Association between interleukin-4R and TGF-β1 gene polymorphisms and the risk of colorectal cancer in a Korean population.
OBJECTIVE
Colorectal cancer is associated with inflammatory bowel disease. The mechanisms of how different genetic make-ups of cytokines might influence the individual susceptibility to develop particular types of tumours are still unknown. The authors analysed the association between genetic polymorphisms in cytokine/cytokine receptor genes and the risk of colorectal cancer in a Korean population.


METHODS
The authors assessed polymorphisms of the interleukin: IL-1, IL-1R, IL-2, IL-4, IL-4R, IL-10, transforming growth factor (TGF)-β1, IFN-γ genes in Korean patients with colorectal cancer (n = 170) and in a normal healthy control group (n = 130) to investigate the association between theses cytokine gene polymorphisms and the risk of colorectal cancer.


RESULTS
The IL-4R 1902*T allele was found to be associated with an increased risk of colon cancer (P < 0.01, OR = 2.0) and rectal cancer (P < 0.05, OR = 1.8). The IL-4R 1902*C allele was associated with a decreased risk of both colon cancer (P < 0.01, OR = 0.51) and rectal cancer (P < 0.05, OR = 0.5). The TFG-β1 10*T allele was found to be associated with an increased risk of colon cancer (P < 0.00, OR = 2.3) and the TFG-β1 10*C allele with a decreased risk of colon cancer (P < 0.00, OR = 0.43).


CONCLUSIONS
These results suggest that the genetic polymorphisms of IL-4R and TGF-β1 are associated with the risk of colorectal cancer in a Korean population.
Department of Surgery, The Catholic University of Korea, Seoul, Korea.
Y S
YS
Lee
H B
HB
Choi
I K
IK
Lee
T G
TG
Kim
S T
ST
Oh
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D016022:Case-Control Studies; D015179:Colorectal Neoplasms / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D007375:Interleukin-1 / Q000235:genetics; D016753:Interleukin-10 / Q000235:genetics; D007376:Interleukin-2 / Q000235:genetics; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D019948:Receptors, Interleukin-4 / Q000235:genetics*; D053773:Transforming Growth Factor beta1 / Q000235:genetics
D007375:Interleukin-1; D007376:Interleukin-2; D019948:Receptors, Interleukin-4; D053773:Transforming Growth Factor beta1; D016753:Interleukin-10