior to day 1 or have HBV DNA \< 20 IU/ml at screening, currently on locally approved NRTI therapy
4. Serum ALT \> ULN and \< 5x ULN
5. Non-cirrhotic or Compensated Cirrhotic Liver Disease at screening

Exclusion Criteria

1. Any clinically significant chronic or acute medical or psychiatric condition that makes the participant unsuitable for participation.
2. History of significant liver disease from non-HBV or non-HDV etiology
3. History of allergic reactions, hypersensitivity, or intolerance to study drug, its metabolites, or excipients.
4. History of anaphylaxis
5. History of immune complex disease
6. History of autoimmune disorder
7. History or evidence of alcohol or drug abuse within 6 months before screening or a positive drug screen at screening unless it can be explained by a prescribed medication
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Vir Biotechnology, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Investigative Site

Chandler, Arizona, United States

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Los Angeles, California, United States

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Redwood City, California, United States

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San Francisco, California, United States

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DeLand, Florida, United States

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Chicago, Illinois, United States

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Baltimore, Maryland, United States

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Hillsborough, New Jersey, United States

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New York, New York, United States

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New York, New York, United States

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New York, New York, United States

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Murray, Utah, United States

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Seattle, Washington, United States

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Calgary, Alberta, Canada

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Montreal, Quebec, Canada

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Montreal, , Canada

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Ottawa, , Canada

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Québec, , Canada

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Vancouver, , Canada

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Tbilisi, , Georgia

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Tbilisi, , Georgia

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Tbilisi, , Georgia

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Frankfurt, , Germany

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Hanover, , Germany

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Heidelberg, , Germany

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Chisinau, , Moldova

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Auckland, , New Zealand

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Karachi, , Pakistan

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Karachi, , Pakistan

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Lahore, , Pakistan

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Rawalpindi, , Pakistan

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Bucharest, , Romania

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Bucharest, , Romania

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Bucharest, , Romania

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Kyiv, , Ukraine

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London, , United Kingdom

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London, , United Kingdom

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Manchester, , United Kingdom

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Nottingham, , United Kingdom

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Countries

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United States Canada Georgia Germany Moldova New Zealand Pakistan Romania Ukraine United Kingdom

Other Identifiers

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VIR-CHDV-V203

Identifier Type: -

Identifier Source: org_study_id

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