Table 2.

Distribution of KRAS and NRAS mutations in the 96 CRC patient samples.

Gene	Exon	Codon	Mutation	Numbers of mutations(% of 96)
KRAS	2	12,13	G12D, G12A, G12V, G12S, G12R, G12C, G13D	47 (48.96)
NRAS	2	12,13	G12D, G12S,G13D, G13R, G12C, G12V, G12A, G13V	5 (5.21)
NRAS	3	59,61	A59D, Q61R, Q61K, Q61L, Q61H	3 (3.12)
NRAS	4	117,146	K117N, A146T	0