As shown in Table 1, Cox univariate survival analysis indicated that age (p=0.01), grade (p < 0.001), TNM stage (p < 0.001), lymph node metastasis (p < 0.01), invasion depth (p < 0.001), distant metastasis (p < 0.001), and MT1G expression (p < 0.001) were important parameters affecting the duration of OS, while multivariate Cox survival analysis showed that age (p < 0.01), grade (p < 0.01), and MT1G expression (p < 0.001) were independent factors of poor ccRCC patient prognosis (Figure 4(c)). Here, MT1G is linked to nonpapillary renal cell carcinoma.