PMID- 30724658 OWN - NLM STAT- MEDLINE DCOM- 20200228 LR - 20200309 IS - 2164-554X (Electronic) IS - 2164-5515 (Print) IS - 2164-5515 (Linking) VI - 15 IP - 5 DP - 2019 TI - Immunogenicity and safety of the new MMR vaccine containing measles AIK-C, rubella Takahashi, and mumps RIT4385 strains in Japanese children: a randomized phase I/II clinical trial. PG - 1139-1144 LID - 10.1080/21645515.2019.1578591 [doi] AB - Domestic measles, mumps, and rubella combined (MMR) vaccines were discontinued in 1993 in Japan because of the unexpected high incidence of aseptic meningitis. The introduction of an effective MMR vaccine with lower reactogenicity has been expected. A new MMR vaccine (JVC-001) was developed, using mumps RIT4385 strain in combination with Japanese measles AIK-C strain and rubella Takahashi strain (MR) vaccine. An open-label, randomized, phase I/II clinical study was conducted in 100 healthy Japanese children equally randomized to a JVC-001 group and an MR with monovalent mumps vaccine (Hoshino strain) group. Immunogenicity was assessed using a neutralization test (NT) for measles, hemagglutination inhibition (HI) test for rubella, and NT and enzyme-linked immune-sorbent assay (ELISA) for mumps strain with different genotypes (genotype A, B, D and G) on Day 0 and Day 42-56. Solicited and unsolicited adverse events (AEs) were recorded. Seroconversion rates of measles and rubella were both 100%. JVC-001 induced higher immunogenicity against mumps virus genotype G with seroconversion rate of 77.1% (95% confidence interval [CI]: 62.7-88.0%) compared to 65.3% (95% CI: 50.4-78.3%) in the control group. Geometric mean titer (GMT) was 12.5 (95% CI: 8.6-18.3) in the JVC-001 group and 7.1 (95% CI: 5.0-10.1) in the control group. JVC-001 also induced good immunogenicity against other genotypes (A, B and D). There was no apparent difference in the incidence of AEs between JVC-001 and the control groups. JVC-001 is safe and induces effective immunogenicity against measles, mumps, and rubella compared with the currently marketed vaccines in Japan. FAU - Nakayama, Tetsuo AU - Nakayama T AD - a Kitasato Institute for Life Sciences, Laboratory of Viral Infection , Tokyo , Japan. FAU - Eda, Masahiro AU - Eda M AD - b Japan Vaccine Co., Ltd , Tokyo , Japan. FAU - Hirano, Motonori AU - Hirano M AD - b Japan Vaccine Co., Ltd , Tokyo , Japan. FAU - Goto, Wakako AU - Goto W AD - b Japan Vaccine Co., Ltd , Tokyo , Japan. LA - eng PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20190422 PL - United States TA - Hum Vaccin Immunother JT - Human vaccines & immunotherapeutics JID - 101572652 RN - 0 (Antibodies, Neutralizing) RN - 0 (Antibodies, Viral) RN - 0 (Measles-Mumps-Rubella Vaccine) SB - IM MH - Antibodies, Neutralizing/blood MH - Antibodies, Viral/*blood MH - Female MH - Humans MH - *Immunogenicity, Vaccine MH - Infant MH - Japan MH - Male MH - Measles/*prevention & control MH - Measles-Mumps-Rubella Vaccine/administration & dosage/*immunology MH - Mumps/*prevention & control MH - Rubella/*prevention & control MH - Seroconversion MH - Vaccination PMC - PMC6605871 OTO - NOTNLM OT - Immunogenicity OT - MMR OT - RIT4385 OT - mumps virus genotype G OT - neutralizing antibody EDAT- 2019/02/07 06:00 MHDA- 2020/02/29 06:00 PMCR- 2019/04/22 CRDT- 2019/02/07 06:00 PHST- 2019/02/07 06:00 [pubmed] PHST- 2020/02/29 06:00 [medline] PHST- 2019/02/07 06:00 [entrez] PHST- 2019/04/22 00:00 [pmc-release] AID - 1578591 [pii] AID - 10.1080/21645515.2019.1578591 [doi] PST - ppublish SO - Hum Vaccin Immunother. 2019;15(5):1139-1144. doi: 10.1080/21645515.2019.1578591. Epub 2019 Apr 22.