About this trial
The goal of this study is to see whether a medicine called emapalumab, a monoclonal antibody, is safe and works well for patients aged 1 year and older who have indeterminate severe hepatitis with T-cell activation and have not responded well to steroids or still need them.
This study has a Screening Cohort and an Intervention Cohort.
The Screening Cohort will enroll patients with severe hepatitis of all etiologies to observe and collect research samples. Patients enrolled on the Screening Cohort will be asked to participate on the Intervention Cohort if they develop steroid-refractory/ dependent indeterminate severe hepatitis (iSH-T). Additionally, patients may bypass the Screening Cohort and enroll directly in the Intervention Cohort if they already meet its eligibility criteria. Patients in the Intervention Cohort will be treated with emapalumab.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age: Participants must be ≥ 1 year of age at the time of screening.
Evidence of Severe Hepatic Injury of all etiology (not just iSH/ iSH-T): Serum alanine aminotransferase (ALT) ≥ 1000 U/L documented within 7 days prior to enrollment.
Disqualifiers
Any condition impairing informed consent/assent or protocol compliance
Steroid-refractory, steroid-dependent, or relapse of hepatitis after stopping steroids and have an Indeterminate etiology of hepatitis based on standard of care, age appropriate evaluation
Age: ≥ 1 year
ALT ≥ 1000 U/L prior to initiation of any immune modulatory therapy
Trial design
Single group
Treatments tested in this trial
Emapalumab
DrugParticipants on the Intervention Cohort will receive a combination of immunomodulatory regimen using emapalumab and methylprednisolone (or prednisone equivalent), aimed at controlling severe immune-mediated hepatitis and preventing progression to liver failure.
Treatment groups
Trial outcomes
Primary outcomes
Incidence of Liver Failure
INR \>2 on two consecutive occasions without hepatic encephalopathy (HE), or INR ≥1.5 with evidence of HE
Secondary outcomes
Complete Response (CR)
A complete response (CR) is defined by normalization or near-normalization of liver injury markers and hepatic function. Patients achieving CR will demonstrate an ALT \< 2.5X ULN together with an INR ≤ 1.2.
Cytokine and Chemokine Profiling
The cytokine milieu including interferon-γ, interferon-stimulated gene products, TNF-α, IL-6, IL-18, CXCL9, and others will be quantified to define the inflammatory environment at baseline and during treatment.
Emapalumab Immunologic Effects
Change in circulating activated CD8+ T cells from the initiation of emapalumab to Days 7, 14, 30, 60, 90, and 180 of study
Incidence and Severity of Adverse Events
Incidence of all adverse events of all grades as defined by CTCAE version 5.0
Sponsors and contacts
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Children's Healthcare of Atlanta
Lead sponsor
Sobi, Inc.
Collaborator
This trial is not recruiting at the moment. You can still explore other options: