Common variants at 8q24 are associated with prostate cancer risk in Taiwanese men.
BACKGROUND
Recently, independent genome-wide scans have found multiple genetic variants at 8q24 to be associated with prostate cancer risk. This study was performed to determine whether two of the variants more strongly associated with prostate cancer risk in European and American populations, specifically rs16901979 and rs6983561, were also associated with prostate cancer risk in Taiwanese men.


METHODS
We conducted a case-control study comprising of 340 prostate patients and 336 healthy controls. Genotyping was performed for rs16901979 and rs6983561. Their association with disease stage, tumor grade, PSA level and disease aggressiveness was also determined.


RESULTS
The risk allele A of rs16901979 was associated with a 1.28-fold increase in prostate cancer risk (P = 0.046), and the risk allele C of rs6983561 was associated with a 1.40-fold increase in prostate cancer risk (P = 0.006). When compared with controls, the risk allele of rs6983561 was more frequent in patients with more aggressive disease. Analysis of the cumulative risk of rs1447295, a confirmed risk variant, and one of these markers showed that compared to men who do not have any of these risk variants, men who carry any combination of 1 or 2 risk genotypes have a gradually increased prostate cancer risk (P for trend <0.001).


CONCLUSIONS
The variants rs16901979 and rs6983561 at 8q24 are associated with prostate cancer risk in Taiwanese men.
Chen
Marcelo
M
Division of Preventive Medicine, Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
Huang
Yu-Chuen
YC
Yang
Stone
S
Hsu
Jong-Ming
JM
Chang
Yen-Hwa
YH
Huang
William Ji-Shian
WJ
Chen
Yi-Ming Arthur
YM
D000368:Aged; D044466:Asian People / Q000235:genetics*; D002898:Chromosomes, Human, Pair 8; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011471:Prostatic Neoplasms / Q000209:etiology / Q000235:genetics*; D012306:Risk; D013624:Taiwan