COL1A1 and prostate cancer: The means of the gene expression level of COL1A1 in prostate cancer tissue in GS 3 + 3, 3 + 4, 4 + 3, 3 + 5, and 4 + 5 were 383, 920.6, 2729, and 927, respectively, while in COL3A1 they were 48.6, 114.2, 198.5, and 163.7, respectively.