Characteristics  N (%)      Gender   Male 24(68.57%) Female 11(31.43%) Age   ≥59 19(54.29%) ＞59 16(45.71%) Histopathology WHO Classification   Well-differentiated 6(17.14%) Moderately-differentiated 19(54.29%) poorly-differentiated 10(28.57%) T classification   T2 20(57.14%) T3-T4 15(42.86%) N classification   N0 29(82.86%) N1 6(17.14%) M classification   M0 30(85.71%) M1 5(14.29%) Clinical stage   I-II 24(68.57%) III-IV 11(31.43%) Expression level of HMGB1   Low expression 20(57.14%) High expression  15(42.86%) Status at follow-up   Alive and lost to follow-up 7(20.00%) Cancer relation death 28(80.00%)

Table 1: Clinicopathological characteristics of patient samples and expression of HMGB1 in PC, a Postoperative staging was classified according to the WHO TNM classification of tumours of the exocrine pancreas