BCR and asthma: The initial stimulation of B cells via the B‐cell receptor (BCR) signaling pathway triggers the B‐cell‐driven humoral immune response, which is closely associated with IgE production.[3] Given the crucial role of IgE‐driven processes in both the onset and exacerbation of asthma, understanding the preliminary stages of BCR activation and their influence on IgE‐related asthma is essential.