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PTPN22 Gene Polymorphisms in Pediatric Systemic Lupus Erythematosus
Tayyeb Bahrami1, Saeed Farajzadeh Valilou1,2, Maryam Sadr3
1Medical Genetics Network (MeGeNe), Universal Scientific Education and Research Network (USERN), Tehran, Iran (the Islamic Republic of).
Fetal and Pediatric Pathology
|June 25, 2019
Summary
Genetic variations in the PTPN22 gene, specifically the rs1310182 A allele and AA genotype, are linked to pediatric systemic lupus erythematosus (PSLE). These findings suggest PTPN22 polymorphisms may indicate susceptibility to PSLE.
Area of Science:
- Genetics
- Immunology
- Rheumatology
Background:
- Pediatric systemic lupus erythematosus (PSLE) is a complex autoimmune disease with unknown etiology.
- Polymorphisms in the PTPN22 gene have been implicated in systemic lupus erythematosus (SLE) in various populations.
- Investigating specific PTPN22 single nucleotide polymorphisms (SNPs) may reveal genetic factors contributing to PSLE susceptibility.
Purpose of the Study:
- To examine the association between five specific PTPN22 gene SNPs (rs2476601, rs1217414, rs33996649, rs1276457, and rs1310182) and PSLE.
- To determine if these PTPN22 polymorphisms serve as potential genetic markers for PSLE.
Main Methods:
- A case-control study involving 55 PSLE patients and 93 healthy controls.
- Genotyping of selected PTPN22 SNPs was performed using the real-time PCR allelic discrimination method.
Main Results:
- The PTPN22 rs1310182 A allele showed a significant association with PSLE (p=0.01, OR=1.92).
- The PTPN22 rs1310182 AA genotype was strongly associated with PSLE (p<0.001).
- The PTPN22 rs12760457 TT genotype also demonstrated a significant association with PSLE (p=0.046).
Conclusions:
- The PTPN22 rs1310182 A allele and AA genotype are associated with an increased risk of PSLE.
- These specific PTPN22 polymorphisms may represent a genetic marker for PSLE susceptibility.
- Further research is needed to understand the precise mechanistic role of PTPN22 in PSLE pathogenesis.
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