Univariate analysis showed that pathological stage (HR=1.604, P<0.001), tumor (T) stage (HR=1.537, P<0.001), lymph node (N) stage (HR=1.668, P<0.001), and distant metastasis (M) stage (HR=1.955, P=0.02), along with COL6A6 expression (HR=0.794, P=0.003; Figure 4D) were significantly associated with OS. Here, COL6A6 is linked to neoplasm.