Expanded-Access Program for the Treatment of Chronic Hepatitis D With Brelovitug (BTG-EAP)

November 9, 2026 updated by: Mirum Pharmaceuticals, Inc.

Brelovitug is designed to target or bind to a key protein on the surface of hepatitis D and hepatitis B viruses, known as the hepatitis B surface antigen (HBsAg). By targeting this protein, brelovitug may help neutralize virus particles and support their removal from the bloodstream.

The aim of this expanded-access program (EAP) is to make brelovitug available to patients with Chronic Hepatitis D (CHD) who are in medical need, cannot benefit from any other comparable authorized treatment, and cannot participate in any available clinical trial.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Available

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This expanded access program provides brelovitug at no cost to eligible adults with chronic hepatitis D who have no comparable approved treatment option, cannot tolerate or continue approved therapy, or are not candidates for approved therapy based on the treating physician's clinical judgment.

Patients must be unable or ineligible to participate in an available brelovitug clinical trial. All patients must meet the following criteria to be considered eligible for program entry:

  1. Informed consent and assent provided, as applicable per Institutional Review Board (IRB) / Ethic Committee (EC), and willing to comply with the procedures and assessments.

  2. Medical diagnosis of Chronic Hepatitis Delta with confirmatory hepatitis delta virus (HDV) antibody and RNA

  3. On stable nucleos(t)ide therapy for Chronic Hepatitis B for duration of EAP and after EAP at direction of treating physician.

  4. Patients aged ≥18 years for whom, in the judgment of the treating physician, treatment with brelovitug is clinically appropriate based on efficacy, safety, or other relevant clinical considerations.

    • Patients who are intolerant, non-compliant, ineligible or who discontinue a currently approved therapy; or patients who are not candidates for a currently approved therapy in the clinical judgment of the treating physician.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Expanded Access

Expanded Access Type

Expanded Access Type

Describes the category of expanded access under U.S. Food and Drug Administration (FDA) regulations. There are three types of expanded access:
  • Individual Patients: Allows a single patient, with a serious disease or condition who cannot participate in a clinical trial, access to a drug or biological product that has not been approved by the FDA. This category also includes access in an emergency situation.
  • Intermediate-size Population: Allows more than one patient (but generally fewer patients than through a Treatment IND/Protocol) access to a drug or biological product that has not been approved by the FDA. This type of expanded access is used when multiple patients with the same disease or condition seek access to a specific drug or biological product that has not been approved by the FDA.
  • Treatment IND/Protocol: Allows a large, widespread population access to a drug or biological product that has not been approved by the FDA. This type of expanded access can only be provided if the product is already being developed for marketing for the same use as the expanded access use.
  • Treatment IND/Protocol

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Ohio
      • Cleveland, Ohio, United States, 44106
        • Available
        • University Hospitals Cleveland Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Informed consent and assent provided, as applicable per Institutional Review Board (IRB) / Ethic Committee (EC), and willing to comply with the procedures and assessments.

  • Medical diagnosis of Chronic Hepatitis Delta with confirmatory HDV antibody and RNA

  • On stable nucleos(t)ide therapy for Chronic Hepatitis B for duration of EAP and after EAP at direction of treating physician.

  • Patients aged ≥18 years for whom, in the judgment of the treating physician, treatment with brelovitug is clinically appropriate based on efficacy, safety, or other relevant clinical considerations.

    • Patients who are intolerant, non-compliant, ineligible or who discontinue a currently approved therapy; or patients who are not candidates for a currently approved therapy in the clinical judgment of the treating physician.

Exclusion Criteria:

  • Eligible and access to any ongoing CHD clinical trials designed to establish safety and efficacy.

  • Pregnant, intends to become pregnant or lactating females.

  • Known hypersensitivity to brelovitug or any of its excipients.

  • Any clinically significant medical condition, comorbidity, laboratory abnormality, or other clinical circumstance that, in the judgment of the treating physician and/or Sponsor's Medical Reviewer, would place the patient at an unacceptable risk from treatment with brelovitug or result in an unfavorable benefit-risk assessment. Such conditions may include, but are not limited to, clinically significant cardiovascular, hepatic, gastrointestinal, pulmonary, neurologic, infectious, or renal disease.

  • Current or prior hepatic decompensation (ascites, hepatic encephalopathy, variceal hemorrhage, etc) or Child-Turcotte-Pugh (CTP) Class B or C cirrhosis.

    • Clinically significant liver disease attributable to an etiology other than HBV or HDV that, in the judgment of the treating physician and/or Sponsor's Medical Reviewer, would result in an unfavorable benefit-risk assessment for treatment with brelovitug. Patients with compensated cirrhosis up to CPT A6 may be considered on a case-by-case basis following review and approval by the Sponsor's Medical Reviewer, provided the potential benefits of treatment are considered to justify the potential risks.
    • Presence of any disease, condition, concomitant therapy, or other clinical circumstance that is known or reasonably expected to significantly alter the absorption, distribution, metabolism, or excretion of brelovitug, or otherwise adversely affect its safety or intended pharmacologic activity, and that, in the judgment of the treating physician and/or Sponsor's Medical Reviewer, would make treatment with brelovitug clinically inappropriate.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Mirum Pharmaceuticals, Inc.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 2, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 2, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 6, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 13, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 9, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • BTG-EAP

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings