SCCA1 and SCCA2 genes, whose expression were greatly changed in a plurality of cells by stimulating respiratory tract epithelial cells with IL-4 or IL-13, were obtained as allergy related genes. Furthermore, elevation of blood level of expression products of these genes accompanying bronchial asthmatic attack was elucidated. This invention provides a method of testing for bronchial asthmatic attack that uses as indicators, expression levels of these genes in biological samples.