Cyclin D1 gene polymorphism and familial prostate cancer: the AA genotype of A870G polymorphism is associated with prostate cancer risk in men aged 70 years or older and metastatic stage.
BACKGROUND
Cyclin D1 is a key protein involved in cell cycle regulation. A common A870G single nucleotide polymorphism in exon 4 of the cyclin D1 gene (CCND1) has an effect on the transcription of two different cyclin D1 mRNAs. Association of the genetic polymorphism of A870G of CCND1 with several cancer risks has been reported.


METHODS
We performed a case-control study consisting of 99 familial prostate cancer cases and 115 noncancer controls to examine the genotypic frequency of the CCND1 polymorphism.


RESULTS
We did not observe a significant association of the genotypic frequency of CCND1 with overall cases and controls. However, the AA genotype of CCND1 showed a tendency to increase prostate cancer risk in subjects aged 70 years or older (odds ratio [OR] = 2.14, 95% confidence interval [CI] = 0.86-5.27, p = 0.096). Stratification of cases according to clinical stages showed that the AA genotype was significantly frequently observed in metastatic cancer in comparison with GG + AG genotypes (OR = 3.03, 95% CI = 1.11-8.23, p = 0.026).


CONCLUSIONS
The present study suggested that the genetic polymorphism might be associated with familial prostate cancer risk in a Japanese population.
Department of Urology, Gunma University School of Medicine, 3-39-22 Showa-machi, Maebashi, 371-8511, Gunma, Japan.
Hidekazu
H
Koike
Kazuhiro
K
Suzuki
Tetsuo
T
Satoh
Nobuaki
N
Ohtake
Tomoyuki
T
Takei
Seiji
S
Nakata
Hidetoshi
H
Yamanaka
D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D019938:Cyclin D1 / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D020641:Polymorphism, Single Nucleotide; D011471:Prostatic Neoplasms / Q000235:genetics* / Q000473:pathology
D019938:Cyclin D1