−160C/A polymorphism in the E‐cadherin gene promoter and risk of hereditary, familial and sporadic prostate cancer

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Abstract
The E‐cadherin (CDH1) gene has been associated with prostate carcinogenesis. The C/A polymorphism −160 base pairs relative to the transcription start site has been shown to decrease gene transcription. We analyzed the association between this polymorphism and the risk of sporadic, familial (2 close relatives) and hereditary (3 or more close relatives) prostate cancer. We combined data from 3 population‐based epidemiologic studies in Sweden encompassing altogether 1,036 prostate cancer cases and 669 controls that were genotyped for the short nucleotide polymorphism. Odds ratios with 95% confidence intervals were estimated through unconditional logistic regression. We found no significant association between the A‐allele and sporadic (OR = 1.0; 95% CI = 0.8–1.2) or familial (OR = 1.4; 95% CI = 0.9–2.2) prostate cancer. In contrast, risk of hereditary cancer was increased among heterozygote CA carriers (OR = 1.7; 95% CI = 1.0–2.7) and particularly among homozygote AA carriers (OR = 2.6; 95% CI = 1.4–4.9). Our data indicate that the −160 single nucleotide polymorphism in CDH1 is a low‐penetrant prostate cancer susceptibility gene that might explain a proportion of familial and notably hereditary prostate cancer.
Funding Information
  • Swedish Cancer Society (Cancerfonden)
  • Stiftelsen för Strategisk Forskning
  • Spear Grant from Västerbottens Läns Landsting