Figure 1From: BRAF, KRAS and PIK3CA mutations in colorectal serrated polyps and cancer: Primary or secondary genetic events in colorectal carcinogenesis? KRAS , PIK3CA and BRAF mutation frequencies between MSI/MSS CRC and CR polyps. The frequency of KRAS, PIK3CA and BRAF mutations in MSI and MSS CRC was based on previous results of our group in Velho [10]. In brackets is represented the total of cases that were analyzed for each gene.Back to article page