在 CVT 试验 ESCUDDO-CVT 研究中接受一剂、两剂和三剂 HPV 疫苗的妇女的扩展随访
在哥斯达黎加 HPV-16/18 疫苗试验 (CVT) 中对接受一剂、两剂和三剂二价 HPV 疫苗的女性进行 15 年的免疫学随访:生成持久性数据:ESCUDDO-CVT 研究
This study is extending follow up of women who participated in the Costa Rica Vaccine Trial (CVT) and received one dose or two doses of the human papillomavirus (HPV) vaccine, along with a group of women who received three doses. It also studies the stability of HPV defenses in these groups of women for up to 20 years after initial vaccination. Studying samples of blood in the laboratory may provide information on how long one, two, and three doses of the vaccine provide protection against HPV. The results of this study may also help researchers learn whether one dose of HPV vaccine is enough to protect against HPV.
研究概览
地位
地位
条件
条件
干预/治疗
干预/治疗
详细说明
PRIMARY OBJECTIVES:
I. Estimate the change in antibody levels between years 11 and 20. II. Estimate the proportion of individuals who become seronegative (i.e.: serorevert) between years 11 and 20.
SECONDARY OBJECTIVES:
I. Assess the prevalence and distribution of type-specific HPV infections at least 18 years after HPV vaccination.
II. Assess the number and type of premalignant lesions present at least 18 years after vaccination.
III. For each dose regimen, characterize HPV-specific memory B cells and long-lived plasma cells present at least 18 years after HPV vaccination, and compare these characteristics with results from earlier time points.
OUTLINE: This is an observational study.
Patients complete a short questionnaire regarding risk factors for HPV infection and undergo collection of blood samples for testing HPV16 and HPV18 levels on study.
研究类型
研究类型
注册 (实际的)
注册
联系人和位置
学习地点
-
-
Guanacaste Province
-
Liberia、Guanacaste Province、哥斯达黎加、50101
- Agencia Costarricense de Investigaciones Biomédicas (ACIB)
-
-
参与标准
资格标准
资格标准
适合学习的年龄
- 孩子
- 成人
- 年长者
接受健康志愿者
有资格学习的性别
取样方法
研究人群
Women who participated in the Costa Rica Vaccine Trial and received the HPV vaccine
描述
Inclusion Criteria:
- Participation in the CVT Long Term Follow-Up (LTFU) study
Exclusion Criteria:
- A random subset of the three-dose women
学习计划
研究是如何设计的?
设计细节
- 观测模型:COHORT
- 时间观点:PROSPECTIVE
团体/队列数
队列和干预
团体/队列团体/队列 |
干预/治疗干预/治疗 |
|---|---|
|
Observational (questionnaire, biospecimen collection)
Patients complete a short questionnaire regarding risk factors for HPV infection and undergo collection of blood samples for testing HPV16 and HPV18 levels on study. |
Undergo collection of blood samples
其他名称:
Complete questionnaire |
研究衡量的是什么?
主要结果指标
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Seropositivity
大体时间:Up to 20 years after initial vaccination
|
Negative/positive status will be assessed using the standard predefined cutoffs established at the testing laboratory. |
Up to 20 years after initial vaccination
|
|
Change in antibody levels
大体时间:Between years 11 and 20 after initial vaccination
|
Will report the geometric mean titer levels and their 95% confidence intervals at years 1, 2, 3, 4, 7, 9, 11, 14, 16, 18, and 20 for the 1-dose, 2-dose and 3-dose groups and for both human papillomavirus (HPV)-16 and HPV-18 antibodies. Will estimate these quantities using a weighted linear mixed models with log-titer level as the dependent variable and year as the independent variable, adjusting for laboratory batch and including a random-effects for participant and, when needed, participant: study year. For the three-dose analysis, will also include a covariate for study group. Moreover, will model the 19-year trend (e.g. excluding peak titers at year 1) by including time as a single continuous variable (i.e. linear effect) and then model time flexibly using a natural spline to assess a potentially non-linear relationship. |
Between years 11 and 20 after initial vaccination
|
|
Proportion of individuals who serorevert
大体时间:Between years 11 and 20 after initial vaccination
|
For each dose regimen and for HPV 16, HPV 18, and a composite endpoint of either HPV type, will estimate the proportion of individuals who serorevert (i.e., become antibody negative by the assay cutoff) in years 1, 2, 3, 4, 7, 9, 11, 14, 16, 18, and 20. Will also report 95% confidence intervals for these estimates. Again, will follow the approach described in our previous work. Note, will consider both standard and updated cutoffs and will use batch-adjusted levels. Can obtain the relative risk for seroreversion and its 95% confidence interval using score tests. Will then use generalized linear mixed models with seroreversion as the outcome and all other parameters similar to above to assess trends over time. |
Between years 11 and 20 after initial vaccination
|
合作者和调查者
调查人员
调查人员
- 首席研究员:Aimee R Kreimer、National Cancer Institute (NCI)
研究记录日期
研究主要日期
学习开始 (实际的)
学习开始
初级完成 (实际的)
初级完成
研究完成 (估计的)
研究完成
研究注册日期
首次提交
首次提交
首先提交符合 QC 标准的
首先提交符合 QC 标准的
首次发布 (实际的)
首次发布
研究记录更新
最后更新发布 (实际的)
最后更新发布
上次提交的符合 QC 标准的更新
上次提交的符合 QC 标准的更新
最后验证
最后验证
更多信息
与本研究相关的术语
其他相关的 MeSH 术语
其他研究编号
其他研究编号
- NCI-2020-07430
- NCI-2020-07430 (注册表标识符:CTRP (Clinical Trial Reporting Program))
- 999917173
- 20G012-07
- CEC-ICIC-E095-2017 (其他标识符:National Cancer Institute)
药物和器械信息、研究文件
研究美国 FDA 监管的药品
研究美国 FDA 监管的设备产品
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