Assessment of the Relationship between Ulcerative Colitis and Forkhead Box P3 Polymorphisms

Area of Science:

• Genetics
• Immunology
• Gastroenterology

Background:

• Ulcerative colitis (UC) is a chronic inflammatory bowel disease with no definitive cure, significantly impacting patient quality of life.
• The FOXP3 gene regulates regulatory T (Treg) cells, crucial for immune suppression and inflammation control.
• Specific FOXP3 gene polymorphisms, rs2232365 and rs3761548, have been implicated in inflammation-related diseases like UC.

Purpose of the Study:

• To investigate the association between FOXP3 gene polymorphisms (rs2232365 and rs3761548) and the risk of developing ulcerative colitis.
• To determine if these polymorphisms influence the severity or extent of UC.

Main Methods:

• A case-control study involving 146 UC patients and 292 healthy controls.
• Genotyping of FOXP3 polymorphisms (rs2232365 A/G and rs3761548 A/C) was performed using real-time polymerase chain reaction (RT-PCR).

Main Results:

• The rs2232365 G allele was significantly associated with a 1.44-fold increased risk of UC (P=0.013).
• Individuals carrying the rs2232365 G allele had a 2.56-fold higher risk for extensive UC (P=0.001).
• No statistically significant association was found for the rs3761548 polymorphism in any analysis.

Conclusions:

• The FOXP3 rs2232365 polymorphism plays a significant role in UC risk and extent in the Caucasian population.
• This study is the first to report the association of rs2232365 and rs3761548 with UC in Caucasians.
• Further research is recommended to explore the interplay of these polymorphisms with FOXP3 expression and Treg cell counts in UC patients.