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Articles by E. H Lips
Total Records ( 1 ) for E. H Lips
  A. M Pittman , S Naranjo , E Webb , P Broderick , E. H Lips , T van Wezel , H Morreau , K Sullivan , S Fielding , P Twiss , J Vijayakrishnan , F Casares , M Qureshi , J. L Gomez Skarmeta and R. S. Houlston
 

Recent genome-wide scans for colorectal cancer (CRC) have revealed the SMAD7 (mothers against decapentaplegic homolog 7) gene as a locus associated with a modest, but highly significant increase in CRC risk. To identify the causal basis of the association between 18q21 variation and CRC, we resequenced the 17-kb region of linkage disequilibrium and evaluated all variants in 2532 CRC cases and 2607 controls. A novel C to G single nucleotide polymorphism (SNP) at 44,703,563 bp was maximally associated with CRC risk (P = 5.98 x 10–7; ≥1.5-fold more likely to be causal than other variants). Using transgenic assays in Xenopus laevis as a functional model, we demonstrate that the G risk allele leads to reduced reporter gene expression in the colorectum (P = 5.4 x 10–3). Electrophoretic mobility shift assays provided evidence for the role of Novel 1 in transcription factor binding. We propose that the novel SNP we have identified is the functional change leading to CRC predisposition through differential SMAD7 expression and, hence, aberrant TGF-beta signaling.

 
 
 
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