Validation of HLA-DRB1 Classification in Rheumatoid Arthritis
Author Information
Author(s): Michou Laëtitia, Croiseau Pascal, Petit-Teixeira Elisabeth, du Montcel Sophie Tezenas, Lemaire Isabelle, Pierlot Céline, Osorio José, Frigui Wafa, Lasbleiz Sandra, Quillet Patrick, Bardin Thomas, Prum Bernard, Clerget-Darpoux Françoise, Cornélis François
Primary Institution: University Evry-Paris VII Medical School
Hypothesis
The study tests the validity of a new classification of HLA-DRB1 alleles in relation to rheumatoid arthritis risk.
Conclusion
The new classification of HLA-DRB1 alleles was validated, showing a consistent risk hierarchy for rheumatoid arthritis genotypes.
Supporting Evidence
- The S2 and S3P alleles were significantly over-transmitted.
- The S1, S3D, and X alleles were under-transmitted.
- The risk hierarchy of the six derived genotypes was consistent across samples.
Takeaway
Researchers checked a new way to group genes related to rheumatoid arthritis and found it works well.
Methodology
An association study using conditional logistic regression was performed on 200 trio families to evaluate the risk hierarchy of HLA-DRB1 genotypes.
Potential Biases
Potential selection bias due to the long disease duration and the exclusion of certain alleles from analysis.
Limitations
The study may have survivor bias due to the long duration of RA in the samples and small sample sizes for some alleles.
Participant Demographics
Participants were 100 RA patients from French Caucasian families.
Statistical Information
P-Value
1.9 × 10-6
Confidence Interval
95% CI 9.9–49.7
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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