COL6A5 and neoplasm: Clinicopathological analysis revealed that high expression of COL9A3 and COL6A5 was correlated with poor tumour differentiation (P = 0.006 and 0.002, respectively), positive lymph node metastasis (both P < 0.001), large tumour size (both P < 0.001), advanced T stage (both P < 0.001), and late TNM stage (both P < 0.001).