A Double-blinded, Placebo-controlled Study of Peanut Sublingual Immunotherapy in Children - DBPC Peanut SLIT
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- Percentage of Subjects Who Can Tolerate the Peanut Oral Food Challenge After 12 Months of Peanut SLIT Dosing
研究概览
简要总结
The specific aim of this study is to determine if peanut allergen-specific SLIT will cause clinical desensitization and tolerance to develop in peanut-allergic young children.
详细描述
In spite of increased recognition and understanding of food allergies, food-induced anaphylaxis remains the single most common cause of anaphylaxis seen in hospital emergency departments, accounting for about one third of anaphylaxis cases seen. It is estimated that about 30,000 food-induced anaphylactic events are seen in U.S. emergency departments each year and that about 200 fatal cases occur in the U.S. each year. Either peanuts or tree nuts cause more than 80% of these reactions. No treatments are available and avoidance is the only approved intervention.
The goal of this study is to investigate peanut sublingual immunotherapy (SLIT) as a treatment for children with peanut allergy. This study is primarily designed to evaluate the efficacy and safety of peanut SLIT compared to placebo after 12 months. Secondarily, the study is designed to evaluate the efficacy of extended maintenance dosing of peanut SLIT in inducing lasting tolerance after discontinuation of the peanut SLIT. Mechanistic studies will be completed concurrently as exploratory endpoints to understand changes in the allergic immune response related to peanut SLIT.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Triple (Participant, Care Provider, Investigator)
入排标准
- 年龄范围
- 1 Year 至 11 Years(Child)
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Peanut IgE > 7kU/L (> 2kU/L for children aged 2 years and under) AND
- •History of significant clinical symptoms within 60 minutes after the ingestion of peanuts.
排除标准
- •History of severe life-threatening anaphylaxis to peanut, OR
- •Medical history that would prevent a DBPCFC to peanut, OR
- •Subjects with wheat or oat allergy (which are used in the placebo), OR
- •Unable to cooperate with challenge procedures, OR
- •Unable to be reached by telephone for follow-up
研究组 & 干预措施
Blinded Peanut SLIT
Blinded subjects who received peanut sublingual drops for the initial 12 month blinded phase of the study.
干预措施: Peanut SLIT (Drug)
Blinded Placebo SLIT
Blinded subjects who received placebo sublingual drops for the initial 12 month blinded phase of the study.
干预措施: Placebo SLIT (Drug)
Ext. maint. open label peanut SLIT
After completing the blinded phase of the study, subjects receiving Blinded Peanut SLIT continued on extended maintenance open-label peanut SLIT for the duration of the study. Subjects receiving Blinded Placebo SLIT were crossed over and underwent the 12 month buildup protocol on open label peanut SLIT and then continued on extended maintenance treatment for the duration of the study.
干预措施: Peanut SLIT (Drug)
Early unblinded peanut SLIT
Subjects who were unblinded prematurely during the blinded phase of the study and then re-enrolled as an open label cohort.
干预措施: Peanut SLIT (Drug)
Pilot peanut SLIT rollover cohort
Subjects from the original phase 1 study of peanut SLIT (NCT00429429) who were rolled over into the current protocol as an open label peanut SLIT cohort.
干预措施: Peanut SLIT (Drug)
结局指标
主要结局
Percentage of Subjects Who Can Tolerate the Peanut Oral Food Challenge After 12 Months of Peanut SLIT Dosing
时间窗: 12 months
Upon completion of 12 months of peanut SLIT treatment, subjects underwent a double-blind placebo controlled food challenge (DBPCFC) to assess desensitization (an increase in reaction threshold while on therapy). A DBPCFC involves the ingestion of small increasing amounts of peanut up to a cumulative total amount. The primary clinical efficacy outcome of the study was the percentage of peanut allergic subjects who completed a 2500 mg peanut protein DBPCFC without developing symptoms after 12 months of peanut SLIT therapy.
次要结局
- Percentage of Subjects Tolerating a Peanut Oral Food Challenge 2-4 Weeks After Discontining Peanut SLIT Dosing(36-60 months)
