Clinical Significance of Detecting CEA and CK20 mRNA-positive Cells in Colorectal Cancer Patients
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 256
- 试验地点
- 1
- 主要终点
- CEA mRNA positive circulating tumor cells in colorectal cancer patients
研究概览
简要总结
To determine whether the presence of circulating/disseminated tumor cells (CTCs/DTCs) in the blood and bone marrow of colorectal cancer (CRC) patients with localized disease is a negative prognostic factor, and to find correlations with other clinical/pathological disease characteristics.
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
- 是
入选标准
- •- colorectal adenocarcinoma
排除标准
- •prior neoadjuvant chemoradiotherapy
- •prior colorectal cancer
- •cancer duplicity
结局指标
主要结局
CEA mRNA positive circulating tumor cells in colorectal cancer patients
时间窗: 1 day
The absolute gene expression of carcinoembryonic antigen (CEA mRNA) in circulating tumor cells (CTCs) purified from peripheral blood of patients before colorectal surgery will be measured using real-time RT-PCR method. The CEA gene expression will be normalized per microgram of total mRNA. The cut-off values identifying presence or absence of CEA mRNA positive CTCs in patients was established using the maxstat() function from the maxstat R package as a mode value of estimates obtained for 10 000 random samples. CEA mRNA levels above 190 CEA mRNA copies per microgram of RNA will indicate the presence of the CTCs in the peripheral blood sample.
次要结局
- Cancer specific survival in CTC positive CRC patients(10 years)