To assess the ability of the 4-RBP-based classifier to forecast the risk of PM in GC patients, we developed a risk score according to the coefficients of the four RBPs in Lasso Logistics: Risk Score = (1.08004578 * expression value of COL14A1) + (0.31114396 * expression value of TNS1) - (0.95036402 * expression value of NUSAP1) - (0.02147674 * expression value of YWHAE). This evidence concerns the gene YWHAE and gastric cancer.