Y Zhao1, Y Dong, X Zhu, C Qiu. 1. National Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, CAMS, Beijing.
Abstract
OBJECTIVE: To explore the role of HLA-DRB1 genes in the development of rheumatoid arthritis (RA) and the correlations between HLA-DR alleles and clinical manifestations of patients with RA. METHODS: 86 patients with rheumatoid arthritis and 106 race matched controls were studied in whom HLA-DR typing was performed by the method of DNA amplification with sequence-specific primers (PCR-SSP). The subtypes of HLA-DR4 were determined by the method of hybridization of PCR products with sequence-specific oligonucleotides (PCR-SSO). The absence or presence of HLA-DR4 and its subtypes was correlated with the clinical and serological characteristics of the patients. RESULTS: Compared with controls, an increased gene frequency of HLA-DR4 (48.8% vs 17.9%, P < 0.001) and a decreased frequency of HLA-DR7 (16.3% vs 27.4%, P = 0.06) were found. The DRB1* 0405 account for 61.9% of DR4+RA patients and 21.1% of DR4+ controls (P < 0.01). There was no difference between the DR4+ and DR4- patients with respect to age, sex, duration of disease, rheumatoid factor (RF), extra-articular manifestations including secondary Sjogren's syndrome. According to the wrist X-ray stage, the patients of DR4+ were more severe than that of DR4- (P < 0.05). CONCLUSION: HLA-DR4 and DR4 subtype of DRB1*0405 are related to the development of RA in Chinese. HLA-DR4 can be a useful prognostic marker in the patients with RA.
OBJECTIVE: To explore the role of HLA-DRB1 genes in the development of rheumatoid arthritis (RA) and the correlations between HLA-DR alleles and clinical manifestations of patients with RA. METHODS: 86 patients with rheumatoid arthritis and 106 race matched controls were studied in whom HLA-DR typing was performed by the method of DNA amplification with sequence-specific primers (PCR-SSP). The subtypes of HLA-DR4 were determined by the method of hybridization of PCR products with sequence-specific oligonucleotides (PCR-SSO). The absence or presence of HLA-DR4 and its subtypes was correlated with the clinical and serological characteristics of the patients. RESULTS: Compared with controls, an increased gene frequency of HLA-DR4 (48.8% vs 17.9%, P < 0.001) and a decreased frequency of HLA-DR7 (16.3% vs 27.4%, P = 0.06) were found. The DRB1* 0405 account for 61.9% of DR4+RApatients and 21.1% of DR4+ controls (P < 0.01). There was no difference between the DR4+ and DR4- patients with respect to age, sex, duration of disease, rheumatoid factor (RF), extra-articular manifestations including secondary Sjogren's syndrome. According to the wrist X-ray stage, the patients of DR4+ were more severe than that of DR4- (P < 0.05). CONCLUSION:HLA-DR4 and DR4 subtype of DRB1*0405 are related to the development of RA in Chinese. HLA-DR4 can be a useful prognostic marker in the patients with RA.
Authors: Matthew J Simmonds; Joanna M M Howson; Joanne M Heward; Heather J Cordell; Helen Foxall; Jackie Carr-Smith; Sarah M Gibson; Neil Walker; Yaron Tomer; Jayne A Franklyn; John A Todd; Stephen C L Gough Journal: Am J Hum Genet Date: 2004-11-22 Impact factor: 11.025
Authors: Laura B Hughes; Dahliann Morrison; James M Kelley; Miguel A Padilla; L Kelly Vaughan; Andrew O Westfall; Harshit Dwivedi; Ted R Mikuls; V Michael Holers; Lezlie A Parrish; Graciela S Alarcón; Doyt L Conn; Beth L Jonas; Leigh F Callahan; Edwin A Smith; Gary S Gilkeson; George Howard; Larry W Moreland; Nick Patterson; David Reich; S Louis Bridges Journal: Arthritis Rheum Date: 2008-02