ArticlePapillomavirus research (Amsterdam, Netherlands)2017
HPV SEROSTATUS PRE- AND POST-VACCINATION IN A RANDOMIZED PHASE II PREPAREDNESS TRIAL AMONG YOUNG WESTERN CAPE, SOUTH AFRICAN WOMEN: THE EVRI TRIAL.
Article in Papillomavirus research (Amsterdam, Netherlands), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01489527 (Preparedness Study), which is not on this map. Cited by 3 papers, 1 of them a synthesis that pooled it.
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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.
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.
Preparedness Study: Efficacy of HPV Vaccine to Reduce HIV Infection
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Human papillomavirus (HPV) vaccination for the prevention of cervical cancer and other HPV-related diseases: a network meta-analysis.The Cochrane database of systematic reviews · 2025Pooled it
- Contribution of Surface-Exposed Loops on the HPV16 Capsid to Antigenic Domains Recognized by Vaccine or Natural Infection Induced Neutralizing Antibodies.Microbiology spectrum · 2022Article
- Review
Corrections and comments
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Authors and funding
12 authors.
Funding
Abstract
backgroundHPV antibodies are a marker of past exposure to the virus. Our objective was to assess HPV serostatus pre- and post-vaccination among HIV-negative women.
methodsWomen aged 16-24 years old were randomized in a placebo controlled trial utilizing the 4-valent HPV (4vHPV) vaccine (NCT01489527, clinicaltrials.gov). Participants (n=389) received the 4vHPV vaccine or placebo following a three dose schedule. Sera were collected at Day 1 and Month 7 for assessment of HPV 6, 11, 16, and 18 neutralizing antibody levels using a multiplex competitive Luminex immunoassay (Merck) based on detecting the L1 capsid antigen for each HPV type.
resultsSeroprevalence was 73% for HPV6, 47% for HPV11, 33% for HPV16, and 44% for HPV18. Seroprevalence for any HPV type did not significantly differ by age or lifetime number of partners. The majority of participants (64%) had two or more 4vHPV antibodies present at enrollment and 12% had antibodies to all four. Among women in the vaccine arm, those that were seropositive for HPV16 at enrollment had higher titers at month 7 compared to women that were seronegative for HPV16 at enrollment; this trend holds for the other HPV types as well. Seroconversion among baseline seronegative participants in the placebo group ranged from 5% for HPV16 to 23% for HPV6.
conclusionHPV seroprevalence was high in this population, emphasizing the need to vaccinate prior to sexual debut.
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Registered trials
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