PMID- 24108780 OWN - NLM STAT- MEDLINE DCOM- 20140808 LR - 20211021 IS - 1556-679X (Electronic) IS - 1556-6811 (Print) IS - 1556-679X (Linking) VI - 20 IP - 12 DP - 2013 Dec TI - Immunogenicity, safety, and lot consistency of a novel inactivated enterovirus 71 vaccine in Chinese children aged 6 to 59 months. PG - 1805-11 LID - 10.1128/CVI.00491-13 [doi] AB - The determination of lot-to-lot consistency in the manufacturing process is a mandatory step in the clinical development of the novel enterovirus 71 (EV71) vaccine. A phase III, randomized, placebo-controlled, double-blind trial assessed the lot consistency, immunogenicity, and safety of the EV71 vaccine in children aged 6 to 59 months. Healthy children (n = 1,400) received one of three lots of the EV71 vaccine containing 400 U of EV71 antigen or a placebo at days 0 and 28. Blood samples were collected before dose 1 and at 28 days after dose 2 (day 56) for an anti-EV71 neutralizing antibody (NTAb) assay. The geometric mean titer (GMT) and the seropositivity rates (with titers of >/=1:8) were compared at day 56. After each dose, the solicited injection site and general adverse events (AEs) were recorded for 7 days, and unsolicited AEs were recorded for 28 days. At day 56, the seropositivity rates ranged from 99.7% to 100% for the vaccine groups. The NTAb GMTs for the vaccine were 140.3 (95% confidence interval [CI], 117.8 to 167.1), 141.5 (95% CI, 118.0 to 169.6), and 146.6 (95% CI, 122.5 to 175.3). The two-sided 95% CI of the log difference in GMTs between the pairs of lots were between -0.176 and 0.176, therefore meeting the predefined equivalence criteria. The percentages of subjects reporting any injection site AEs, general AEs, or serious AEs were similar across the four vaccination groups. In conclusion, the demonstration of consistency between the manufacturing lots confirms for the purposes of clinical development the reliability of the EV71 vaccine production process. (This study has been registered at ClinicalTrials.gov under registration no. NCT01636245.). FAU - Hu, Yue-Mei AU - Hu YM AD - Jiang-Su Provincial Center for Disease Control and Prevention, Nanjing, China. FAU - Wang, Xu AU - Wang X FAU - Wang, Jun-Zhi AU - Wang JZ FAU - Wang, Ling AU - Wang L FAU - Zhang, Yong-Jie AU - Zhang YJ FAU - Chang, Lin AU - Chang L FAU - Liang, Zheng-Lun AU - Liang ZL FAU - Xia, Jie-Lai AU - Xia JL FAU - Dai, Qi-Gang AU - Dai QG FAU - Hu, Ya-Ling AU - Hu YL FAU - Mao, Qun-Ying AU - Mao QY FAU - Zhu, Feng-Cai AU - Zhu FC FAU - Song, Yu-Fei AU - Song YF FAU - Gao, Fan AU - Gao F FAU - Chen, Jiang-Ting AU - Chen JT LA - eng SI - ClinicalTrials.gov/NCT01636245 PT - Clinical Trial, Phase III PT - Journal Article PT - Randomized Controlled Trial DEP - 20131009 PL - United States TA - Clin Vaccine Immunol JT - Clinical and vaccine immunology : CVI JID - 101252125 RN - 0 (Antibodies, Neutralizing) RN - 0 (Antibodies, Viral) RN - 0 (Placebos) RN - 0 (Vaccines, Inactivated) RN - 0 (Viral Vaccines) SB - IM MH - Antibodies, Neutralizing/*blood MH - Antibodies, Viral/*blood MH - Child, Preschool MH - China MH - Double-Blind Method MH - Enterovirus A, Human/*immunology MH - Enterovirus Infections/immunology/*prevention & control MH - Female MH - Humans MH - Infant MH - Male MH - Placebos MH - Vaccination/adverse effects MH - Vaccines, Inactivated/administration & dosage/adverse effects/immunology MH - Viral Vaccines/administration & dosage/adverse effects/*immunology PMC - PMC3889509 EDAT- 2013/10/11 06:00 MHDA- 2014/08/13 06:00 PMCR- 2014/06/01 CRDT- 2013/10/11 06:00 PHST- 2013/10/11 06:00 [entrez] PHST- 2013/10/11 06:00 [pubmed] PHST- 2014/08/13 06:00 [medline] PHST- 2014/06/01 00:00 [pmc-release] AID - CVI.00491-13 [pii] AID - 00491-13 [pii] AID - 10.1128/CVI.00491-13 [doi] PST - ppublish SO - Clin Vaccine Immunol. 2013 Dec;20(12):1805-11. doi: 10.1128/CVI.00491-13. Epub 2013 Oct 9.