Moreover, IHC analysis demonstrated overexpression of mortalin across grade I (Figure 3D) and stage I (Figure 3E), as well as different pathological conditions of oral carcinogenesis, such as inflammation and benign and malignant tumors; however, the expression was not significant in hyperplasia and metastatic tumors included in this study (Figure 3F). Here, HSPA9 is linked to metastatic neoplasm.