Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.

NCT03393754 · ClinicalTrials.gov registry record · Phase 3

Immunogenicity and Safety of Sci-B-Vac® to Engerix-B® in Adults

A Phase 3 study, sponsored by VBI Vaccines.

Completed
Registry status
Phase 3
Development phase
1,607
Enrollment target

NCT03393754: Completed Phase 3 study, sponsored by VBI Vaccines.

NCT03393754 is a Phase 3 study that has completed, run by VBI Vaccines. The registered enrollment target is 1,607 participants, above the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (108% higher). According to ClinicalTrials.gov, the official US trial registry.

View on ClinicalTrials.gov ↗

View your shortlist →

The verdict

NCT03393754, a Phase 3 study, has completed, sponsored by VBI Vaccines.

COMPLETED
Registry status
Phase 3
Development phase
1,607 participants
Enrollment target

Study Summary

This study is a double-blind randomized controlled trial designed to establish the non-inferiority of Sci-B-Vac® compared to Engerix-B® in adults ≥ 18 years old and the superiority of Sci-B-Vac® compared to Engerix-B® in ≥ 45 years old.

Primary Outcome

To demonstrate that the SPR 4 weeks after completion of the three-dose regimen of Sci-B-Vac® is non-inferior to a three-dose regimen of Engerix-B® in adults ≥18 years old; i.e. the lower bound of the 95% two-sided confidence interval (CI) of the difference between the SPR in the Sci-B-Vac® arm minus the SPR in the Engerix-B® arm, achieved 4 weeks after the third vaccination, will be \> - 5%.

Interventions

  • BIOLOGICAL Hepatitis B Vaccination

Trial Details

FieldValue
Enrollment Target 1,607 participants
Start Date 2017-12-13
Est. Completion 2019-04-08
Phase Phase 3
VBI Vaccines

4 total trials

What the finished NCT03393754 record still lists

NCT03393754 is an interventional study that assigns participants to a tested intervention. Its 1,607 participants enrollment target places it among the larger protocols in the corpus, above the 772-participant average among 15,282 other Phase 3 trials with a reported enrollment target (108% higher).

The record links to 0 conditions, and to 1 intervention - of which Hepatitis B Vaccination is the first listed.

NCT03393754 does not publish any study locations in the registry export this page uses.

Frequently Asked Questions

What is clinical trial NCT03393754 about?

NCT03393754 is a clinical study titled "Immunogenicity and Safety of Sci-B-Vac® to Engerix-B® in Adults". This study is a double-blind randomized controlled trial designed to establish the non-inferiority of Sci-B-Vac® compared to Engerix-B® in adults ≥ 18 years old and the superiority of Sci-B-Vac® compared to Engerix-B® in ≥ 45 years old.

What is the current status of trial NCT03393754?

This trial is currently completed. It is a Phase 3 study. The enrollment target is 1,607 participants. The study started on 2017-12-13. Estimated completion is 2019-04-08.

What interventions are being tested in trial NCT03393754?

The interventions under investigation include: Hepatitis B Vaccination (BIOLOGICAL).

Who is sponsoring clinical trial NCT03393754?

This trial is sponsored by VBI Vaccines, which has 4 total clinical trials registered on ClinicalTrials.gov.

How this trial's enrollment target compares

Where NCT03393754's enrollment target sits among peer trials

1,607 142nd of 2000 higher than 1,859 of 2,000 other Phase 3 trials

participants (enrollment target), bucketed by value

Each bar is a band; taller bars hold more other Phase 3 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source ClinicalTrials.gov registry export · 2026-08-08

Nationwide trials with similar profiles

Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.

Similar enrollment target

  • NCT06271590 · 1,605 participants · NA

    MagicTouch™Sirolimus-Coated Balloon for Treatment of Coronary Artery Lesions in Small Vessels

  • NCT00646022 · 1,600 participants

    Natural History of Familial Carcinoid Tumor

  • NCT03109197 · 1,600 participants

    Sudden Unexplained Death in Childhood (SUDC) Registry

  • NCT03511118 · 1,600 participants

    Pharmacokinetics and Safety of Commonly Used Drugs in Lactating Women and Breastfed Infants

Similar registry start date

  • NCT05962346 · started 2026-12 · NA

    Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia

  • NCT07125183 · started 2026-12 · Phase 2

    Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma

  • NCT07292298 · started 2026-11 · Phase 2

    Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates

  • NCT04263285 · started 2026-10 · NA

    Treatment of Depression Post-SCI

Source: ClinicalTrials.gov NCT03393754, the US trial registry maintained by the National Library of Medicine. NCT03393754 (large enrollment · none site footprint · completed) retrieved and formatted by PlainTrial, see methodology.