In the multivariate logistic regression analysis adjusted for concurrent infection, generalized purpura (OR 6.74 (95%CI 3.18–14.31), p < 0.001), pre-treatment NLR > 3.5 (OR 2.78 (95%CI 1.34–5.75), p = 0.006), and elevated serum IgA level (OR 0.40 (95%CI 0.20–0.79), p = 0.009) were extracted as factors associated with any GI involvement (Table 3). This evidence concerns the gene CD79A and infection.