Clinical feature Statistical test Significant genes Associated with                 Associated with Time to Death Cox regression test N=0 AGE Spearman correlation test N=16 older N=6 younger N=10 GENDER t test N=0 HISTOLOGICAL TYPE ANOVA test N=6 RADIATIONS RADIATION REGIMENINDICATION t test N=0 DISTANT METASTASIS ANOVA test N=1 LYMPH NODE METASTASIS ANOVA test N=4 NUMBER OF LYMPH NODES Spearman correlation test N=0 NEOPLASM DISEASESTAGE ANOVA test N=2