Delta-like Protein 3 (DLL3)- Targeted PET Imaging in Neuroendocrine Carcinoma
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- Changes in vital signs after administration of the DLL3-targeted tracer
研究概览
简要总结
The objective of the study is to evaluate the diagnostic value of DLL3-targeted PET/CT in patients with suspected or histologically confirmed neuroendocrine carcinoma, and to compare with conventional imaging modalities.
详细描述
This study is designed to investigate DLL3-targeted PET/CT as a noninvasive approach for detecting tumor lesions in patients with suspected or confirmed neuroendocrine carcinoma.
In this research, patients with neuroendocrine carcinoma or highly suspected recurrence detection underwent contemporaneous DLL3-targeted PET/CT and conventional imaging (such as CT, MRI or 18F-FDG) either for an initial assessment or for metastases or highly suspected recurrence detection. Tumor uptake was quantified by the maximum standardized uptake value (SUVmax). By correlating immunohistochemistry with tumor uptake of the DLL3-targeted tracer, the investigators will explore the feasibility of visualizing tumor DLL3 expression using DLL3-targeted PET. The numbers of positive tumor lesions of conventional imaging and DLL3-targeted PET/CT were recorded by visual interpretation. The diagnostic accuracy of DLL3-targeted was calculated and compared to conventional imaging. Intertumoral heterogeneity was assessed using the coefficient of variation (CV) of SUVmax across all lesions within each patient.
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 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Adult patients (aged 18 years or older);
- •Patients with suspected, newly diagnosed, and previously treated neuroendocrine carcinoma(supporting evidence may include imaging findings and pathology report);
- •Serum ProGRP or NSE level ≥ 3 times the upper limit of normal;
- •Patients who were able to provide informed consent (signed by participant, parent or legal representative) and assent according to the guidelines of the Clinical Research Ethics Committee.
- •Estimated life expectancy of more than 3 months, as assessed by the investigator, and ability to comply with study procedures and scheduled visits;
排除标准
- •The inability or unwillingness of the research participant or legal representative to provide written informed consent.
- •Inability to complete PET/CT imaging.
研究组 & 干预措施
DLL3-targeted PET/CT
Each subject receives a single intravenous injection of DLL3-targeted probe and undergoes PET/CT imaging within the specified time.
干预措施: Diagnostic Test: conventional imaging (CT, MRI or 18F-FDG PET/CT), DLL3-targeted PET/CT (Diagnostic Test)
结局指标
主要结局
Changes in vital signs after administration of the DLL3-targeted tracer
时间窗: 1 day
Vital signs will be monitored before and after administration of the DLL3-targeted tracer, including body temperature, pulse rate, respiratory rate, and blood pressure. Units of Measure: Body temperature (°C); Pulse rate (beats/min); Respiratory rate (breaths/min); Blood pressure (mmHg).
Radiation absorbed dose of the DLL3-targeted PET tracer in normal organs and whole body
时间窗: 1 year
Radiation dosimetry will be calculated using serial whole-body PET/CT imaging after administration of the DLL3-targeted tracer. Time-activity curves will be generated for major organs, and absorbed doses will be estimated using standard internal dosimetry software (e.g., OLINDA/EXM). Unit of Measure: Absorbed radiation dose (mGy/MBq).
次要结局
- Correlation between tumor DLL3 expression assessed by immunohistochemistry (H-score) and tumor uptake of the DLL3-targeted PET tracer (SUVmax)(1 year)