Role of p53 and p73 genes polymorphisms in susceptibility to esophageal cancer: A case control study in a northern Indian population

Meenakshi Umar, Rohit Upadhyay, Rohini Khurana, Shaleen Kumar, Uday Chand Ghoshal, Balraj Mittal

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Genetic variants in p53 and in its homologue p73 may modulate Esophageal Cancer (EC) risk because they are supposed to influence cell cycle progression, apoptosis and DNA repair. Therefore, we aimed to evaluate the association of p53 intron3 16 bp duplication and p73 G4C14-to-A4T14 polymorphisms with susceptibility to EC in a northern Indian population in 255 EC patients and 255 age and sex matched healthy controls. We found that p53 intron3 16 bp duplication polymorphism was not associated with EC and its clinical characteristics. However, p73 G4C14-to-A4T14 polymorphism was associated with significant higher risk of EC (OR = 1.74, 95% CI = 1.16-2.60, P = 0.007) in an allele dose-dependent manner (P trend = 0.0047). Stratification ofsubjects on the basisofclinical characteristics showed that p73 AT genotype carriers were at significant increased risk of developing esophageal squamous cell carcinoma (OR = 1.78, 95% CI = 1.18-2.67, P = 0.006) at middle third tumor location (OR = 1.87, 95% CI = 1.18-2.97, P = 0.007) with lymph node metastasis (OR = 1.77, 95% CI = 1.04-3.02, P = 0.035). No interaction with environmental risk factors was observed with any of the studied polymorphisms. In summary, p73 G4C14-to-A4T14 polymorphism but not the p53 intron3 16 bp duplication polymorphism is associated with EC and its clinical characteristics in northern Indian population.

Original languageEnglish
Pages (from-to)1153-1162
Number of pages10
JournalMolecular Biology Reports
Issue number2
Publication statusPublished - 1 Feb 2012



  • Cancer susceptibility
  • Esophageal cancer
  • Genetic polymorphism
  • P53 and p73

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

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