Cox proportional regression analysis of the predictive value for SCAP patient survival revealed that IL-6 level (HR = 1.013, 95% CI: 11.004–1.022; p = 0.006) and PSI score (HR = 1.034, 95% CI: 1.014–1.054; p = 0.001) were independent predictors of 30-day mortality after adjusting for IL-8, IL-10, AnxA1 level, and CURB-65 score (Table 6). Here, IL6 is linked to syringocystadenoma papilliferum.