Source:Cancer Epidemiology, Volume 49
Author(s): Sanzana Fareen Rivu, Mohd Nazmul Hasan Apu, Samia Shabnaz, Noor Ahmed Nahid, Md. Reazul Islam, Mir Md. Abdullah Al-Mamun, Zabun Nahar, Sikder Nahidul Islam Rabbi, Maizbha Uddin Ahmed, Mohammad Safiqul Islam, Abul Hasnat
Till now no pharmacogenetic study of TP53 codon 72 (Arg72Pro) and CDH1 rs16260 (-160C<A) genes has been reported on Bangladeshi population relating those with colorectal cancer. So the aim of the study is to determine whether there is an elevated risk of colorectal cancer development with TP53 codon 72 and CDH1 rs16260 genetic polymorphism in Bangladeshi population for the first time. To investigate the association of these two SNPs, we conducted a case-control study with 288 colorectal cancer patients and 295 healthy volunteers by using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) method. We found an increased risk of association between Arg/Pro heterozygosity (adjusted OR=2.58, 95% CI=1.77–3.77, p<0.05) and Pro/Pro mutant homozygosity (adjusted OR=2.92, 95% CI=1.78–4.78, p<0.05) along with the combined genotype (Arg/Pro+Pro/Pro) (adjusted OR=2.70, 95% CI=1.90–3.82, p<0.05) and colorectal cancer predisposition. In case of CDH1 rs16260 polymorphism, C/A heterozygous and A/A mutant homozygous are significantly (p<0.05) found to be associated with colorectal cancer risk with adjusted OR of 1.94 and 2.63, respectively. The combined genotype of C/A and A/A was also found to be strongly associated with colorectal cancer risk compared to C/C genotype (adjusted OR=2.02, 95% CI=1.42–2.87, p<0.05). In conclusion, heterozygosity and mutant homozygosity as well as the combination of both TP53 Arg72Pro and CDH1 rs16260 polymorphisms are responsible to increase the risk of colorectal cancer development in Bangladeshi population.
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