MKI67 and neoplasm: Known prognostic factors are age [9, 22, 23, 24, 25, 26], tumor stage/classification systems [27, 28, 29, 30, 31, 32], histopathologic factors like Hyams grading [11, 23, 28, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45] or the Ki‐67 labeling index (Ki‐67 LI) [46, 47, 48] and therapy‐related factors [4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21].