Fig. 5. HLA-DPB1 is a significant risk for B*27-neg AU.
A Manhattan plot depicting the -log10(P value) for all common variants (y-axis) across all chromosomes (x-axis). HLA-DPB1 top risk signal is shown by an upward red triangle on chromosome five. B A locus zoom plot showing all common and rare signals on HLA-DPB1. Genome-wide significant threshold of 5e–08 is represented by a dashed gray line, above which there is a stretch of high LD variants downstream to HLA-DPB1. Association models were run with age, age2, sex and age × sex, and 10 ancestry-informative principal components as covariates. P values are uncorrected and are from two-sided tests performed using approximate Firth logistic regression.