MDM2 SNP 285 is Associated with Reduced Lung Cancer Risk in Bangladeshi Population

Mymensingh Med J. 2020 Jan;29(1):108-114.

Abstract

The MDM2 gene is a negative regulator of p53, which has been linked to lung cancer. Here, we have evaluated the association of MDM2 SNP 285 G>C (rs117039649) and SNP 354 A>G (rs769412) with lung cancer risk in Bangladeshi population at the National Institute of Cancer Research and Hospital, Dhaka, Bangladesh from July 2015 to June 2017. We have genotyped 126 lung cancer patients and 133 healthy controls from Bangladesh by PCR-RFLP method for this study. Statistical analyses were performed to define the associations. Multivariate logistic regression revealed that MDM2 SNP 285 decreases the risk of lung cancer (GC+CC vs. GG: OR = 0.29, 95% CI = 0.15-0.56, p<0.005). A stratification analysis confirmed that this protective status is extended to younger people, male, overweight people, and smokers (GC+CC vs. GG: OR = 0.25-0.29, 95% CI = 0.11-0.69, p<0.01). However, we did not find any association of SNP 354 with lung cancer risk in Bangladeshi population (p>0.05). The present data indicated that MDM2 SNP 285 G>C (rs117039649) reduces the chance of lung cancer development in Bangladeshi population. However, MDM2 SNP 354 A>G (rs769412) has no such association in the same population.

MeSH terms

  • Asian People* / ethnology
  • Asian People* / genetics
  • Bangladesh
  • Case-Control Studies
  • Genetic Predisposition to Disease*
  • Humans
  • Lung Neoplasms / genetics*
  • Male
  • Polymorphism, Genetic
  • Polymorphism, Single Nucleotide
  • Proto-Oncogene Proteins c-mdm2 / genetics*
  • Risk Factors
  • Tumor Suppressor Protein p53 / genetics*

Substances

  • TP53 protein, human
  • Tumor Suppressor Protein p53
  • MDM2 protein, human
  • Proto-Oncogene Proteins c-mdm2