HNF1B and JAZF1 genes, diabetes, and prostate cancer risk.
BACKGROUND
Epidemiologic studies have shown that men with type II diabetes have a lower risk of prostate cancer than non-diabetic men. Recently, common variants in two genes, HNF1B and JAZF1, were found to be associated with both of these diseases.


METHODS
We examined whether the relationship between HNF1B and JAZF1 variants and decreased prostate cancer risk may potentially be mediated through diabetes in two large prospective studies, the Cancer Prevention Study II Nutrition Cohort and the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial.


RESULTS
Three HNF1B SNPS, rs11649743, rs4430796, and rs7501939, were associated with decreased risk of prostate cancer and were also associated, with marginal statistical significance, with increased risk of diabetes. The JAZF1 SNPs rs6968704 and rs10486567 were associated with decreased risk of prostate cancer but were not associated with diabetes. All five SNP-prostate cancer relationships did not substantially differ when the analyses were stratified by diabetic status or when diabetic status was controlled for in the model. Furthermore, the association of diabetes with prostate cancer was not altered when the SNPs were included in the logistic model.


CONCLUSIONS
These findings indicate that the HNF1B variants are directly associated with both diabetes and prostate cancer, that diabetes does not mediate these gene variant-prostate cancer relationships, and the relationship between these diseases is not mediated through these gene variants.
Stevens
Victoria L
VL
Department of Epidemiology, American Cancer Society, Atlanta, Georgia 30303-1002, USA. victoria.stevens@cancer.org
Ahn
Jiyoung
J
Sun
Juzhong
J
Jacobs
Eric J
EJ
Moore
Steven C
SC
Patel
Alpa V
AV
Berndt
Sonja I
SI
Albanes
Demetrius
D
Hayes
Richard B
RB
D000368:Aged; D016022:Case-Control Studies; D056970:Co-Repressor Proteins; D004268:DNA-Binding Proteins; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology / Q000235:genetics*; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D051539:Hepatocyte Nuclear Factor 1-beta / Q000235:genetics*; D006801:Humans; D015810:Linkage Disequilibrium / Q000235:genetics; D008297:Male; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000235:genetics*; D016017:Odds Ratio; D020641:Polymorphism, Single Nucleotide / Q000235:genetics; D011471:Prostatic Neoplasms / Q000453:epidemiology / Q000235:genetics*; D012307:Risk Factors
D056970:Co-Repressor Proteins; D004268:DNA-Binding Proteins; C496495:HNF1B protein, human; C430460:JAZF1 protein, human; D009363:Neoplasm Proteins; D051539:Hepatocyte Nuclear Factor 1-beta