The functional p53 codon 72 polymorphism is associated with systemic lupus erythematosus

Area of Science:

• Genetics
• Immunology
• Molecular Biology

Background:

• Systemic Lupus Erythematosus (SLE) is a complex autoimmune disease with a significant genetic component.
• The p53 protein plays a crucial role in cellular responses, and its functional polymorphism at codon 72 may influence disease susceptibility.

Purpose of the Study:

• To investigate the association between the functional p53 codon 72 polymorphism and susceptibility to SLE.
• To determine if this polymorphism correlates with specific clinical and serological manifestations of SLE.

Main Methods:

• Genotyping of the p53 codon 72 polymorphism using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP).
• Analysis of 90 SLE patients and 114 healthy controls.
• Correlation of genotypes with clinical and serological data.

Main Results:

• The Pro allele of the p53 codon 72 polymorphism was significantly associated with increased SLE susceptibility (OR=1.70, P=0.0079).
• A recessive model (Pro/Pro genotype) also showed a significant increase in SLE risk (OR=2.58, P=0.0093).
• No significant association was found between the polymorphism and the clinical or serological features of SLE.

Conclusions:

• The functional p53 codon 72 polymorphism, particularly the Pro allele, may contribute to SLE susceptibility.
• Individuals carrying the Pro allele may have a higher risk of developing SLE compared to those with the Arg allele.
• Further research is required to validate these findings and elucidate the precise role of this polymorphism in SLE pathogenesis.