Volume 50, Issue 11 pp. 3468-3475
Research Article

Increased susceptibility to rheumatoid arthritis in Koreans heterozygous for HLA–DRB1*0405 and *0901

Hye-Soon Lee

Hye-Soon Lee

Hanyang University College of Medicine, Hospital for Rheumatic Diseases, Seoul, South Korea

Drs. Hye-Soon Lee and Kyung Wha Lee contributed equally to this work.

Search for more papers by this author
Kyung Wha Lee

Kyung Wha Lee

Hallym Institution for Genome Application, Hallym University Sacred Heart Hospital, Anyang, South Korea

Drs. Hye-Soon Lee and Kyung Wha Lee contributed equally to this work.

Search for more papers by this author
Gwan Gyu Song

Gwan Gyu Song

College of Medicine, Korea University, Seoul, South Korea

Search for more papers by this author
Hyun-Ah Kim

Hyun-Ah Kim

Hallym University Kangdong Sacred Heart Hospital, Seoul, South Korea

Search for more papers by this author
Shin-Yoon Kim

Shin-Yoon Kim

Kyungpook National University College of Medicine, Daegu, South Korea

Search for more papers by this author
Sang-Cheol Bae

Corresponding Author

Sang-Cheol Bae

Hanyang University College of Medicine, Hospital for Rheumatic Diseases, Seoul, South Korea

Hospital for Rheumatic Diseases, Hanyang University Medical Center, Seoul 133-792, South KoreaSearch for more papers by this author
First published: 04 November 2004
Citations: 99

Abstract

Objective

To investigate the association of susceptibility and protective HLA–DRB1 alleles with rheumatoid arthritis (RA) and its clinical markers in an Asian population.

Methods

All RA patients (n = 574) and control subjects (n = 392) were Korean. HLA–DRB1 typing and further subtyping of all alleles was performed by polymerase chain reaction, sequence-specific oligonucleotide probe hybridization, and direct DNA sequencing analysis. We used a relative predispositional effects (RPEs) method and a false discovery rate correction method for multiple comparisons.

Results

The DRB1*0405 and *0901 alleles showed the most significant associations with RA (P = 7.83 × 10−24, odds ratio [OR] 4.40 [95% confidence interval (95% CI) 3.24–5.99], and P = 3.76 × 10−9, OR 2.47 [95% CI 1.82–3.36], respectively). The RPEs test showed that the DRB1*0401 and *0410 alleles conferred susceptibility and that the DRB1*0701, *0802, *1301, *1302, *1403, and *1405 alleles showed significant protective effects. Susceptibility and protective alleles both showed a pattern consistent with additive genetic effects, and each influenced RA independently of the other. The compound heterozygote DRB1*0405/*0901 was associated with the highest risk of RA (corrected P = 1.81 × 10−11, OR 58.2 [95% CI 7.95–425.70]). The mean age at disease onset was ∼4 years earlier or was 3 years earlier, respectively, in patients with at least 1 copy of the DRB1*0405 or the DRB1*0901 allele. Radiographic changes (stages II–IV) were more frequent in patients with at least 1 copy of DRB1*0405 (P = 0.032, 92.6% versus 84.3%, OR 2.33 [95% CI 1.24–4.39]).

Conclusion

The DRB1*0405/*0901 heterozygote has the strongest association with RA, suggesting that this heterozygote enhances the susceptibility to RA in Koreans.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.

click me