Fine mapping association study and functional analysis implicate a SNP in MSMB at 10q11 as a causal variant for prostate cancer risk.

نویسندگان

  • Bao-Li Chang
  • Scott D Cramer
  • Fredrik Wiklund
  • Sarah D Isaacs
  • Victoria L Stevens
  • Jielin Sun
  • Shelly Smith
  • Kristen Pruett
  • Lina M Romero
  • Kathleen E Wiley
  • Seong-Tae Kim
  • Yi Zhu
  • Zheng Zhang
  • Fang-Chi Hsu
  • Aubrey R Turner
  • Jan Adolfsson
  • Wennuan Liu
  • Jin Woo Kim
  • David Duggan
  • John Carpten
  • S Lilly Zheng
  • Carmen Rodriguez
  • William B Isaacs
  • Henrik Grönberg
  • Jianfeng Xu
چکیده

A single nucleotide polymorphism (SNP) at 10q11 (rs10993994) in the 5' region of the MSMB gene was recently implicated in prostate cancer risk in two genome-wide association studies. To identify possible causal variants in the region, we genotyped 16 tagging SNPs and imputed 29 additional SNPs in approximately 65 kb genomic region at 10q11 in a Swedish population-based case-control study (CAncer of the Prostate in Sweden), including 2899 cases and 1722 controls. We found evidence for two independent loci, separated by a recombination hotspot, associated with prostate cancer risk. Among multiple significant SNPs at locus 1, the initial SNP rs10993994 was most significant. Importantly, using an MSMB promoter reporter assay, we showed that the risk allele of this SNP had only 13% of the promoter activity of the wild-type allele in a prostate cancer model, LNCaP cells. Curiously, the second, novel locus (locus 2) was within NCOA4 (also known as ARA70), which is known to enhance androgen receptor transcriptional activity in prostate cancer cells. However, its association was only weakly confirmed in one of the three additional study populations. The observations that rs10993994 is the strongest associated variant in the region and its risk allele has a major effect on the transcriptional activity of MSMB, a gene with previously described prostate cancer suppressor function, together suggest the T allele of rs10993994 as a potential causal variant at 10q11 that confers increased risk of prostate cancer.

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منابع مشابه

Analysis of the 10q11 Cancer Risk Locus Implicates MSMB and NCOA4 in Human Prostate Tumorigenesis

Genome-wide association studies (GWAS) have established a variant, rs10993994, on chromosome 10q11 as being associated with prostate cancer risk. Since the variant is located outside of a protein-coding region, the target genes driving tumorigenesis are not readily apparent. Two genes nearest to this variant, MSMB and NCOA4, are strong candidates for mediating the effects of rs109939934. In a c...

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عنوان ژورنال:
  • Human molecular genetics

دوره 18 7  شماره 

صفحات  -

تاریخ انتشار 2009