CD133 scores of dMMR cases (range = 0–10 units; mean ± SD =2.5 ± 3.6 units) were also lower (p = 0.00004) than pMMR CRC (range = 0–15 units; mean ± SD = 9.4 ± 5.1 units). The gene discussed is PROM1; the disease is colorectal carcinoma.