NCT03284710

Safety and Immunogenicity of Clade C ALVAC and gp120 HIV Vaccine

A Phase 1/2a Partially Double-blinded, Randomized Clinical Trial to Characterize the Safety and Immunogenicity of Clade C ALVAC-HIV (vCP2438) and Bivalent Subtype C gp120 Alone, With MF59 Adjuvant, and With Alum Adjuvant in Healthy, HIV-uninfected Adult Participants

• Status: Completed
• Phase: Phase 1 / Phase 2
• Study type: Interventional
• Enrollment: 132 (actual)
• Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) · NIH
• Sex: All
• Age: 18 Years – 40 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is to evaluate the safety and immune response to an HIV clade C vaccine and to an MF59- or alum-adjuvanted clade C Env protein in healthy, HIV-uninfected adults.

Detailed description

This study will evaluate the safety, tolerability, and immunogenicity to vCP2438 (an HIV clade C vaccine) and to an unadjuvanted or MF59- or alum-adjuvanted bivalent clade C gp120 in healthy, HIV-uninfected adults. The study will enroll healthy, HIV-uninfected participants aged 18 to 40 years. Participants will be randomly assigned to one of 4 groups. \[describe further\] Study visits will include a physical examination, an interview and/or questionnaire, HIV testing and HIV risk-reduction counseling, and urine and blood collection. A subset of participants will provide rectal fluid, cervical fluid, semen, or stool samples.

Conditions

• HIV Infections

Interventions

Type	Name	Description
BIOLOGICAL	ALVAC-HIV (vCP2438)	Expresses the gene products ZM96 gp120 (clade C strain) linked to the sequences encoding the HIV-1 transmembrane (TM) anchor sequence of gp41 (28 amino acids clade B LAI strain) and gag and pro (clade B LAI strain); formulated as a lyophilized vaccine for injection at a viral titer ≥ 1 × 10\^6 cell culture infectious dose (CCID)50 and \< 1 × 10\^8 CCID50 (nominal dose of 10\^7 CCID50) and reconstituted with 1mL of sterile sodium chloride solution (NaCl 0.4%) for intramuscular (IM) injection as a single dose
BIOLOGICAL	Bivalent Subtype C gp120/MF59	Consists of 2 subtype C recombinant monomeric proteins, TV1.C gp120 Env and 1086.C gp120 Env, each at a dose of 100 mcg, mixed with MF59 adjuvant (an oil-in-water emulsion); delivered as a 0.5 mL IM injection
BIOLOGICAL	Bivalent Subtype C gp120 admixed with Al(OH)3 Suspension	Consists of 2 subtype C recombinant monomeric proteins, TV1.C gp120 Env and 1086.C gp120 Env, each at a dose of 100 mcg, admixed with Aluminum Hydroxide Suspension (\~625 mcg aluminum content); delivered as a 0.5 mL IM injection
BIOLOGICAL	Bivalent Subtype C gp120	Consists of 2 subtype C recombinant monomeric proteins, TV1.C gp120 Env and 1086.C gp120 Env, each at a dose of 100 mcg, mixed with sodium chloride for injection, 0.9%; delivered as a 0.5 mL IM injection

Timeline

• Start date: 2017-06-19
• Primary completion: 2019-12-12
• Completion: 2019-12-12
• First posted: 2017-09-15
• Last updated: 2024-09-19
• Results posted: 2021-02-18

Locations

6 sites across 3 countries: Mozambique, South Africa, Zimbabwe

Regulatory

• FDA-regulated drug study