A Prospective Comparison of the Magnitude and Character of the Immune Response to Influenza Vaccine in Immunosuppressed Renal Transplant Patients and Healthy Age-matched Volunteers
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 97
- 试验地点
- 1
- 主要终点
- To determine the effect of immunosuppressive regimens on the magnitude and character of the adaptive immune response to flu vaccine
研究概览
简要总结
Influenza (Flu) vaccine is recommended for kidney transplant patients who are at least 6 months post-transplant. The influenza vaccine stimulates the immune system to builds protective antibodies against the flu virus.
Previous research has shown that adult kidney transplant patients are not able to form as much of these protective antibodies as compared to healthy volunteers. Research has also suggested that different immunosuppressive medicines may have different effects on antibody formation. In this study, we hope to evaluate these differences in more detail.
In recent years, increasingly effective, but also increasingly complex, immunosuppressive regimens have been developed, however, there has been little detailed systematic study of the immune changes that occur in response to vaccination with these newer immunosuppressive regimens.Current policies on vaccination of transplant recipients are generic and continue to be based on old concepts rather than on any new understanding of the effects of these newer therapies on the immune system.
We hope to improve our understanding of the effects of the immunosuppressive regimens in use today (calcineurin-inhibitor, or CNI, and sirolimus-based regimens) on immune response to flu vaccine. Such knowledge will be critical to helping clinicians develop strategies for getting desirable immune responses while not causing rejection.
研究设计
- 研究类型
- Observational
- 观察模型
- Cohort
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 59 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Male or female patients between 18 and 59 years of age
- •Greater than six months post deceased or living donor renal transplant
- •Patients capable of understanding the purposes and risks of the study, who can give written informed consent and who are willing to participate in and comply with the study.
- •Patients with no known contraindications to flu vaccine (e.g. egg allergy, prior serious adverse reaction to flu vaccine, current febrile illness, marked leukopenia (WBC < 2500 cells/ml)
- •Women of childbearing potential must have a negative serum pregnancy test within 7 days of study enrollment and must not be breast-feeding.
排除标准
- •Patients with evidence of an active systemic infection
结局指标
主要结局
To determine the effect of immunosuppressive regimens on the magnitude and character of the adaptive immune response to flu vaccine
时间窗: 7, 14, 28 and 90 days post vaccination
To determine the effects of chronic immunosuppressive therapies on innate immunity during response to flu vaccine
时间窗: 7, 14, 28 and 90 days post vaccination
To define the transcriptional and protein signatures of the response to flu vaccination in patients on conventional immunosuppressive regimens compared to healthy volunteers
时间窗: 7, 14, 28 and 90 days post vaccination
次要结局
未报告次要终点
研究者
Christian P Larsen, MD, PhD
Chairman, Dept. of Surgery
Emory University