A5355

Trial to Evaluate the Safety and Immunogenicity of a Modified Vaccinia Ankara (MVA)-Based Anti-Cytomegalovirus (CMV) Vaccine (Triplex®)

This is a phase II, double-blind, randomized, placebo-controlled, multicenter study to evaluate the safety and immunogenicity of two injections of MVA Vaccine Encoding CMV antigens (Triplex®) in adults with both HIV and CMV. Participants will be randomized in a 2:1 ratio to receive either two injections of CMV-MVA Triplex® or placebo administered at study Entry/Day 0 and week 4. Participants will have follow-up visits in person or by phone for 92 weeks after the second injection, for a total of 96 weeks of follow-up. During the study, participants will have blood, urine, genital secretions, and oral secretions collected.

Enrollment will be stratified based on sex and use of gender-affirming hormones with at least 25% of participants being individuals assigned female sex at birth not on testosterone or individuals assigned male sex at birth on feminizing hormones. Special outreach to transgender and gender non-binary persons will be encouraged with exploratory stratified analysis conducted based on both gender and sex assigned at birth.