KLK3 and cancer: Before the index date, no significant differences were found between patients with GD and controls in the rate of cancer screening tests performed at least once; colonoscopy was performed in 5.3% vs. 3%, occult blood in stool in 7.2% vs. 6.5%, mammography in 13.4% vs. 10.1% of women, PAP smear in 9% vs. 10.2% of women, PSA test in 11.5% vs. 12% of men, and skin screen in 0% in both patients with GD and controls.