Evidence map›Paper›PMID 24633366›Full record

Trial reportHuman vaccines & immunotherapeutics2014

Clinical evaluation for batch consistency of an inactivated enterovirus 71 vaccine in a large-scale phase 3 clinical trial.

Yi-Juan Chen, Fan-Yue Meng, Qunying Mao, Jing-Xin Li, Hua Wang, Zheng-Lun Liang, Yun-Tao Zhang, Fan Gao, Qing-Hua Chen, Yuemei Hu and 5 more

Open access · bronzeAbstract readClinical Trial, Phase IIIMulticenter StudyRandomized Controlled Trial
In one paragraph

Trial report in Human vaccines & immunotherapeutics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
2.8field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 32 citations in OpenAlex.

  1. Trial
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  5. Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Global emergence of Enterovirus 71: a systematic review.Beni-Suef University journal of basic and applied sciences · 2022
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. Is a multivalent hand, foot, and mouth disease vaccine feasible?Human vaccines & immunotherapeutics · 2015
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 5 institutions in 3 countries.

Yi-Juan ChenSchool of Public Health; Southeast University; Nanjing, Jiangsu Province, PR China.
Fan-Yue MengJiangsu Provincial Center for Disease Control and Prevention; Nanjing, Jiangsu Province, PR China.
Qunying MaoNational Institute for Food and Drug Control; Beijing, PR China.
Jing-Xin LiJiangsu Provincial Center for Disease Control and Prevention; Nanjing, Jiangsu Province, PR China; College of Pharmacy; Third Military Medical University & National Engineering Research Center for Immunological Products; Chongqing, PR China.
Hua WangJiangsu Provincial Center for Disease Control and Prevention; Nanjing, Jiangsu Province, PR China.
Zheng-Lun LiangNational Institute for Food and Drug Control; Beijing, PR China.
Yun-Tao ZhangBeijing Vigoo Biological Co., Ltd; Beijing, PR China.
Fan GaoNational Institute for Food and Drug Control; Beijing, PR China.
Qing-Hua ChenBeijing Vigoo Biological Co., Ltd; Beijing, PR China.
Yuemei HuJiangsu Provincial Center for Disease Control and Prevention; Nanjing, Jiangsu Province, PR China.
Zi-Jun GeSchool of Public Health; Nantong University; Nantong, Jiangsu Province, PR China.
Xin YaoNational Institute for Food and Drug Control; Beijing, PR China.
Hui-Jie GuoBeijing Vigoo Biological Co., Ltd; Beijing, PR China.
Feng-Cai ZhuJiangsu Provincial Center for Disease Control and Prevention; Nanjing, Jiangsu Province, PR China.
Xiu-Ling LiBeijing Vigoo Biological Co., Ltd; Beijing, PR China.
Beijing Administration Institute · CNJiangsu Provincial Center for Disease Control and Prevention · CNSino Biological (China) · CNNantong University · CNSoutheast University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The demonstration of batch-to-batch consistency to confirm the reliability of the manufacturing process has become a mandatory step in vaccine development. This is a post-hoc analysis aimed to provide more solid evidence on the immunogenicity and consistency of 3 consecutive batches of a novel inactivated enterovirus 71 (EV71) vaccine. In total 10 245 healthy Chinese children aged 6-35 months had been recruited and randomized to receive one of 3 batches of EV71 vaccine or placebo according to a two-dose immunization schedule in a phase 3 clinical trial. Blood samples were taken just before and 28 days after vaccinations for serological tests of EV71 neutralizing antibody (NTAb) titer from the subjects. Among them, 7263 (70.9%) subjects with seronegative EV71 NTAb at baseline and the data of serological tests post-vaccination available were included for the analysis. The results showed that EV71 vaccine elicited high geometric mean titers (GMTs) of 407.0 U/mL (95% CI, 373.5-443.6) for batch 1, 468.1 U/mL (95% CI, 432.2-507.0) for batch 2, and 520.6 U/mL (95% CI, 481.2-563.3) for batch 3. The two-sided 95% confidence intervals (CIs) for the GMT ratios between each pair of vaccine batches were all within an interval of [0.67, 1.5]. Subjects who received EV71 vaccines demonstrated significant higher GMTs than those received placebos did (P<0.001). In terms of incidence of both local and general adverse reactions, no differences were found among 3 vaccine batches and placebos. EV71 vaccine was highly immunogenic in children, and the 3 consecutive batches were well consistent.

Indexed as

Child, PreschoolDouble-Blind MethodDrug CompoundingEnterovirus A, HumanEnterovirus InfectionsFemaleHumansInfantMaleReproducibility of ResultsVaccinationVaccines, InactivatedVaccines, Inactivatedbatch consistencyenterovirus 71immunogenicityinactivated vaccinesafety

Identifiers

PMID24633366
PMCPMC4896521
OpenAlexW2317931274

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.