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Evaluating the Safety and Immunogenicity of Stabilized CH505 TF chTrimer in Healthy, HIV-uninfected Adult Participants.

HIV Infections Clinical Trial

Official title:
A First-in-human Phase 1 Clinical Trial to Evaluate the Safety and Immunogenicity of Stabilized CH505 TF chTrimer in Healthy, HIV-uninfected Adult Participants.

Clinical Trial Summary

This is an open-label Phase 1 study to examine the safety and immunogenicity of the CH505 TF chTrimer vaccine with 3M-052-AF +/- Alum adjuvant in healthy adults. The primary hypothesis is that the CH505 TF chTrimer will expand CH103-like B-cell precursors. HVTN 300 Part A examines the safety and immunogenicity of the CH505TF chTrimer with 5 mcg 3M-052-AF + 500 mcg Alum. HVTN 300 Part B is being added to this protocol with a goal of assessing the optimal dosing and combination of 3M-052-AF and Alum adjuvant, that can potentially lead to improved neutralizing antibody activity and decreased reactogenicity, compared to Part A. Three groups have been added to Part B (Group 2: 3 mcg 3M-052-AF without Alum, Group 3: 3 mcg 3M-052 with Alum, and Group 4: 5 mcg 3M-052-AF without Alum).

Clinical Trial Description

The primary hypothesis is that the CH505 TF chTrimer vaccine will expand B cell precursor lineages capable of ultimately producing autologous and heterologous Tier 2 broadly neutralizing antibodies (bnAbs). Participants will receive CH505 TF chTrimer plus via two intramuscular injections administered five times throughout the study. Participants will be evaluated for safety and immune responses through blood collection at specified timepoints throughout the study. Each participant will have up to 18 months of scheduled clinic visits and will have a follow-up safety assessment 12 months after their final vaccination. 3M-052-AF (at either a 3 mcg dose or a 5 mcg dose), with or without Alum, via two intramuscular injections administered five times throughout the study. Participants will be evaluated for safety and immune responses through blood collection at specified timepoints throughout the study. Each participant will have up to 18 months of scheduled clinic visits and will have a follow-up safety assessment 12 months after their final vaccination. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04915768
Study type Interventional
Source National Institute of Allergy and Infectious Diseases (NIAID)
Contact
Status Active, not recruiting
Phase Phase 1
Start date January 23, 2023
Completion date January 23, 2025
View Details
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