Moreover, it has also been demonstrated that Foxp3 expression represses the epidermal growth factor receptor (HER2/ErbB2) and SKP2 oncogenes in breast cancer cells.5, 6 Furthermore, we have previously studied the expression and functions of Foxp3 in microglia.7, 8 In this context, in the present study, we examine the function of the Foxp3 gene in asthma models. Here, FOXP3 is linked to asthma.