From: Low Percentage of KRAS Mutations Revealed by Locked Nucleic Acid Polymerase Chain Reaction: Implications for Treatment of Metastatic Colorectal Cancer
KRAS wild-type
KRAS mutated
n
129
84
Age, median (range)
62
77
(39–86)
(37–88)
Sex
M
74
46
F
55
38
Primary tumor site
Colon
107
73
Rectum
22
11
Tissue for KRAS analysis
Primary
105
69
Metastases
24
15