TP53 codon 72 Arg/Arg polymorphism is associated with a higher risk for inflammatory bowel disease development.

Area of Science:

• Genetics
• Gastroenterology
• Molecular Biology

Background:

• Inflammatory bowel disease (IBD) pathogenesis involves multiple genetic and epigenetic factors.
• The TP53 gene, a key tumor suppressor, has been implicated in IBD.
• A specific single nucleotide polymorphism (SNP) at codon 72 of the TP53 gene results in arginine (Arg) or proline (Pro) variants, potentially affecting its tumor-suppressor function.

Purpose of the Study:

• To investigate the association between TP53 codon 72 polymorphisms and the risk of developing IBD.
• To analyze the distribution of TP53 codon 72 genotypes in IBD patients and healthy controls.

Main Methods:

• Genotyping of the TP53 codon 72 polymorphism was performed using sequencing and restriction fragment length polymorphism analysis.
• Genomic DNA was extracted from peripheral blood samples of 461 IBD patients, 181 primary sclerosing cholangitis patients, and 62 healthy controls.
• Statistical analysis was conducted to compare genotype frequencies between groups.

Main Results:

• The Arg/Arg genotype was significantly more frequent in IBD patients (54%-64%) compared to healthy controls (32%).
• The Arg/Pro genotype was more prevalent in controls (53%) than in IBD patients (31%-40%).
• No significant difference in Pro/Pro genotype frequency was observed between IBD patients and controls.

Conclusions:

• The TP53 codon 72 Arg/Arg genotype is associated with an increased risk of IBD development.
• This polymorphism may serve as a potential genetic biomarker for IBD susceptibility.
• Further research is warranted to elucidate the functional mechanisms linking this genotype to IBD pathogenesis.