Guo et al. [94] demonstrated that FA could efficiently lower the phosphorylation level of JAK2/STAT6 in lung cancer A549 cells as well as the levels of expression of the immune factors IL-4, platelet-derived growth factor (PDGF), and granulocyte–macrophage colony-stimulating factor (GM-CSF). The gene discussed is IL4; the disease is lung carcinoma.