Tc17 cells have been implicated in a variety of diseases such as viral, bacterial, and fungal infections, gastrointestinal malignancies, and immune-mediated diseases of the skin, the gastrointestinal tract, and the central nervous system, and the IL-17 pathway has recently become a prominent target of novel biological therapies [6, 13, 14]. The gene discussed is IL17A; the disease is fungal infectious disease.