PMID- 32233961 OWN - NLM STAT- MEDLINE DCOM- 20210621 LR - 20240330 IS - 2164-554X (Electronic) IS - 2164-5515 (Print) IS - 2164-5515 (Linking) VI - 16 IP - 6 DP - 2020 Jun 2 TI - Immunogenicity and safety of a quadrivalent meningococcal tetanus toxoid-conjugate vaccine (MenACYW-TT) in adults 56 years of age and older: a Phase II randomized study. PG - 1299-1305 LID - 10.1080/21645515.2020.1733868 [doi] AB - MenACYW-TT is an investigational quadrivalent meningococcal conjugate vaccine intended for the prevention of invasive meningococcal disease (IMD) caused by serogroups A, C, W, and Y in individuals aged 6 weeks and above. This Phase II, randomized, open-label, multicenter, exploratory study assessed the safety and immunogenicity of MenACYW-TT compared with a quadrivalent meningococcal polysaccharide vaccine (MPSV4) in 301 healthy adults aged >/=56 y in the US (NCT01732627). Participants were randomized 2:1 to receive MenACYW-TT or MPSV4. Serum bactericidal assays using human (hSBA) or baby rabbit (rSBA) complement were used to measure functional antibodies against meningococcal serogroups A, C, W, and Y at baseline and 30 d post-vaccination. Safety data were collected up to 30 d post-vaccination. Proportions of study participants with hSBA titers >/=1:8 against serogroups A, C, W, and Y were increased at Day 30 compared with baseline in both vaccine groups. The proportions of participants with hSBA titers >/=1:8 after MenACYW-TT vaccination were comparable to those after MPSV4 vaccination for serogroups A and C (A: 93.8% vs. 85.1%; C: 74.9% vs. 62.8%) and distinctly higher than after MPSV4 for serogroups W and Y (W: 79.5% vs. 60.6%; Y: 80.5% vs. 59.6%). Proportions of participants with rSBA titers >/=1:8 were comparable between vaccine groups for all four serogroups. The reactogenicity profiles of both vaccines were similar. Most unsolicited adverse events (AEs) were of Grade 1 or Grade 2 intensity, and no serious AEs were reported. The MenACYW-TT conjugate vaccine was well tolerated and immunogenic in adults aged >/=56 y. FAU - Kirstein, Judith AU - Kirstein J AUID- ORCID: 0000-0001-9665-8525 AD - Advanced Clinical Research , West Jordan, UT, USA. FAU - Pina, Miriam AU - Pina M AD - Clinical Development, Sanofi Pasteur , Swiftwater, PA, USA. FAU - Pan, Judy AU - Pan J AD - Clinical Development, Sanofi Pasteur , Swiftwater, PA, USA. FAU - Jordanov, Emilia AU - Jordanov E AD - Clinical Development, Sanofi Pasteur , Swiftwater, PA, USA. FAU - Dhingra, Mandeep S AU - Dhingra MS AUID- ORCID: 0000-0002-2507-7165 AD - Clinical Development, Sanofi Pasteur , Swiftwater, PA, USA. LA - eng SI - ClinicalTrials.gov/NCT01732627 PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20200401 PL - United States TA - Hum Vaccin Immunother JT - Human vaccines & immunotherapeutics JID - 101572652 RN - 0 (Antibodies, Bacterial) RN - 0 (Meningococcal Vaccines) RN - 0 (Tetanus Toxoid) RN - 0 (Vaccines, Conjugate) SB - IM MH - Antibodies, Bacterial MH - Female MH - Humans MH - Male MH - *Meningococcal Infections/prevention & control MH - *Meningococcal Vaccines/immunology MH - Middle Aged MH - Tetanus Toxoid MH - Vaccines, Conjugate/immunology PMC - PMC7482642 OTO - NOTNLM OT - MPSV4 OT - MenACYW-TT OT - invasive meningococcal disease OT - older adults OT - vaccine EDAT- 2020/04/03 06:00 MHDA- 2021/06/22 06:00 PMCR- 2020/04/01 CRDT- 2020/04/03 06:00 PHST- 2020/04/03 06:00 [pubmed] PHST- 2021/06/22 06:00 [medline] PHST- 2020/04/03 06:00 [entrez] PHST- 2020/04/01 00:00 [pmc-release] AID - 1733868 [pii] AID - 10.1080/21645515.2020.1733868 [doi] PST - ppublish SO - Hum Vaccin Immunother. 2020 Jun 2;16(6):1299-1305. doi: 10.1080/21645515.2020.1733868. Epub 2020 Apr 1.