The human β2‐adrenoceptor (β2AR)2, 3 responds to stimulation by the endogenous agonist ligands adrenaline and noradrenaline by inducing Gs‐mediated cAMP signaling and is a valuable target for small molecule smooth muscle relaxants used to treat asthma and other pulmonary diseases.4, 5. Here, ADRB2 is linked to asthma.