CXCL5 and pachyonychia congenita: Univariable Cox regression analysis revealed that nodal status (P<0.001), T stage (P=0.015), pelvic LNM (P<0.001), and higher preoperative serum CXCL5 levels (P<0.001) were associated with shorter disease-free survival (DFS) in the PC cohort (Table 2).