Table 1.

KRAS genotype frequencies in the study population

Study population	Genotype	Frequency N %	OR (95% CI)	p value
Controls	wild (TT)	221/269 (82.2)	1.0
	variable (TG/GG)	48/269 (17.8)
Sporadic cases	wild (TT)	434/524 (82.8)	0.96 (0.65-1.40)	0.814
	variable (TG/GG)	90/524 (17.2)
Familial cases	wild (TT)	135/165 (81.8)	1.02 (0.62-1.69)	0.929
	variable (TG/GG)	30/165 (18.2)
BRCA carriers	wild (TT)	26/29 (89.7)	0.53 (0.15-1.83)	0.316
	variable (TG/GG)	3/29 (10.3)
BRCA1 carriers	wild (TT)	18/20 (90.0)	0.51 (0.12-2.28)	0.379
	variable (TG/GG)	2/20 (10.0)
BRCA2 carriers	wild (TT)	8/9 (88.9)	0.58 (0.07-4.71)	0.606
	variable (TG/GG)	1/9 (11.1)
Non-BRCA carriers	wild (TT)	109/136 (80.1)	1.14 (0.68-1.93)	0.623
	variable (TG/GG)	27/136 (19.9)