Marker for digestive system cancer detection and application thereof

The invention discloses a marker for digestive system cancer detection and application of the marker. The marker is a combination of Vimentin and CD11b. The expression conditions of the marker in different individuals show the special phenomena of ultrahigh expression in peripheral blood of a cancer patient, higher expression in peripheral blood of an early cancer patient and almost no expressionin peripheral blood of a healthy volunteer, and the marker can be used for digestive system tumor early screening and solid tumor treatment dominant population including gastric cancer and evaluatingthe treatment effect. 本发明公开了一种用于消化系统癌症检测的标记物及其应用，所述的标记物为Vimentin和CD11b的组合。所述标记物在不同个体中的表达情况表现出"癌症患者外周血中超高表达，早癌患者外周血中较高表达，健康志愿者外周血中几乎无表达"的特有现象，可用于包括如胃癌的消化系统肿瘤早期筛查和实体肿瘤治疗优势人群及评价治疗疗效。