A Phase 2a Study to Evaluate the Safety, Tolerability, and Immunogenicity of One Dose of NDV-3A Vaccine in Patients With STAT3-Mutated Hyper-IgE Syndrome
试验速览
- 阶段
- 2 期
- 状态
- 终止
- 入组人数
- 3
- 试验地点
- 1
- 主要终点
- Percent of Each Group With at Least a Four-fold Increase in Anti rAls3 Antibody Titer.
研究概览
简要总结
Background:
AD-HIES is a disease that weakens the immune system. It puts people at risk for infections, particularly Staph and Candida infections. Researchers want to test a vaccine that may help keep people from getting these infections, which would help people with AD-HIES.
Objective:
To test the new vaccine NDV-3A for protection against infection from the yeast Candida and the bacterium Staphylococcus aureus (Staph).
Eligibility:
Adults ages 18-55 who have AD-HIES
Healthy volunteers ages 18-55
Design:
Participants will have 6-7 study visits over 6-7 months. They will also be contacted by phone in between some visits.
Participants will be screened with a medical history, physical exam, and blood and urine tests.
Participants will have 2 baseline visits. They will have repeat the screening tests. They will have samples of saliva, stool, skin, mucus (oral, nasal, and/or vaginal) collected. Vaginal and stool samples are optional. Any eczema on their skin will be looked at.
Participants will fill out symptom diary cards to record how they feel.
Participants will have the NDV-3A vaccine injected into a muscle in the arm.
Participants will return the next 2 days. They will have a physical exam. Blood will be collected.
Participants will have 2 more follow-up visits at the NIH. They will have a physical exam. They will have blood, saliva, stool, skin, vaginal fluid, and/or mucus samples collected. Vaginal and stool samples are optional.
Participants will be called once a month for 5 months after the vaccination. There is an optional visit about 6 weeks after the vaccination. Participants will provide a blood sample at this visit.
详细描述
Autosomal-dominant hyper-IgE syndrome (AD-HIES) is characterized by recurrent Staphylococcus aureus and Candida epithelial infections, which is thought to be due, in part, to a lack of Th17 cell differentiation, thus impairing epithelial immunity. Treatment of AD-HIES is primarily supportive with prophylactic antibiotics; however, this is limited by microbial resistance and intolerance of medications, and infections do still occur. Immunological intervention with a vaccine could improve quality of life by preventing these infections altogether.
The NDV-3A vaccine consists of a recombinant protein derived from the Candida Als3 adhesion protein. This protein is homologous to surface proteins on S aureus and has been shown in preclinical studies to protect against both intravascular and subcutaneous challenge with S aureus. Therefore, NDV-3A represents not only the first antifungal vaccine, but also the first vaccine to provide cross-kingdom protection. In Phase 1 and Phase 2 studies in healthy volunteers (150 receiving vaccine), the safety profile of this vaccine is very reassuring as the vaccine elicits a strong antibody response after a single dose in all vaccinees as well as a Th1 and/or Th17 response in the majority of vaccinees. We will enroll 20 healthy adult volunteers and 20 adults with AD-HIES in an open-label, single-dose study to assess the immunological response to and the safety/tolerability of the NDV-3A vaccine. We anticipate an increase in baseline anti-Als3 IgG within 2 weeks post-vaccination.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- 未提供
排除标准
- 未提供
研究组 & 干预措施
NDV 3A vaccine
Participants will receive a single dose of 0.5 mL (300 micrograms of rAls3) administered via IM injection.
干预措施: NDV-3A (Drug)
结局指标
主要结局
Percent of Each Group With at Least a Four-fold Increase in Anti rAls3 Antibody Titer.
时间窗: 2 weeks after vaccination
Antibody titer
次要结局
- Number of Participants With Serious Adverse Events That Led to Study Termination.(Up to 6 months)
- Anti-Als3 Antibody Titers at 6 Months After Vaccination in Patients With AD HIES and Healthy Volunteers.(6 months)