Table 1. KRAS mutations observed in human cancer in order of decreasing frequency (http://www.sanger.co.uk/cosmic; accessed 14^th July 2015).

KRAS genotype	Mutation	Cases	Frequency
G12D	c.35G>A	10719	33.8%
G12V	c.35G>T	7138	22.5%
G13D	c.38G>A	3959	12.5%
G12C	c.34G>T	3713	11.7%
G12A	c.35G>C	1694	5.3%
G12S	c.34G>A	1507	4.7%
G12R	c.34G>C	1024	3.2%
G13C	c.37G>T	276	0.9%
Q61H	c.183A>C	144	0.5%