No association of PTPN22 gene polymorphism with rheumatoid arthritis in Turkey.
Although the association of rheumatoid arthritis (RA) with HLA-DRB1 (shared epitope) is well demonstrated in many ethnic populations, the role of other RA-associated risk loci is not clarified. In this study, the functional single nucleotide polymorphism (SNP) of PTPN22 gene was investigated in Turkey. 167 patients with RA and 177 healthy controls are genotyped by polymerase chain reaction (PCR)-RFLP for the SNP (rs2476601, A/G) of PTPN22 gene. Polymorphic region was amplified by PCR and digested with Xcm I enzyme. Heterozygous genotype (AG) was present in 5.1% (9/177) of the controls and in 6.6% (11/167) of RA group (p = 0.55, OR 1.3, 95% CI 0.53–3.26). There was also no association between any clinical feature, RF positivity and presence of this SNP. In conclusion, the distribution of PTPN22 polymorphism did not reveal any association with RA in Turkey.
Division of Rheumatology, Department of Internal Medicine, Marmara University Medical School, Tophanelioğlu Cad 13/15, Bağlarbaşı, Uskudar, 34662 Istanbul, Turkey.
N
N
Sahin
F
F
Gunduz
N
N
Inanc
Haner
H
Direskeneli
G
G
Saruhan-Direskeneli
D000328:Adult; D001172:Arthritis, Rheumatoid / Q000201:enzymology / Q000208:ethnology / Q000235:genetics*; D044466:Asian People / Q000235:genetics; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006579:Heterozygote; D006801:Humans; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D010641:Phenotype; D016133:Polymerase Chain Reaction; D020641:Polymorphism, Single Nucleotide; D054596:Protein Tyrosine Phosphatase, Non-Receptor Type 22 / Q000235:genetics*; D018570:Risk Assessment; D012307:Risk Factors; D014421:Turkey / Q000453:epidemiology
C516765:PTPN22 protein, human; D054596:Protein Tyrosine Phosphatase, Non-Receptor Type 22