Figure 1

Correlations between the mRNA expression of different collagen genes and OS. (A) Univariate analysis. (B) Multivariate analysis for genes with p < 0.1 in the univariate analysis. (C) Kaplan–Meier survival curves for the five collagen genes with p < 0.1 in the univariate analysis. (D) Representative images of immunohistochemical staining for COL4A5 expression in GC tumor and normal tissues (400×). Unless specified, throughout this essay, the statistical significance was annotated by the number of stars (*: P-value < 0.05; **: P-value < 0.01; ***: P-value < 0.001; **** P < 0.0001).