Fig. 3From: Dickkopf-related protein 1, a new biomarker for local immune status and poor prognosis among patients with colorectal liver Oligometastases: a retrospective studya Analysis of the expression of DKK1 in normal colorectal tissues and CRCs in TCGA data sets. b Analysis of the expression of DKK1 in different stages of CRCs. c Kaplan–Meier curves comparing 3 year overall survival (3y OS) of stage IV patients with high and low DKK1 expression. *: 0.01 ≤ P < 0.05; **: 0.001 ≤ P < 0.01Back to article page