Study to Evaluate the Recombinant VSV (rVSV)-Marburg Virus Vaccine Candidate (PHV01) in Healthy Adult Subjects

NCT ID: NCT06265012

Last Updated: 2025-09-05

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 36 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-02-05
• Study Completion Date: 2024-09-23

Brief Summary

This is a Phase 1 randomized, single-blind, placebo-controlled, ascending dose study to evaluate the safety and immunogenicity of rVSV∆G-MARV-GP [Angola] (PHV01, Marburg Virus glycoprotein [MARV GP] Vaccine) in healthy adults. PHV01 is a live, attenuated rVSV vaccine expressing the MARV GP. The main questions it aims to answer are:

• Which dose of PHV01 is safe to administer to, and well-tolerated by healthy adult subjects?
• What is the immunologic response (Marburg-specific Immunoglobulin G (IgG) ELISA antibody and neutralizing antibodies) to each dose level?

Participants will receive 1 intramuscular injection of PHV01 or placebo on Day 1 and will be followed for 181 days.

Detailed Description

Participants will be randomly assigned to vaccine or placebo in four dose cohorts, starting with evaluation of safety using a sentinel group at each dose level, followed by dosing of the rest of the group in the next cohort. That next cohort will also dose the sentinel group with the next higher dose.

Conditions

Marburg Virus Disease

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: SEQUENTIAL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: QUADRUPLE

Study Groups

Group A, Low Dose PHV01

Group A (10 subjects) PHV01 @ 10\^5 pfu/dose given once

Group Type: EXPERIMENTAL

PHV01

Intervention Type: BIOLOGICAL

Marburg virus vaccine

Group B, Medium Dose PHV01

Group B (10 subjects) PHV01 @ 10\^6 pfu/dose given once

Group Type: EXPERIMENTAL

PHV01

Intervention Type: BIOLOGICAL

Marburg virus vaccine

Group C, Hjigh Dose PHV01

Group C (10 subjects) PHV01 @ 10\^7 pfu/dose given once

Group Type: EXPERIMENTAL

PHV01

Intervention Type: BIOLOGICAL

Marburg virus vaccine

Group D, Placebo

Group D (6 subjects) Placebo given once

Group Type: PLACEBO_COMPARATOR

Placebo

Intervention Type: BIOLOGICAL

Lactated Ringer's Solution

Interventions

PHV01

Marburg virus vaccine

Intervention Type: BIOLOGICAL

Placebo

Lactated Ringer's Solution

Intervention Type: BIOLOGICAL

Eligibility Criteria

Inclusion Criteria

• Healthy, adult, male or non-pregnant, non-lactating females, age 18-60 years
• Given written informed consent
• No clinically significant health problems
• Negative test for SARS-CoV-2
• Agree to avoid conception through Day 29
• Agree to minimize blood and body fluid exposures to others after vaccination through Day 29
• Agree to avoid exposure to immunocompromised persons after vaccination through Day 29

Exclusion Criteria

• Prior infection with Marburg virus, related filovirus, or Ebola virus
• Prior infection with vesicular stomatitis virus (VSV)
• Received any VSV-vectored vaccine
• BMI of ≥ 35
• Household contact who is immunodeficient, or on immunosuppressive medication
• Hepatitis B, hepatitis C, HIV-1, HIV-2, history of long COVID, diabetes, atopic dermatitis (eczema), chronic inflammatory disease, autoimmune or autoinflammatory disorder, malignancy, chronic or active neurologic disorder
• History of severe reactions to any vaccine or history of severe allergies
• Receipt of investigational product up to 30 days prior to randomization
• Receipt of licensed or authorized non-live vaccines within 14 days of planned study immunization (30 days for live vaccines).
• Known allergy to components of PHV01
• Injection sites obscured by tattoos or physical condition
• Significant psychiatric or medical condition or laboratory abnormality on screening
• History of Guillain Barre Syndrome or any chronic or acute neurological disorder
• Alcohol or illicit drug abuse within past 5 years
• Pregnant or lactating female
• Administration of blood or IgG within 60 days preceding study
• Administration of systemic chronic immunosuppressants (defined as more than 14 days) or other immune modifying drugs within 6 months of study entry
• History of blood donation within 60 days of study
• Unwilling to undergo diagnostic evaluation of rash (skin biopsy, if indicated) or joint symptoms (arthrocentesis if indicated by joint effusion), in both cases if acceptable to subject
• Elective surgery planned during the study period

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 60 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Biomedical Advanced Research and Development Authority

FED

Sponsor Role: collaborator

Public Health Vaccines LLC

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Joan Fusco, PhD

Role: STUDY_CHAIR

Public Health Vaccines

Richard Kenney, MD

Role: STUDY_DIRECTOR

Public Health Vaccines

Locations

CenExel RCA

Hollywood, Florida, United States

Countries

United States

Provided Documents

Document Type: Study Protocol

View Document

Document Type: Statistical Analysis Plan

View Document

Document Type: Informed Consent Form

View Document

Other Identifiers

PHV01-C-101

Identifier Type: -

Identifier Source: org_study_id