Posttherapy IL-19 levels were detected in lymphoma patients with extranodal involvement, and the median level was 628 pg/mL (range: 439-817.3), which was significantly higher than that of subjects without extranodal invasion with a median of 46.5 pg/mL (range: 33-137.5) (P < 0.001) (Figure 2(b)). This evidence concerns the gene IL19 and lymphoma.