From: The TGFBR1*6A allele is not associated with susceptibility to colorectal cancer in a Spanish population: a case-control study
Specimens
n
9/9
6/9
6/6
p
Tumour location
Proximal colon
93
77
15
1
Distal colon
135
99
34
2
p = 0.109
Rectum
100
88
10
p = 0.024
Rectum sigma
37
32
4
UK
35
Stage
I-II (low)
139
108
28
3
III-IV (high)
38
31
7
0
p = 0.66
223