The loss of lung function due to fibrosis is common in asthma patients, and high‐dose tectorigenin could inhibit pulmonary fibrosis, which can be partly attributed to inducing the expression of vascular endothelial growth factor A (VEGFA), tumor necrosis factor (TNF)‐α, and IFN‐c.10, 27, 28. Here, VEGFA is linked to fibrosis.