Impact of Toll-like receptor 2 (rs5743708) gene polymorphism in pediatric pneumonia: risk and severity

Area of Science:

• Immunogenetics
• Pediatric Infectious Diseases

Background:

• Pediatric pneumonia is a leading global cause of child mortality.
• Toll-like receptor 2 (TLR2) plays a crucial role in detecting bacterial pathogens and initiating immune responses.
• Genetic variations in TLR2 may influence individual susceptibility to infections.

Purpose of the Study:

• To investigate the association between the TLR2 (rs5743708) variant and the risk and severity of pediatric pneumonia.
• To determine if specific genotypes or alleles of TLR2 impact pneumonia susceptibility in children.

Main Methods:

• A case-control study involving 100 pediatric pneumonia patients and 100 age/gender-matched healthy controls.
• Genotyping of the TLR2 (rs5743708) variant using real-time polymerase chain reaction (PCR).
• Statistical analysis to assess the odds ratio (OR) and confidence intervals (CI) for genotype and allele associations.

Main Results:

• Children with the TLR2 (rs5743708) (G/A) genotype had a 2.52-fold increased risk of pneumonia (p=0.005).
• The TLR2 (rs5743708) (A) allele was associated with a 1.612-fold higher risk of pneumonia (p=0.023).
• No significant association was found between the TLR2 (rs5743708) variant and the severity of pediatric pneumonia.

Conclusions:

• The TLR2 (rs5743708) (G/A) genotype and (A) allele significantly increase the risk of developing pneumonia in children.
• Genetic predisposition related to TLR2 does not appear to influence the severity of pneumonia infection in pediatric cases.
• These findings highlight the role of TLR2 genetic variability in pediatric pneumonia susceptibility.