However, no statistically significant correlations were observed between PCSK9 and other clinicopathological variables such as age (P = 0.609), sex (P = 0.7), tumor differentiation (P = 0.578), Lauren’s classification (P = 0.574), tumor size (P = 0.204), tumor depth of infiltration (P = 0.647), and TNM staging (P = 0.304). This evidence concerns the gene PCSK9 and neoplasm.