STAT4 Gene and Severe Manifestations of Lupus
Author Information
Author(s): Taylor Kimberly E., Remmers Elaine F., Lee Annette T., Ortmann Ward A., Plenge Robert M., Tian Chao, Chung Sharon A., Nititham Joanne, Hom Geoffrey, Kao Amy H., Demirci F. Yesim, Kamboh M. Ilyas, Petri Michelle, Manzi Susan, Kastner Daniel L., Seldin Michael F., Gregersen Peter K., Behrens Timothy W., Criswell Lindsey A.
Primary Institution: University of California San Francisco
Hypothesis
Does the STAT4 gene polymorphism contribute to the severity of systemic lupus erythematosus (SLE) manifestations?
Conclusion
The STAT4 gene polymorphism is associated with more severe manifestations of systemic lupus erythematosus, particularly nephritis and autoantibody production.
Supporting Evidence
- The study confirmed that the STAT4 haplotype is significantly associated with SLE risk.
- SNP rs7574865 had a minor allele frequency of 31.1% in SLE cases compared to 22.5% in controls.
- Severe nephritis was associated with an odds ratio of 2.35 in a homogeneous subset of subjects.
- Anti-dsDNA autoantibodies were significantly associated with the STAT4 gene variant.
- Age at diagnosis under 30 years was linked to the STAT4 polymorphism.
- Oral ulcers were less frequently associated with the STAT4 risk allele, indicating milder disease.
- The study included a large sample size of 1398 SLE cases and 2560 controls.
- Principal components analysis was used to ensure the homogeneity of the study population.
Takeaway
Scientists found that a specific gene can make some people with lupus more likely to have serious symptoms, like kidney problems.
Methodology
The study analyzed 137 SNPs in the STAT4 region across four independent SLE case series and compared them to healthy controls.
Potential Biases
Potential bias due to differences in patient characteristics and methods of assessment across the four cohorts.
Limitations
The study's subjects were primarily of self-reported European ancestry and mostly female, which may limit the generalizability of the findings.
Participant Demographics
Primarily female subjects of self-reported European ancestry.
Statistical Information
P-Value
p<10−19
Confidence Interval
95% CI 1.23–1.70
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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