PPP4C and gastric cancer: Moreover, we found that GC patients with high expression of PPP4C (hazard ratio [HR] 0.70, 95% confidence interval [CI] 0.50–0.99, p = 0.046) had superior overall survival (OS), while GC patients with high expression of IL4R (HR 1.59, 95% CI 1.09–2.33, p = 0.016) and BMPR2 (HR 1.55, 95% CI 1.09–2.22, p = 0.015) had inferior OS (Fig. 8D).