PRKCI and osteosarcoma: Table 3 shows that the expression level of PRKCI was significantly correlated with histological types (p = 0.0015), but not with other demographic and clinical factors (including gender, age, TNM, and differentiation). The expression of PRKCI in osteosarcoma patients is shown in Figure 7, from which we could intuitively see that compared with nontumor adjacent tissues, the expression of PRKCI in osteosarcoma was significantly upregulated, and the expression in osteoblastic osteosarcoma was higher than that in chondrosarcoma.