PLAUR and colorectal carcinoma: Concerning CRC, uPAR expression was found in 33/51 (64.7%) RAS mutated samples with 20/51 (39.2%) strong positivity; in RAS wild-type samples only 15/57 (26.3%) showed positivity and 12/57 (21%) high positivity (score > 3) for uPAR expression (Table 1).