CYP26A1 and pachyonychia congenita: Receiver operating characteristic (ROC) curve showed that CYP26A1 had a satisfactory efficiency in predicting OS, DSS, and PFI of PC patients (Figures 2(d)–2(f), OS: 1-year AUC = 0.511, 3-year AUC = 0.660, 5-year AUC = 0.795; DSS: 1-year AUC = 0.514, 3-year AUC = 0.660, 5-year AUC = 0.791; PFI: 1-year AUC = 0.479, 3-year AUC = 0.675, 5-year AUC = 0.742).