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| 1 | Loss of CDX2 expression is associated with poor prognosis in colorectal cancer patients显示文摘AIM:To investigate the clinicopathologic characteristics and prognostic implications associated with loss of CDX2 expression in colorectal cancers(CRCs).METHODS:We immunohistochemically evaluated CDX2 expression in 713 CRCs and paired our findings to clinicopathologic and molecular characteristics of each individual.Endpoints included cytokeratin 7 and CK20 expression,microsatellite instability,Cp G island methylator phenotype,and KRAS and BRAF mutation statuses.Univariate and multivariate survival analysis was performed to reveal the prognostic value of CDX2 downregulation.RESULTS:CDX2 expression was lost in 42(5.9%) patients.Moreover,loss of CDX2 expression was associated with proximal location,infiltrative growth,advanced T,N,M and overall stage.On microscopic examination,loss of CDX2 expression was associated with poor differentiation,increased number of tumor-infiltrating lymphocytes,luminal serration and mucin production.Loss of CDX2 expression was also associated with increased CK7 expression,decreased CK20 expression,Cp G island methylator phenotype,microsatellite instability and BRAF mutation.In a univariate survival analysis,patients with loss of CDX2 expression showed worse overall survival(P < 0.001) and progression-free survival(P < 0.001).In a multivariate survival analysis,loss of CDX2 expression was an independent poor prognostic factor of overall survival [hazard ratio(HR) = 1.72,95%CI:1.04-2.85,P = 0.034] and progression-free survival(HR = 1.94,95%CI:1.22-3.07,P = 0.005).CONCLUSION:Loss of CDX2 expression is associated with aggressive clinical behavior and can be used as a prognostic marker in CRCs. | Jeong Mo Bae Tae Hun Lee Nam-Yun Cho Tae-You Kim Gyeong Hoon Kang | 2015 | World Journal of Gastroenterology2015，21，5： | 14 |
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