Variables

GG genotype (%)

GA genotype (%)

AA genotype (%)

G allele frequency

A allele frequency

p value

Gender

Males

50 (40.3)

35 (28.2)

39 (31.5)

0.54

0.46

0.26

Females

20 (55.6)

8 (22.2)

8 (22.2)

0.67

0.33

Age at diagnosis (years)

≤45 Y

16 (50.0)

7 (21.9)

9 (28.1)

0.61

0.39

0.68

>45 Y

54 (42.2)

36 (28.1)

38 (29.7)

0.56

0.44

Histological type

Squamous cell carcinoma

27 (34.2)

22 (27.8)

30 (38.0)

0.48

0.52

0.02

Adenocarcinoma

43 (53.1)

21 (25.9)

17 (21.0)

0.66

0.34

TNM stage

Early stage (I & II)

34 (56.6)

13 (21.7)

13 (21.7)

0.68

0.33

0.03

Advanced stage (III & IV)

36 (36.0)

30 (30.0)

34 (34.0)

0.51

0.49

Distant metastases

Positive

15 (35.7)

10 (23.8)

17 (40.5)

0.48

0.52

0.14

Negative

55 (46.6)

33 (28.0)

30 (25.4)

0.61

0.39

Squamous cell carcinoma grades

Grade 1

17 (39.5)

11 (25.6)

15 (34.9)

0.52

0.48

0.15

Grade 2

7 (31.8)

9 (40.9)

6 (27.3)

0.52

0.48

Grade 3

3 (21.4)

2 (14.3)

9 (64.3)

0.29

0.71

Adenocarcinoma grades

Grade 1

11 (78.6)

1 (7.1)

2 (14.3)

0.82

0.18

0.18

Grade 2

12 (54.5)

7 (31.8)

3 (13.6)

0.70

0.30

Grade 3

20 (44.4)

13 (28.9)

12 (26.7)

0.59

0.41

Family history of any cancer

Yes

13 (68.4)

3 (15.8)

3 (15.8)

0.76

0.24

0.05

No

57 (40.4)

40 (28.4)

44 (31.2)

0.55

0.45