A Pilot & Feasibility Study of the Imaging Potential of EC17 in Subjects Undergoing Parathyroidectomy for Primary Hyperparathyroidism.
试验速览
- 阶段
- 1 期
- 状态
- 已完成
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- The ability of EC17 and the imaging system to detect FRA positive tumors during surgery conducted 2-4 hours post EC-17 administration.
研究概览
简要总结
Primary hyperparathyroidism is a significant medical and public health problem in the world and affects approximately 100,000 new patients in the United States alone. If left untreated this can lead to renal stones, osteoporosis, fatigue, and depression. The best treatment for primary hyperparathyroidism is surgical parathyroidectomy. However surgical parathyroidectomy can be difficult due to the variant location of the parathyroid glands. Up to 5% of patients leave the operating room without surgical cure.
Primary hyperparathyroidism is an ideal disease to investigate intraoperative fluorescent imaging. This would allow surgeons to identify the parathyroid glands and resect the suspicious parathyroid glands. Folate receptor (FR) has been found to be over-expressed in parathyroid tissue and not thyroid issues. An ideal surgical treatment would combine FR-specific fluorescent tracers with intraoperative imaging. It is important to note that FR is expressed only in the proximal tubules of the kidneys, activated macrophages, and in the choroidal plexus. Thus, the false positive detection rate is expected to be extremely low.
A group well known to us in the Netherlands has completed a pilot study utilizing a folate-FITC conjugate in 12 patients with ovarian cancer. Another group of investigators in Mayo have subsequently performed this study on 20 more patients without any serious adverse events (personal communication). They report excellent sensitivity and specificity with this technique with only grade 1 side effects (allergic reaction). All side effects reversed when the injection was halted. Patients with a history of allergic reactions to insect bites should not participate (fluorescein is derived from the firefly insect, folate is an essential vitamin).
A fluorescent contrast agent (folate-FITC or EC17) will be used to determine if it will localize to the primary tumor nodule(s) or mass(es) of patients undergoing parathyroid surgery.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Diagnostic
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adult patients over 18 years of age
- •Patients presenting with primary hyperparathyroidism presumed to be resectable on pre-operative assessment
- •Good operative candidate
- •Subject capable of giving informed consent and participating in the process of consent.
排除标准
- •Pregnant women as determined by urinary or serum beta hCG within 72 hours of surgery
- •Patients with a history of anaphylactic reactions to Folate-FITC or insects
- •Vulnerable patient populations
- •Homeless patients
- •Patients with drug or alcohol dependence
- •Children and neonates
- •Patients unable to participate in the consent process
研究组 & 干预措施
EC17 Injection Group
The group will receive a single dose of EC17, infused over 10 minutes, prior to surgery. Then, during surgery, the EC-17 will be imaged with a camera that the investigators have developed.
干预措施: EC17 (Drug)
结局指标
主要结局
The ability of EC17 and the imaging system to detect FRA positive tumors during surgery conducted 2-4 hours post EC-17 administration.
时间窗: Within two to four hours of injection of EC17
次要结局
- The number of participants that will have an adverse reaction to EC17(Day 1-Day 30)
研究者
Sunil Singhall
Assistant Proffesor of Medicine, Assistant Proffesor of Surgery, Director Thoracic Surgery Research Lab
University of Pennsylvania