Research Article

The Role of Genetic Variation Near Interferon-Kappa in Systemic Lupus Erythematosus

Table 5

Markers suggestive of association with skin-related clinical criteria. “Conditioned on …” = results from conditional logistic regression performed conditioning on the indicated SNP, MA: minor allele, “Case” and “Cont”: allele frequency of the minor allele in cases and controls respectively, OR: odds ratio, 95% CI = 95% confidence interval of the odds ratio, 𝑃 :  𝑃 value, AA: African-American ancestry, EA: European ancestry, Female −: female subjects lacking the indicated skin phenotype, Female +: female subjects with the indicated skin phenotype, Male −: males lacking the indicated skin phenotype, Male +: males with the indicated skin phenotype, Female ORs: odds ratio comparing female patients with and without the indicated skin phenotype, and Male OR: odds ratio comparing male patients with and without the indicated skin phenotype.
(a) AA female malar rash.

SNPMAOR (95% CI) 𝑃 Conditioned on rs4879541
OR 𝑃

rs4609281C1.35 (1.03–1.78).0301.28.091
rs11792285A0.60 (0.37–0.98).0430.92.81
rs4879541G0.58 (0.39–0.85).0061
rs7469146A0.57 (0.36–0.89).0150.84.66
rs10812611A0.57 (0.36–0.89).0140.80.56

(b) EA female discoid rash.

SNPMAOR (95% CI) 𝑃 Conditioned on rs2814707
OR 𝑃

rs4609281C1.47 (1.08–1.98).0131.04.91
rs2814707A1.55 (1.13–2.12).0063
rs12686452G0.65 (0.45–0.94).023.73.11

(c) Evidence for opposing associations with skin phenotypes in female and male subjects.

SNPAlleleFemale −Female +Male −Male +Female ORMale ORPhenotype

rs4879541 (AA)G0.1920.1240.0480.4470.586.36Malar
rs2814707 (EA)A0.2200.3120.2810.1561.550.45Discoid