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Table 2 Frequencies of gene mutations in the series of 796 patients screened for all four genes

From: Prognostic impact of KRAS, NRAS, BRAF, and PIK3CA mutations in primary colorectal carcinomas: a population-based study

Mutated genes KRAS KRAS + PIK3CA NRAS NRAS + PIK3CA BRAF BRAF + PIK3CA PIK3CA Wild-type
Cases 227 36 21 8 16 6 64 418
% 28.5 4.5 2.7 1.0 2.0 0.8 8.0 52.5