Study of Oral TLR8 Agonist Selgantolimod on HBsAg in Participants With Both Chronic Hepatitis B and HIV

NCT ID: NCT05551273

Last Updated: 2025-12-30

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

PHASE2

Total Enrollment

29 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-05-05

Study Completion Date

2026-04-29

Brief Summary

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The study aims to assess safety and tolerability of oral toll-like receptor (TLR) 8 agonist Selgantolimod (SLGN) administered for 24 weeks in participants with both CHB and HIV who have been receiving suppressive antiviral therapy for both viruses for ≥5 years and have qHBsAg level \>1000 (3 log10) IU/mL at screening. The study will also evaluate if TLR8 stimulation with SLGN will reduce hepatitis B surface antigen (HBsAg) titers in the blood.

Detailed Description

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A5394 is a phase II, double-blinded, placebo-controlled trial. Forty-eight study participants will be randomized 3:1 to receive SLGN or its placebo (36 active and 12 placebo), and randomization will be stratified by HBeAg status. One-half of the study participants will be HBeAg positive (n=24) at screening, and the other half will be HBeAg negative (n=24). All participants will remain on their non-study-provided antiviral therapy throughout the study.

Conditions

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Hepatitis B HIV Infections

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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Arm A

Selgantolimod 3 mg once weekly for 24 weeks

Group Type EXPERIMENTAL

Selgantolimod

Intervention Type DRUG

1.5 mg tablet

Arm B

Matching Placebo for Selgantolimod once weekly for 24 weeks

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Matching placebo tablet

Interventions

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Selgantolimod

1.5 mg tablet

Intervention Type DRUG

Placebo

Matching placebo tablet

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

1. HIV-1 infection
2. Effective antiviral therapy for HIV (ART) and HBV that includes TDF, TAF, TDF/FTC, TDF/3TC (tenofovir disoproxil fumarate plus lamivudine), TAF/FTC, or entecavir (ETV), for ≥5 years immediately prior to study entry. ART is defined as including a minimum of two anti-HIV antivirals.
3. CD4+ cell count ≥350 cells/mm3
4. HIV-1 RNA \<50 copies/mL measured on at least two occasions at least 12 weeks apart, with no documented value \>200 copies/mL, over the 12 months prior to study entry.
5. Positive or negative HBeAg
6. Negative anti-HDV
7. Current CHB infection
8. HBV DNA level \<50 IU/mL measured on at least two occasions at least 12 weeks apart, with no documented value ≥50 IU/mL, over the 12 months prior to study entry.
9. Quantitative HBsAg \>1000 IU/mL
10. Hepatitis C virus (HCV) antibody negative, or if the participant is HCV antibody positive, an undetectable HCV RNA.
11. Participants age ≥18 years and ≤70 years at study entry
12. Participants must agree to stay on an effective antiviral therapy for HIV (ART) and HBV throughout the study.

Exclusion Criteria

1. Receipt of treatment for HCV within 24 weeks prior to study entry
2. Evidence of advanced fibrosis or cirrhosis (Metavir ≥F3 or equivalent).
3. Current or prior history of clinical hepatic decompensation (e.g., ascites, encephalopathy, or variceal hemorrhage)
4. History of HCC or cholangiocarcinoma
5. Malignancy within 5 years prior to study entry. NOTE: A history of non-melanoma skin cancer (e.g., basal cell carcinoma or squamous cell skin cancer) is not exclusionary.
6. History of solid organ transplantation
7. Presence of any active or acute AIDS-defining opportunistic infections within 60 days prior to study entry
8. History of uveitis or posterior synechiae
9. Breastfeeding
Minimum Eligible Age

18 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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National Institute of Allergy and Infectious Diseases (NIAID)

NIH

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Alabama CRS

Birmingham, Alabama, United States

Site Status

UCSD Antiviral Research Center CRS

San Diego, California, United States

Site Status

The Ponce de Leon Center CRS

Atlanta, Georgia, United States

Site Status

Northwestern University CRS

Chicago, Illinois, United States

Site Status

Weill Cornell Chelsea CRS

New York, New York, United States

Site Status

Columbia P&S CRS

New York, New York, United States

Site Status

Weill Cornell Uptown CRS

New York, New York, United States

Site Status

Chapel Hill CRS

Chapel Hill, North Carolina, United States

Site Status

Greensboro CRS Site# 3203

Greensboro, North Carolina, United States

Site Status

Cincinnati Children's Hosp / Univ Hosp

Cincinnati, Ohio, United States

Site Status

Case CRS Site ID# 2501

Cleveland, Ohio, United States

Site Status

Ohio State University CRS

Columbus, Ohio, United States

Site Status

Univ of Pittsburgh

Pittsburgh, Pennsylvania, United States

Site Status

Vanderbilt Therapeutics (VT) CRS

Nashville, Tennessee, United States

Site Status

Houston AIDS Research Team CRS

Houston, Texas, United States

Site Status

University of Washington AIDS CRS

Seattle, Washington, United States

Site Status

Hospital Nossa Senhora da Conceicao CRS

Porto Alegre, , Brazil

Site Status

Instituto de Pesquisa Clinica Evandro Chagas (IPEC) CRS Site ID# 12101

Rio de Janeiro, , Brazil

Site Status

Instituto de Pesquisa Clinica Evandro Chagas (IPEC) CRS

Rio de Janeiro, , Brazil

Site Status

GHESKIO Institute of Infectious Diseases and Reproductive Health (GHESKIO - IMIS) CRS

Port-au-Prince, , Haiti

Site Status

Barranco CRS

Lima, , Peru

Site Status

De La Salle Health Science Institute Angelo King Medical Research Center (DLSHSI-AKMRC)

Cavite, , Philippines

Site Status

Soweto ACTG CRS

Johannesburg, Gauteng, South Africa

Site Status

Thai Red Cross AIDS Research Centre (TRC-ARC) CRS

Pathum Wan, Bangkok, Thailand

Site Status

Chiang Mai University HIV Treatment (CMU HIV Treatment) CRS

Chiang Mai, , Thailand

Site Status

Milton Park CRS

Milton Park, Harare, Zimbabwe

Site Status

Countries

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Botswana Uganda United States Brazil Haiti Peru Philippines South Africa Thailand Zimbabwe

Other Identifiers

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A5394

Identifier Type: -

Identifier Source: org_study_id