PMID- 31535143 OWN - NLM STAT- MEDLINE DCOM- 20200221 LR - 20200221 IS - 1537-6613 (Electronic) IS - 0022-1899 (Linking) VI - 220 IP - 3 DP - 2019 Jul 2 TI - Phase 1 Clinical Trial of a Conditionally Replication-Defective Human Cytomegalovirus (CMV) Vaccine in CMV-Seronegative Subjects. PG - 411-419 LID - 10.1093/infdis/jiz141 [doi] AB - BACKGROUND: A conditionally replication-defective human cytomegalovirus (CMV) vaccine (V160) derived from AD169 and genetically engineered to express CMV pentameric complex (gH/gL/pUL128/pUL130/pUL131) was developed and evaluated for phase 1 vaccine safety and immunogenicity in CMV-seronegative and CMV-seropositive adults. METHODS: Subjects received 3 doses of V160 or placebo on day 1, month 1, and month 6. Four vaccine dose levels, formulated with or without aluminum phosphate adjuvant, were evaluated. Injection-site and systemic adverse events (AEs) and vaccine viral shedding were monitored. CMV-specific cellular and humoral responses were measured by interferon-gamma ELISPOT and virus neutralization assay up to 12 months after last dose. RESULTS: V160 was generally well-tolerated, with no serious AEs observed. Transient, mild-to-moderate injection-site and systemic AEs were reported more frequently in vaccinated subjects than placebo. Vaccine viral shedding was not detected in any subject, confirming the nonreplicating feature of V160. Robust neutralizing antibody titers were elicited and maintained through 12 months postvaccination. Cellular responses to structural and nonstructural viral proteins were observed, indicating de novo expression of viral genes postvaccination. CONCLUSIONS: V160 displayed an acceptable safety profile. Levels of neutralizing antibodies and T-cell responses in CMV-seronegative subjects were within ranges observed following natural CMV infection. CLINICAL TRIAL REGISTRATION: . NCT01986010. CI - (c) The Author(s) 2019. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com. FAU - Adler, Stuart P AU - Adler SP AD - CMV Research Foundation, Richmond, Virginia. FAU - Lewis, Nicole AU - Lewis N AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Conlon, Anthony AU - Conlon A AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Christiansen, Mark P AU - Christiansen MP AD - Diablo Clinical Research Inc., Walnut Creek, California. FAU - Al-Ibrahim, Mohamed AU - Al-Ibrahim M AD - SNBL Clinical Pharmacology Center, Baltimore, Maryland. FAU - Rupp, Richard AU - Rupp R AD - Sealy Institute for Vaccine Sciences, University of Texas Medical Branch, Galveston, Texas. FAU - Fu, Tong-Ming AU - Fu TM AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Bautista, Oliver AU - Bautista O AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Tang, Huaping AU - Tang H AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Wang, Dai AU - Wang D AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Fisher, Alison AU - Fisher A AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Culp, Timothy AU - Culp T AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Das, Rituparna AU - Das R AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Beck, Karen AU - Beck K AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Tamms, Gretchen AU - Tamms G AD - Merck & Co., Inc., Kenilworth, New Jersey. FAU - Musey, Luwy AU - Musey L AD - Merck & Co., Inc., Kenilworth, New Jersey. CN - V160-001 Study Group LA - eng SI - ClinicalTrials.gov/NCT01986010 PT - Clinical Trial, Phase I PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - United States TA - J Infect Dis JT - The Journal of infectious diseases JID - 0413675 RN - 0 (Adjuvants, Immunologic) RN - 0 (Antibodies, Neutralizing) RN - 0 (Antibodies, Viral) RN - 0 (Cytomegalovirus Vaccines) SB - IM MH - Adjuvants, Immunologic/administration & dosage MH - Adolescent MH - Adult MH - Antibodies, Neutralizing/immunology MH - Antibodies, Viral/immunology MH - Cytomegalovirus/*immunology MH - Cytomegalovirus Infections/*immunology MH - Cytomegalovirus Vaccines/*immunology MH - Double-Blind Method MH - Enzyme-Linked Immunospot Assay/methods MH - Female MH - Humans MH - Immunity, Cellular/immunology MH - Immunity, Humoral/immunology MH - Immunization/methods MH - Male MH - Middle Aged MH - T-Lymphocytes/immunology MH - Vaccination/methods MH - Virus Replication/*immunology MH - Virus Shedding/immunology MH - Young Adult OTO - NOTNLM OT - cytomegalovirus OT - immunogenicity OT - safety OT - vaccine EDAT- 2019/09/20 06:00 MHDA- 2020/02/23 06:00 CRDT- 2019/09/20 06:00 PHST- 2018/12/20 00:00 [received] PHST- 2019/04/10 00:00 [accepted] PHST- 2019/09/20 06:00 [entrez] PHST- 2019/09/20 06:00 [pubmed] PHST- 2020/02/23 06:00 [medline] AID - 5527176 [pii] AID - 10.1093/infdis/jiz141 [doi] PST - ppublish SO - J Infect Dis. 2019 Jul 2;220(3):411-419. doi: 10.1093/infdis/jiz141.