The -283C/T polymorphism of the DNMT3B gene influences the progression of joint destruction in rheumatoid arthritis.
The objective of this study is to investigate the association between the -283C/T polymorphism at the promotor of DNMT3B gene and susceptibility to rheumatoid arthritis (RA) and to evaluate the effect of the polymorphism on clinical features such as progression of joint destruction in RA. A total of 309 patients with RA were compared with 297 control subjects. Genotyping of the -283C/T polymorphism was performed by real-time sequencing using Pyrosequencer. The genotype frequencies of the polymorphism at position -283 were not significantly different between patients with RA and controls. There were significantly positive correlations between the modified Sharp score and the disease duration for carriers of each genotype (y = 9.546x + 19.998, p < 0.001, for T allele carriers, y = 6.185x + 34.424, p < 0.001 for CC homozygotes). The slope of regression line of the T allele carriers was significantly steeper than that of the CC homozygotes (p = 0.014). In conclusion, our results suggest that the -283C/T polymorphism of the DNMT3B gene is a genetic marker related to the joint destruction of RA.
Division of Rheumatology, Department of Internal Medicine, Kyungpook National University Hospital, Samduk 2-Ga, Junggu, Daegu, 700-721, Republic of Korea.
Eon Jeong
EJ
Nam
Kyung Hoon
KH
Kim
Seung Woo
SW
Han
Chang Min
CM
Cho
Jongmin
J
Lee
Jae Yong
JY
Park
Young Mo
YM
Kang
D001172:Arthritis, Rheumatoid / Q000235:genetics / Q000473:pathology* / Q000503:physiopathology; D004248:DNA (Cytosine-5-)-Methyltransferases / Q000235:genetics* / Q000378:metabolism; D018450:Disease Progression; D005260:Female; D005819:Genetic Markers / Q000235:genetics; D020022:Genetic Predisposition to Disease; D006720:Homozygote; D006801:Humans; D007596:Joints / Q000473:pathology* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D012720:Severity of Illness Index; D000097584:DNA Methyltransferase 3B
D004248:DNA (Cytosine-5-)-Methyltransferases; D005819:Genetic Markers; D000097584:DNA Methyltransferase 3B