There was no significant difference of IL-9 secretion by peripheral non-specific Th9 cells between CHB patients and hepatitis B-related HCC patients (P=0.347, SNK-q test, Figure 6A), or by liver-infiltrating non-specific Th9 cells between non-tumor site and tumor site (P=0.880, SNK-q test, Figure 6A). The gene discussed is IL9; the disease is hepatitis B virus infection.