VIR-1111: A Prototype Human CMV-based Vaccine for Human Immunodeficiency Virus (HIV) in Healthy Volunteers

HIV I Infection Clinical Trial

Official title:

A Phase 1a, Randomized, Placebo-Controlled Study to Evaluate the Safety and Immunogenicity of a Prototype Human CMV-based Vaccine for Human Immunodeficiency Virus (HIV) in Healthy Volunteers

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04725877
• Other study ID #: VIR-1111-2001
• Status: Completed
• Phase: Phase 1
• Start date: December 28, 2020
• Est. completion date: December 5, 2022

Study information

• Verified date: February 2023
• Source: Vir Biotechnology, Inc.
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This is a Phase 1a, first in human study in which healthy adult participants who are considered to be at low-risk for HIV infection and are seropositive for cytomegalovirus (CMV) will receive two doses of VIR-1111 or placebo. These participants will be assessed for safety, reactogenicity, tolerability and immunogenicity. There is an optional long-term follow-up study that would lengthen study participation for up to 3 years post-first dose.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 27
• Est. completion date: December 5, 2022
• Est. primary completion date: December 5, 2022
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 50 Years

Eligibility

Inclusion Criteria:

• Healthy males or healthy females of non-child-bearing potential between the ages of 18 to 50 at the time of screening
• Positive CMV serostatus
• Assessed by clinic staff as being low risk for HIV infection and committed to maintaining behavior consistent with low risk of HIV exposure through the last protocol visit
• Willing to use condoms during intercourse through Week 36 or the end of the study
• Willing to undergo HIV testing, risk reduction counseling, and receive HIV test results
• Willing to comply with the protocol requirements regarding donation of blood, sperm or other tissues
• In the opinion of the Investigator, generally in good health as determined from medical history and no clinically significant findings from physical examinations, vital signs, and laboratory values

Exclusion Criteria:

• Live in a home with children under the age of 6
• Routine provision of child care to children under the age of 6
• Have close contact with immunocompromised individuals
• Have close contact with pregnant women or a partner planning to become pregnant during the course of the study
• Health care provider who routinely comes into contact with immunosuppressed patients or pregnant women
• Participant is immunocompromised
• Participant has an autoimmune disorder
• Positive HIV test at the time of study screening
• Receipt of another investigational HIV or CMV vaccine candidate

Related Conditions & MeSH terms

• Acquired Immunodeficiency Syndrome
• HIV I Infection
• HIV Infections

Intervention

Biological:
• VIR-1111
VIR-1111 is administered as a 1 mL subcutaneous injection in the deltoid area of the upper arm on Day 1 and Day 57.

Drug:
• Placebo
A placebo (Tris NaCl Sucrose formulation buffer) given by subcutaneous injection.

Locations

Country	Name	City	State
United States	Investigative Site	Madison	Wisconsin
United States	Investigative Site	Miami	Florida
United States	Investigative Site	Seattle	Washington

Sponsors (2)

Lead Sponsor	Collaborator
Vir Biotechnology, Inc.	Bill and Melinda Gates Foundation

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of participants with any treatment-emergent adverse events (AEs)	A treatment-emergent AE is any AE with an onset date on or after the investigational product start date and no later than 36 weeks after permanent discontinuation of the investigational product.	Day 1 through 36 weeks
Primary	Number of participants with any serious AEs (SAEs)	An SAE is any life-threatening event or one that results in hospitalization, significant disability/incapacity, death or congenital anomaly/birth defect.	Day 1 through 36 weeks
Primary	Number of participants with any local site reactogenicity event after first dose	Signs and symptoms will be captured at the injection site (e.g., pain/tenderness, swelling, redness and induration) through self-assessment via participant diaries and in-person clinical assessments.	Day 1 through 14 days after first dose
Primary	Number of participants with any local site reactogenicity event after second dose	Signs and symptoms will be captured at the injection site (e.g., pain/tenderness, swelling, redness and induration) through self-assessment via participant diaries and in-person clinical assessments.	Day 1 through 14 days after second dose
Primary	Number of participants with any systemic reactogenicity event after first dose	Systemic signs and symptoms (fever, headache, fatigue, arthralgia, myalgia, malaise, nausea, vomiting or chills) through self-assessment via participant diaries and in-person clinical assessments.	Day 1 through 14 days after first dose
Primary	Number of participants with any systemic reactogenicity event after second dose	Systemic signs and symptoms (fever, headache, fatigue, arthralgia, myalgia, malaise, nausea, vomiting or chills) through self-assessment via participant diaries and in-person clinical assessments.	Day 1 through 14 days after second dose
Primary	Number of participants with any treatment-emergent clinical laboratory abnormalities (chemistry, hematology and liver function tests)	A treatment-emergent clinical laboratory abnormality is a clinical laboratory value that increases at least 1 toxicity grade from baseline at any postbaseline timepoint up to 30 days after permanent discontinuation of study drug. Clinical laboratory abnormalities are graded using DAIDS Table for Grading and Severity of Adult and Pediatric Events, Corrected Version 2.1, July 2017.	Day 1 through 36 weeks
Primary	Number of participants with CMV vector viremia (blood)	Quantitative polymerase chain reaction (qPCR) for CMV will be performed on participant blood samples collected throughout the study. Positive samples will undergo follow-up confirmatory PCR testing to differentiate wild-type CMV from CMV vaccine vector sequences.	Day 1 through 36 weeks
Primary	Number of participants with CMV vector shedding (urine and saliva)	Quantitative polymerase chain reaction (qPCR) for CMV will be performed on both saliva and urine samples collected from participants throughout the study to monitor for viral shedding. Positive samples will undergo follow-up confirmatory PCR testing to differentiate wild-type CMV from CMV vaccine vector sequences.	Day 1 through 36 weeks
Secondary	Frequency of CMV-specific CD8 T cells via peptide stimulation, intracellular cytokine staining and flow cytometry to detect IL-2 AND/OR IFNg AND/OR TNFa		0-36 weeks
Secondary	Frequency of CMV-specific CD4 T cells via peptide stimulation, intracellular cytokine staining and flow cytometry to detect IL-2 AND/OR IFNg AND/OR CD154		0-36 weeks
Secondary	Frequency of HIV-1 Clade A Gag-specific CD4 T cells via peptide stimulation, intracellular cytokine staining and flow cytometry to detect IL-2 AND/OR IFNg AND/OR TNFa AND/OR CD154		0-36 weeks
Secondary	Frequency of HIV-1 Clade A Gag-specific CD8 T cells T cells via peptide stimulation, intracellular cytokine staining and flow cytometry to detect IL-2 AND/OR IFNg AND/OR TNFa		0-36 weeks
Secondary	Memory phenotype of CMV-specific CD4 T cells via flow cytometry analysis of CD45RA, CCR7, CD27, CD28 AND/OR CD95.		0-36 weeks
Secondary	Memory phenotype of CMV-specific CD8 T cells via flow cytometry analysis of CD45RA, CCR7, CD27, CD28 AND/OR CD95		0-36 weeks
Secondary	Memory phenotype of HIV-1 Clade A Gag-specific CD4 T cells via flow cytometry analysis of CD45RA, CCR7, CD27, CD28 AND/OR CD95		0-36 weeks
Secondary	Memory phenotype of HIV-1 Clade A Gag-specific CD8 T cells via flow cytometry analysis of CD45RA, CCR7, CD27, CD28 AND/OR CD95		0-36 weeks
Secondary	Binding titers of CMV-specific IgG antibodies		0-36 weeks
Secondary	Binding titers of HIV Clade A Gag-specific IgG antibodies		0-36 weeks