PROM1 and colorectal carcinoma: Similarly, CD133 scores of the right-sided pMMR CRC (range = 0–15; mean ± SD = 9.2 ± 5.0 units) did not differ (p = 0.625) from those on the left (range = 0–15; mean ± SD = 9.6 ± 5.3 units).