For the basic clinicopathological characteristics of SCAP patients, the expression of RPPH1 was significantly correlated with CRP (r = -0.69, Fig. 2A), ALB (r = 0.74, Fig. 2B), NLR (r = -0.88, Fig. 2C), PCT (r = -0.74, Fig. 2D), and NEU (r = -0.84, Fig. 2E) of SCAP patients. Here, RPPH1 is linked to syringocystadenoma papilliferum.