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Age-Associated Differences in Germinal Center Responses to Influenza and Rabies Vaccination in Humans

2026年10月27日 更新者:Washington University School of Medicine

This study is being done to better understand how the immune system responds to vaccination against influenza and rabies. Researchers want to study how immune responses develop and change over time in the blood and in the lymph nodes that drain the vaccination site, following vaccination with two vaccines licensed by the U.S. Food and Drug Administration (FDA): the seasonal trivalent influenza vaccine (TIV) and the rabies vaccine (RabAvert). By studying these samples, researchers hope to learn how the body produces high-quality, long-lasting antibody and memory immune responses after vaccination. The study will also compare immune responses in younger adults to immune responses in older adults, because prior research suggests that the immune system's ability to respond to vaccination weakens with age.

研究概览

研究类型

介入性

注册 (估计的)

40

阶段

  • 第四阶段

联系人和位置

本节提供了进行研究的人员的详细联系信息,以及有关进行该研究的地点的信息。

学习联系方式

  • 姓名:Patrick Olson, MD
  • 电话号码:314-454-0058
  • 邮箱:olsonp@wustl.edu

研究联系人备份

学习地点

    • Missouri
      • St Louis、Missouri、美国、63110
        • 招聘中
        • Washington University
        • 接触:
        • 接触:
        • 首席研究员:
          • Patrick Olson, MD
        • 副研究员:
          • Rachel Presti, MD

参与标准

研究人员寻找符合特定描述的人,称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。

资格标准

适合学习的年龄

18年 及以上 (成人、年长者)

接受健康志愿者

不

有资格学习的性别

全部

描述

Inclusion Criteria:

  1. Healthy participants 18 to 40 years of age or ≥65 years of age.
  2. Able to understand and give informed consent.
  3. Willing to receive RabAvert vaccine.
  4. Willing to receive TIV (trivalent influenza vaccine).
  5. In stable health, as determined by medical history and targeted physical exam related to this history.
  6. Willing to give blood and optional lymph node FNA (fine needle aspiration) samples.

Exclusion Criteria:

  1. Has a history of severe local or systemic reactions to any vaccination.
  2. Has a history of severe allergic reaction to any component of the rabies or influenza vaccines.
  3. Has a history of prior rabies vaccination, receipt of rabies post-exposure prophylaxis or rabies immunoglobulin, or known or suspected prior exposure to rabies virus.
  4. Has received any influenza vaccines ≤ 180 days prior to the day of injection (Day 1).
  5. Has a current or previous diagnosis of immunocompromising condition to include human immunodeficiency virus, immune-mediated disease requiring immunosuppressive treatment, or other immunosuppressive condition.
  6. Has received systemic immunosuppressants or immune-modifying drugs for > 14 days in total within 6 months prior to Screening (for corticosteroids ≥ 10 mg/day of prednisone equivalent) or is anticipating the need for immunosuppressive treatment at any time during participation in the study.
  7. Is acutely ill or febrile (temperature >38.0 C [100.4F] less than 72 hours prior to or at the Day 1 visit. Participants who meet this criterion may be rescheduled.
  8. Currently has symptomatic acute or unstable chronic disease requiring medical or surgical care, to include significant change in therapy or hospitalization, at the discretion of the investigator.
  9. History of excessive alcohol consumption, drug abuse, psychiatric conditions, social conditions or occupational conditions that in the opinion of the investigator would preclude compliance with the study.
  10. Has received any vaccine ≤ 28 days prior to the injection (Day 1) or plans to receive a vaccine within 28 days before or after the study injection. These participants may be rescheduled.
  11. Pregnant women and nursing mothers or women who are planning to become pregnant for the study duration.
  12. Have donated blood, blood products or bone marrow within 30 days before study vaccination, plan to donate blood at any time during the duration of participant study participation, or plan to donate blood within 30 days after the last blood draw.
  13. Any condition in the opinion of the investigator that would interfere with the proper conduct of the trial.
  14. Unwilling to use an effective method of contraception if you are of childbearing potential.

学习计划

本节提供研究计划的详细信息,包括研究的设计方式和研究的衡量标准。

研究是如何设计的?

设计细节

  • 主要用途:基础科学
  • 分配:不适用
  • 介入模型:单组作业
  • 屏蔽:无(打开标签)

武器和干预

参与者组/臂
干预/治疗
实验性的:Vaccination

Standard, seasonal flu vaccine

Standard, seasonal flu vaccines

Rabies vaccine for pre-exposure

研究衡量的是什么?

主要结果指标

结果测量
大体时间
Rabies-specific antibody titers at day 29 compared to pre-vaccination baseline.
大体时间:From vaccination day 1 to day 29
From vaccination day 1 to day 29

合作者和调查者

在这里您可以找到参与这项研究的人员和组织。

研究记录日期

这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查,以确保它们在发布到公共网站之前符合特定的质量控制标准。

研究主要日期

学习开始 (实际的)

2026年9月25日

初级完成 (估计的)

2027年2月1日

研究完成 (估计的)

2027年9月25日

研究注册日期

首次提交

2026年10月20日

首先提交符合 QC 标准的

2026年10月27日

首次发布 (实际的)

2026年11月3日

研究记录更新

最后更新发布 (实际的)

2026年11月3日

上次提交的符合 QC 标准的更新

2026年10月27日

最后验证

2026年10月1日

更多信息

与本研究相关的术语

其他研究编号

  • 202607188
  • U19AI181103 (美国 NIH 拨款/合同)

计划个人参与者数据 (IPD)

计划共享个人参与者数据 (IPD)?

是的

IPD 计划说明

The data to be generated and shared from this proposal will include clinical data with low-risk for identification, clinical from patients from human cohorts (described in more detail in the proposal) and a wealth of immunological data generated from assays performed on the clinical specimens derived from these subjects. The types of data to be uploaded include mainly .xls(x) or fasta files but also potentially .pdf, .doc(x), and .txt files

IPD 共享时间框架

Data will be deposited in the ImmPort shared data base, National Center for Biotechnology Information (NCBI), (GenBank, SRA, and dbGaP), MassIVE, PDB or EMDB data repositories. Each study deposited in ImmPort, PDB, and EMBD will be assigned a permanent digital object identifier (DOI) that will be cited in each publication. Each study or sequence(s) deposited in GenBank, SRA, or dbGaP will be assigned a permanent accession number that also will be cited in each publication. These persistent unique identifiers are searchable on Google and/or Pubmed. Each proteomic study deposited in MassIVE will be assigned a permanent ProteomeXchange accession that will be cited in each publication and is searchable on the MassIVE website. All of the data repositories to be used require rich metadata to be submitted along with each dataset to ensure that data is easy to find, access, and identify.

IPD 共享访问标准

Data deposited on GenBank, SRA, MassIVE, PDB or EMDB will not be controlled and will be accessible for free download by the wider community. For data in ImmPort, users will need to register and agree to a Data Use Agreement prior to free download. Summaries of studies and the contents of measured variables deposited on dbGaP will be made public, while access to individual-level data will require authorization.

IPD 共享支持信息类型

  • 研究方案
  • 企业社会责任

药物和器械信息、研究文件

研究美国 FDA 监管的药品

是的

研究美国 FDA 监管的设备产品

不

在美国制造并从美国出口的产品

不

此信息直接从 clinicaltrials.gov 网站检索,没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求,请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改,我们的网站上也会自动更新.

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