RPP30 and gastric cancer: These parameters were then included in the multivariate Cox regression model, which revealed that the primary therapy outcome (p < 0.001, HR = 0.243, 95% CI = 0.156–0.379), age (p = 0.012, HR = 1.748, 95% CI = 1.133–2.698), and RPP30 expression (p < 0.001, HR = 2.069, 95% CI = 1.346–3.181) could serve as independent prognostic factors for GC (Supplementary Table S3).