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Clinical trial retreatment by therapeutic vaccine against HBV

Phase I/II clinical trial of retreament by therapeutic vaccine containing HBsAg and HBcAg against HBV carrier - HepBVac-J1-2

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs061200009
Enrollment
70
Registered
2020-07-10
Start date
2020-07-20
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic hepatitis B

Interventions

NASVAC (HBsAg 80 microgram, HBcAg 80microgram) will be given every 2 weeks for 10 times via nasal route to HBV carrier (HBV asymptomatic carrier and CHB patient treating with NAs)

Sponsors

Hiasa Yoichi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: HBV asymptomatic carrier or chronic hepatitis B patients under nucleotide analogue treatment those who previously participated in phase I/II clinical trial of therapeutic vaccine (1) Positive for HBsAg or HBV-DNA with previous history of perticipation of phase I/II clinical trial of NASVAC (2) Eastern Cooperative Oncology Group (ECOG) Performance status (PS) 0-2 (3) No evidence of organ dysfunction Liver: Child-Pugh Score under 9 Kidney: eGFR more than 30ml/min Heart: No abnormality in ECG Lung: SpO2 more than 90% in room air

Exclusion criteria

Exclusion criteria: (1) Allergic history against past vaccination (2) Pregnant, unwilling to practice contraception during the study or lactating female (3) Severe complication (malignant hypertension, severe congestive heart failure, severe liver failure, poorly controlled diabetes mellitus, severe pulmonary fibrosis, active interstitial pneumonia) (4) Bearing malignant carcinoma including HCC (5) Severe mental disability (6) Positive for HCV-RNA (7) Taking immunosuppressive drugs, steroid, interferons prior 90 days (8) Inappropriate to participate in this trial

Design outcomes

Primary

MeasureTime frame
Reduction of HBsAg

Secondary

MeasureTime frame
Incidence of AEs according to CTCAE grade especially for higher than grade 3 HBV-DNA reduction, HBsAg and HBcAg specific adoptive immunity, HBeAg seroconversion, resolution of liver fibrosis

Contacts

Public ContactOsamu Yoshida

Ehime University

yoshidao@m.ehime-u.ac.jp+81-89-960-5308

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026