Overall, the β-catenin staining in tumor samples of CPC;Apcfl/fl;Klk6+/+ mice had the higher intensity score (average score of three) compared to the intensity of β-catenin staining in the tumors of CPC;Apcfl/fl;Klk6fl/fl mice (average score of two). This evidence concerns the gene KLK6 and neoplasm.