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Figure 1 | Arthritis Research & Therapy

Figure 1

From: Trait-stratified genome-wide association study identifies novel and diverse genetic associations with serologic and cytokine phenotypes in systemic lupus erythematosus

Figure 1

Serum IFN-α levels in SLE patients stratified by SNP genotype at PTPRM (a) and LRRC20 (b). Y-axis shows the serum IFN-α activity score as outlined in the Methods section. Bars show the median, error bars show the interquartile range. Because IFN-α levels were far from normally distributed, we used a non-parametric version of the two sample t-test (non-parametric Mann-Whitney U) to test if IFN-α levels varied significantly between the two homozygous genotype groups.

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