Genome-Wide Association Study of Genetic Predictors of Anti–Tumor Necrosis Factor Treatment Efficacy in Rheumatoid Arthritis Identifies Associations with Polymorphisms at Seven Loci
2011

Genetic Predictors of Anti-TNF Treatment Efficacy in Rheumatoid Arthritis

Sample size: 1285 publication 10 minutes Evidence: moderate

Author Information

Author(s): Plant Darren, Bowes John, Potter Catherine, Hyrich Kimme L, Morgan Ann W, Wilson Anthony G, Isaacs John D, Barton Anne

Primary Institution: University of Manchester

Hypothesis

The study aims to identify genetic predictors of response to anti-TNF therapy in rheumatoid arthritis.

Conclusion

The study identified and validated the association of 7 genetic loci with response to anti-TNF treatment in rheumatoid arthritis.

Supporting Evidence

  • Seven genetic loci were identified that influence treatment response in RA patients.
  • The study included a total of 1285 patients, making it the largest investigation of genetic predictors of anti-TNF response in RA.
  • Multivariate analysis showed that incorporating genetic loci increased the variance explained in treatment response.

Takeaway

Scientists found 7 genes that can help predict how well rheumatoid arthritis patients will respond to a specific treatment.

Methodology

The study used genome-wide association studies and multivariate linear regression analysis to assess treatment response in anti-TNF-treated RA patients.

Potential Biases

Potential for spurious associations due to population stratification and small sample sizes in some cohorts.

Limitations

The study may have false-positive associations due to a lenient statistical threshold and the complexity of the DAS28 score.

Participant Demographics

Participants were predominantly Caucasian RA patients receiving anti-TNF therapy.

Statistical Information

P-Value

5.67e-05

Confidence Interval

95% CI not specified

Statistical Significance

p<0.001

Digital Object Identifier (DOI)

10.1002/art.30130

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