To evaluate the effects of pitavastatin as a treatment for allergic asthma on IFN-γ and IL-4 mRNA and protein expression, we assessed IFN-γ and IL-4 mRNA expression levels in BALF using RT-PCR and IFN-γ and IL-4 protein expression levels in the lungs through western blot analysis. The gene discussed is IFNG; the disease is allergic asthma.